well ive been at the breadboard again...i know...i know....oh god not again!!!... ::)
anyway, i was tinkering with the vico vibe, and it just didn't cut it imo...cool as the circuit is, i had issues..as had others.
so i came up with this..
it has nice on and bypass signal comparison , without tone sucking, or infamous volume drop, and behaves clean or with dirt....and doesn't distort when you whack it with a humbucker (we don't all play single coils ;))
and goes really slow to fast as ....
anyway i added a crude depth, but could be much improved
in fact on this clip at the very end i disengage the depth and you can tell it is has much more depth (choppier)...so the depth control could be much better. any ideas welcome ;)
other than that its quite cool. 8)
https://dl.dropboxusercontent.com/u/7464107/tremmytremolo1.mp3
(https://dl.dropboxusercontent.com/u/7464107/tremmy1.jpg)
Hey Rob,
I didn't follow the other thread much but...
did you try a voltage divider "depth" pot between the speed pot and IC1B?
(https://dl.dropboxusercontent.com/u/53299166/DIYstompboxes/tremmy1%20Depth.jpg)
cheers larry, i'll give that a go... 8)
edit:
yeah its not adjusting depth at all, i left the pot ground off too or it stops flashing altogether and goes quiet.
man your quick at editing.. ;D
Just for kicks...
Try putting the depth pot (same config) in front of IC1B. (for isolation from the oscillator stage.)
Also...I left the designation and value on the pot when I quickly edited the drawing. The pot should be around 100K.
in front of IC1B..?..
do you mean the 1k output side?.
Quote from: deadastronaut on May 11, 2014, 05:23:58 PM
in front of IC1B..?..
do you mean the 1k output side?.
Yes...between pin 7 of IC1B and R6
if i dim the leds it takes the whole level down..
Well that' not good!
I would look for a different LFO to use.
You probably need separation between the oscillator and the depth and the depth and the LEDs.
Look at how the Mutron Phaser II LFO is implemented
ahh i think ive got it,
the depth has to be in parallel with the ldr, i just changed the depth pot to 100k and seems much better...goes from completely off ( same as bypassed) to full depth 8)
probably get away with a 47-50k..really
the lfo is fine, goes from really slow to fast...i swapped C4 for a 4.7uf, nicer 'useable' range now too..
as a test i lifted the depth pot compared to full depth and there was no differences...brilliant!..
edit: thers a nice difference in shape with using a blue led, compared to a red diffused led, the red diffused has a nice softer pulse, wheras the blue is choppier..
Quote from: deadastronaut on May 11, 2014, 05:56:54 PM
ahh i think ive got it,
the depth has to be in parallel with the ldr, i just changed the depth pot to 100k and seems much better...goes from completely off ( same as bypassed) to full depth 8)
probably get away with a 47-50k..really
the lfo is fine, goes from really slow to fast...i swapped C4 for a 4.7uf, nicer 'useable' range now too..
as a test i lifted the depth pot compared to full depth and there was no differences...brilliant!..
Good, good, good,
I don't really understand where you have it. is it where it was on you original drawing? just a higher value?
yep as the first schemo, but just a 100k pot for depth instead, and C4 at 4.7uf. done...swapping C4 will adjust the slowest speed , 22uf is funny, a really slooooow swell...just for fun.
but the 100k pot sorted it...proper choppy to subtle
behaves great with clean and dirt...excellent'e.. ;)
i haven't played with trems for ages, this is goodun. 8) 8) 8)
this sounds really really good!!
Quote from: deadastronaut on May 11, 2014, 06:09:25 PM
yep as the first schemo, but just a 100k pot for depth instead,
That is one funky depth control placement! but...if it works!
:D ha ha,
cheers man, yeah it does.. 8) 8) 8)
having fun with the long swells.. 8) xfuzz on synthy setting.into tremmy tremolo.. 8)
https://dl.dropboxusercontent.com/u/7464107/tremmy%20trem2.mp3
did not expect those sounds! Very versatile.
Do you have a layout or still breadboarding?
I think I might build a layout tonight if you don't have one
still on bread....
i only decided to rip off the vico vibe from breadboard and try this option this afternoon..
i cant be arsed with ordering reverse log pots, so i'll just wire them backwards....fully anti clock fast etc...for both.
bear that in mind..unless you have reverse log pots of course.. ;)
Try just using the Tremulus Lune's depth control (voltage divider between +9v, pin 7, and R6). It's already almost identical to the Lune's oscillator anyway, and then you can take advantage of the complete sweep of the vactrol instead of the max of maybe 50% attenuation you currently have. Of course, then it'll basically just be a two-knob Lune with the first stage inverting ...
You probably want a pF cap in the second op amp to head off ticking; you might also notice a difference with a buffer in front. And you may want a treble bypass across R8 (try something like 4.7nF and a 47K in series) to correct some of the treble loss you're no doubt getting with that input section.
Quote from: deadastronaut on May 11, 2014, 05:56:54 PM
thers a nice difference in shape with using a blue led, compared to a red diffused led, the red diffused has a nice softer pulse, wheras the blue is choppier..
Maybe make those switchable for different settings?
Sounds pretty clean and cool man!... that's all the depth? how i can get moooooore?
Quote from: midwayfair on May 11, 2014, 08:14:17 PM
Try just using the Tremulus Lune's depth control (voltage divider between +9v, pin 7, and R6). It's already almost identical to the Lune's oscillator anyway, and then you can take advantage of the complete sweep of the vactrol instead of the max of maybe 50% attenuation you currently have. Of course, then it'll basically just be a two-knob Lune with the first stage inverting ...
You probably want a pF cap in the second op amp to head off ticking; you might also notice a difference with a buffer in front. And you may want a treble bypass across R8 (try something like 4.7nF and a 47K in series) to correct some of the treble loss you're no doubt getting with that input section.
cheers john,
i just tried the 'lune' depth' but am not getting any depth control now...
am i right in thinking that the ldr would then go direct from IC1A pin 1.pin 6 IC2A?..
diagram?...i'm lost.. :)
Quote from: deadastronaut on May 12, 2014, 12:45:47 PM
Quote from: midwayfair on May 11, 2014, 08:14:17 PM
Try just using the Tremulus Lune's depth control (voltage divider between +9v, pin 7, and R6). It's already almost identical to the Lune's oscillator anyway, and then you can take advantage of the complete sweep of the vactrol instead of the max of maybe 50% attenuation you currently have. Of course, then it'll basically just be a two-knob Lune with the first stage inverting ...
You probably want a pF cap in the second op amp to head off ticking; you might also notice a difference with a buffer in front. And you may want a treble bypass across R8 (try something like 4.7nF and a 47K in series) to correct some of the treble loss you're no doubt getting with that input section.
cheers john,
i just tried the 'lune' depth' but am not getting any depth control now...
am i right in thinking that the ldr would then go direct from IC1A pin 1.pin 6 IC2A?..
diagram?...i'm lost.. :)
Well, you don't need to remove R16. It's setting the op amp gain to unity. You could remove it if your depth is too HIGH.
If your LED isn't blinking, something's hooked up wrong. It should divide between the output of the op amp and +9V.
If your LED is blinking but you aren't getting any volume attenuation ... well, there I'm just confused. Your LDR's resistances should divide with the op amp feedback resistor. :/
Perhaps take a look at the Shoot the Moon tremolo, which is a Tremus Lune-lite: http://juansolo.demon.co.uk/stompage/schematics/Grind%20Customs/STM_V1_Schematic.png
cheer guys, well i tried again with the shoot the moon setup,
both leds hardly flashing...,( r16 then ldr )...
the leds are hardly dimming, hence no trem really...
i copied it exactly...hmmmmm....i get the theory for it working that way , but it just isn't oscillating as widely in this case...e.g led on/off
edit i moved the leds in series and it seems better...
i now have depth but very ittle control, all bunched up one end of the 1k pot....
^the leds are hardly dimming
Are you using superbright LEDs? If so, try some regulars.
hi sam, yeah using brights, seems ok now , i just had to put them in series rather than parallel..
getting proper depth now, but 1k control seems moody...either on or off really
Yep - it works when you hook several LEDs up from the op-amp output to ground. The sweep is not great though as it is tricky to set the max and min depth. You also probably want the LEDs to be fully on at minimum depth, which is tricky unless you play with the op-amp DC bias.
The reason the Lune/Moon depth control is a bit more complicated is that the depth control and sweep works much better this way if it is set up properly (at least as far as I have found). With ultrabright LEDs you need to decrease the current by perhaps 10x, so try scaling the resistors up by ~10x.
Edit - but if your depth control is still parallel to the LDR, ignore most of what I said and try playing with the taper of the depth pot.
yeah i'll dig out a 1kA pot if i have one and try it in reverse...
it does seem more choppy though...
the blue led is choppier than the red as i said before...both have a nice haracter...like mike said switchable..
unless theres an easy mod to have siney and squarey.. ;D
edit: one thing i notice, when i have distortion on and guitar turned down i get a whooshing sound, not a tick or thump...hmmmm...
it goes when i turn guitar up..
Are the bl**dy whoosh - If it changes when you turn the rate knob, then you are likely hearing the LFO/LEDs.
If you want a square wave, tap the non-inverting input of the LFO op-amp and send this to the LFO buffer via a SPDT (to switch out the triangle you have there already).
the whoosh is really bad when depth is low/off...(distortion on/guitar vol off)
i'll try that tap lark after the whoosh issue.. ;D
edit: got rid of the whoosh with a 2.2k to ground from ldr led...cool. silent now. (cut trem depth a little...hmmm..
edit: got it, no more whoosh....
rght, i'm a happy bunny (but not blue :)) no more whooshy whoosh... 8)
but before i draw up a new improved schemo,
this tapety tap tap off shape lark...
i tried a jump lead from pin 3 to 6/7 is that what you meant?..
spdt switch wise, pin 5 to common, pin 3 to square end, and whatever you currently have connected to pin 5 to the triange end. that's if I'm reading anything correctly.
^i tried a jump lead from pin 3 to 6/7 is that what you meant?..
As the other da said (I think). Pin 3 goes to pin 5 and you switch out the connection between pin 5 and lug 3 of the speed pot.
yep got it now,
nice... square and triangle...very cool addition. cheers guys. 8)
i just realised my work lights affecting the ldr, like a total f...... dumbass...i put a tiny pinhole in the heatshrink ages ago to see/make sure the led was working ha ha. :icon_rolleyes:
proper good now..when dark. :D ;)
ok heres what i have now..
(https://dl.dropboxusercontent.com/u/7464107/tremmytremolo2.jpg)
and a normal clip...
https://dl.dropboxusercontent.com/u/7464107/tremmytremolo666.mp3
and having fun with the swell side of things....
https://dl.dropboxusercontent.com/u/7464107/tremmyverb.mp3
Cool.
You don't need R10 or R11. Actually, why not make the first op-amp non-inverting and save on a little noise?
cool, removed R10/11
i'm all for lowering noise....diagram? ;D
A couple of things.
What are you using for the LDR?
And...a bit of advice for Eagle:
Schematics are much easier to read (especially busy circuits) if you use symbols instead of wires to make power connections.
You'll find V+ symbols in one of the "supply" libraries.
You can also find VR symbols which you can place at the confluence of the resistors of the voltage divider.
You can then set a symbol anywhere on the schematic for VR with no lines.
I used to leave the ground symbol name in place for all of my GND symbol placements.
Sometimes the name will get in the way of something else and would be better off not shown....after all, we know that the symbol is ground.
Delete the GND name by right clicking on the GND symbol, left click on "smash", right click on the GND symbol name, and hit delete.
The name will disappear.....like magic! :icon_wink:
If you should want the name to be viable again, click on the symbol, and hit "unsmash".
LDR ; led on 24k led off 2k on . is what i get..
eagle: yeah i still need to learn untold stuff with it, especially the power side of things, to keep it tidy..
i either get no power and grounds to the board , or lots of pads everywhere...i need to sort out the 'references' rather than pads... ::)
Quote from: deadastronaut on May 13, 2014, 02:47:03 PM
LDR ; led on 24k led off 2k on . is what i get..
i either get no power and grounds to the board , or lots of pads everywhere...i need to sort out the 'references' rather than pads... ::)
Which model # LDR?
It sounds like you are using the GM supply power which lays a pad.
Look for the libraries supply, supply0, supply1, supply2. These libraries are not in the GM libraries. Scroll down in the library to the S section.
ldr : same as this..
http://www.evelta.com/ldr-5mm
ok i'll check that out, cheers man.
Quote from: deadastronaut on May 13, 2014, 10:25:07 AM
rght, i'm a happy bunny (but not blue :))
Did someone call?? ;D
Another great little project, Rob - thanks. My "list" is getting too long! I've only just boxed up your *first* reverb... :icon_rolleyes:
^i'm all for lowering noise....diagram?
The first of the op-amp buffers here: http://www.muzique.com/lab/buffers.htm
This will make the effect inverting - I think we have had this discussion before in another epic thread.
^ cheers sam, yes we have had this discussion before.. ;) (but i have the memory of a zx81)
which leads me to think...yeah i know , could be dangerous ;D
isn't there a bog standard go to 'in phase' no tone loss, no volume loss, in and out opamp buffer setup that could be used for everything like this ...?
it seems were using variations on the same thing whether it be reverb, delay, ...so surely there is a 'standard' in/out config...hmmmmmm...
....................
ok, the first opamp buffer setup....i'll try it, cheers sam.
ok , heres the latest... it works fine, just a slight tonal difference between bypass and on....slightly brighter when on, but i am being a bit anal as usual... :)
i'm guessing a cap on IC1B in parallel with R14 is in order...ive tried from 22pf to 1nf but can't quite nail it (testing with trem depth fully off)
(https://dl.dropboxusercontent.com/u/7464107/TREMMYTREM777.jpg)
Your input impedance is now 1M - was 470k - so perhaps you can hear that? Perhaps see what happens if you make R7 470k.
You can probably do away with C7.
cheers sam, yep that seems better...
its weird with tremolo's, they tend to have a 'perceived' vol drop with distortion...which isn't at all really,
but on clean the trem is slightly brighter than bypass...
i was thinking i might use a 25k trimmer for R16, ...
or maybe more sense would be using a pot...for the 'perceived vol change over speed changes...especially when fast choppy....
however in the UK we mainly have just 22k's, unless i use a 47k and stick a limiting resistor in front hmmmmm...
edit:
is there a better way using transistors rather than led/ldr as the leds seem pretty noisey?
^i was thinking i might use a 25k trimmer for R16, ... or maybe more sense would be using a pot...
That might be a nice feature - at the moment, you can never quite get to unity gain.
^however in the UK we mainly have just 22k's, unless i use a 47k and stick a limiting resistor in front hmmmmm...
I don't follow
^edit: is there a better way using transistors rather than led/ldr as the leds seem pretty noisey?
That's a whole other kettle of fish.
Have you tried playing with different types of LEDs or a proper vactrol?
Haven't got a proper vactrol...ill mess with leds though, yeah seems it needs a pot for R16...
ok, messed around with various leds..
turns out super blue is the quietest...(the red/yellow diffused screamed when guitar was turned down with distortion)
so i have a super blue, and super green with ldr...at the moment.
i found a 5.6k in series with a 10k pot where R16 is has enough kick.... 8)
ok, i think i'm there with this, i ended up using a red diffused for the indicator, and super green for ldr. seems to be behaving quite nicely now,
any other suggestions before i knock this up..?
(https://dl.dropboxusercontent.com/u/7464107/sundivertremolo.jpg)
why can't i post youtube links in between the brackets anymore?...hmmmm.
well ive been tinkering again,
i'm still getting an annoying screech from the leds when using a distortion,...especially with the guitar vol down....hmmmm...
ive tried caps on the second opamp to no avail...
everything is lovely when clean, but distortion not so....is this the same issue for ALL diy tremolo's???????....
and how can it be overcome?.
Quote from: deadastronaut on May 20, 2014, 10:04:24 AM
https://www.youtube.com/watch?v=a9b3UI60lFc&list=UUGP0eO8ADt0H9FY5UcHTf8A
why can't i post youtube links in between the brackets anymore?...hmmmm.
You have to take out the 's' from https
ahhh cheers micro, i never used too...but i will now. ;)
done. thanks
if i use red diffused leds i dont get the cut of choppynes on square wave...
so i'll try 2 super blues in series instead...
Clip sounds good.
^i'm still getting an annoying screech from the leds when using a distortion,...especially with the guitar vol down....hmmmm...
What kind of distortion (discrete or op-amp)? Your LFO may be throwing quite a lot of noise onto the signal ground, which you are hearing elsewhere.
cheers man, yeah sounds great,
i'm using the X ROCK distortion from the xfuzz thread, 2 tranny type..
xrock on bread - tremolo on bread..
i just made led/ldr with blue, and a blue in series, back to being choppy again.. 8)
upon messing with this more...
i find i can get depth with a 1k trimmer...no problemo
but when i try an actual 1k lin pot, to test 'real life' range of depth it will not kick in the trem.(no adjustment at all) ....if i put a 4.7k it kicks in...hmmm..(with even less range obviously...
i know the pots i'm trying are fine...
any way to get a good range with a 4.7k pot instead?..
when is a 1k pot not a 1k pot, or, I know I'm fine, but how are you?
did you measure all the pins to all the other pins, while rotating the shaft? one of your two 1k pots ain't the full quid.
;D
i got it going now i had to raise the 470r going to 9v to 2.2k, or no joy..
even so the pot still has no depth effect for half its travel....hmmmm
my latest addition to this is a variation on the inductorless wah too...just for kicks, (might end up being a ms20) :icon_idea:
but heres the idea,..
2 lfo's...one for trem, and another for the filter changing 'over time' with it (optional)
so you get:
trem trem trem trem trem....(choppy)
whoooooshhhsssoooooohhw....... (triangle)
be nice on the choppy square stuff, and the triangle too....hmmmmm... 8)
which got me thinking....yeah i know.. ::)
as i have an lfo with triangle and square options already...bear with me ok, how about using the one lfo for doing both?????...with some dodgy switching. :icon_idea:
or do i need more pharmacy drugs and sleep.. :)
heres what i have so far...very floydy.. 8)
https://dl.dropboxusercontent.com/u/7464107/tremmyfilterfloyder.mp3
Very nice Rob! That has a nice sound to it with the vocal setting.
cheers john,
yeah its got that old floydy organ-ish sound...very cool.
instead of just having a trem why not have little extra eh.. 8)
That sounds like the dog's bollocks.
So when is the deadastronaut album coming out? I would like to pre-order my copy now.
Or do I have to keep cobbling together samples and making bootleg albums? :icon_mrgreen:
I'm serious, take my money!
Quote from: deadastronaut on May 27, 2014, 07:08:24 PM
or do i need more pharmacy drugs and sleep.. :)
If this is what illness and drugs and alcohol does, then please remain a sick junkie (in a nice way, of course!) and keep coming up with these weird and fantastic ideas!
One of these days I'm gonna drive over to saaf-eass Lahnd'n and hunt ya down, and stick a bottle of Grouse down yer neck just to make sure you don't start doing boring stuff like a "booster"... ::) ;D :icon_twisted: :icon_twisted: :icon_twisted: ;D
cheers sam, yeah i love it too... i'll knock up a quickie schemo of how i have it at the mo before it gets lost in the random chaos of tweakery..
@mike: it'll never happen all the time i'm tinkering, ......but you never know.
i have a lot of tracks/songs like most people do i guess, but i never put them 'out there' as i'm never quite happy with the recording/mixing mostly ....one day maybe... ;)
@marc: lol, different effects for different ailments, maybe i'll try and get malaria next, with a dash of herpes for good measure ,hmmmm you never know what might come of it.... 80 hour delay, (that'll be fun testing).... ;D
and yes you and the whiskey will be most welcome 8) 8) 8)
heres the filter i used..
on the clip i just went straight into the filter and out... hooked up to one side of the ldr of the lfo for the tremmy tremolo (red moon tremolo)
(https://dl.dropboxusercontent.com/u/7464107/FILTER%20FOR%20TREM.jpg)
now i just need to work out a minimalist way of using the existing tremolo which is fine , and this filter switchable in/out...e.g normal trem/filter trem..
and also how to use the triangle wave side of things with the filter , whilst also using the square side of things to get the choppy but ramping up/down filter too..
greedy?...oh yes ;) ;D
any suggestions always welcome..(apart from sod off) ;D
complete schemo of what i'm up too... :)
(https://dl.dropboxusercontent.com/u/7464107/filtertremolo.jpg)
Hey Rob,
I've been working on a stereo panner/tremolo for the last month or so and I came across an issue with switching from a triangle wave to square wave.
The amplitude of the square wave is greater...which equates to the level when in "square wave mode" being a bit louder.
I took some voltage measurements and "tamed" the square wave with a voltage divider.
You can measure the voltage of the triangle and the square and calculate the voltage divider resistors to even things up.
On your drawing one side of the smaller value resistor would connect to the confluence of IC2 pin 3, R3, and the other side to SW1 pin 1. The larger value resistor would connect to SW1/smaller resistor and the other side to ground.
Check it out to see if there is a noticeable volume difference between the two waves.
cheers larry, interesting, hmmmm..yeah the square does seem a tad louder now you mention it.
i'm guessing from what i want to do i'll end up having to have 2 seperate lfo's anyway...
so i could use them both for square/triangle too...but i would like them to be in sync with each other...(if i use a quad opamp i'm guessing they would be?) or would 2 sets of what i have be syncro'd anyway)
any good really slow to fast 'dual' lfo's about?...(avoiding the 555's) :)
I don't think that two LFOs using one quad IC would be in sync. The slight variance in components would dictate different rates of oscillation.
Hmmm thats what i thought...maybe enough for what i want though, as the filter part wouldn't really need a square wave...
anyway time for a very crude block diagram to better explain my intentions....make sense?. :)
(https://dl.dropboxusercontent.com/u/7464107/CRUDEASSBLOCK.jpg)
here's a clip of what i mean...( i added the choppy trem in soundforge just to get the idea..)
https://dl.dropboxusercontent.com/u/7464107/TREMFILTERCHOPPY.mp3
So you want the two effects in parallel?
trem, and trem with filter option...
but squeezing a square and triangle for trem..
and a triangle only for the filter.. :)
The reason I ask is that you could use the first op-amp in the audio path as your filter. In this case, you would have the tremolo in series (after) the filter...
yeah that sounds cool,
i thought about the opamp being the filter actually too , makes sense, ..but use the values for the twin T i was using ...
ian gord bless him ;) suggested an option of tapping off the square wav pin1, and triangle pin7 from the existing lfo which makes sense too..(minimalist parts wise)
i tested that out by using an led from pin 1/7 ...
it works , i get square from pin 1 (led on/off) whilst my trem ldr led is triangle..(pulsing) nicely..
and when trem led is switched to square both are square...cool..
however all speed is obviously being controlled with the one pot, ......so no fast chop with an underlying slow filter..
interesting though. 8)
edit:
wow, just wow...spent the last hour or so just rippin over this with the filter on a sloooow sweep with the xrock...seriously nice.. 8) 8) 8)
for a laugh and temporaryness i joined the inputs opamp/filter and just came out of the filter...seriously nice, like having the filter/wah in front...but not. its after the drive, but still has that bite to it.....very cool. 8)
sam do you have a block diagram of how you would go about it?...
looks like i'm going to need 2 lfo's anyway...so i'll go from scratch.
You could arrange the audio section something like this.
We have to use an inverting op-amp if you want the classic wah treble cut along with the resonance peak. It won't sound exactly the same as the NPN version, but have a play with the value of R1, which sets the gain of the twin-T filter.
I couldn't figure how to switch the filter out in a very elegant way, but this should work. If you change R1, then make R6 the same value too.
(https://dl.dropboxusercontent.com/u/11996927/auto-wah_tremolo.jpg)
Yeah I think 2 LFOs is the way to go for this sort of thing. You can always add the option of running both bits off the same LFO as well if you want. Another thing to try might be mixing the 2 LFOs for proper trippy madness.
Fast chop trem and slow filter/phaser/flanger or whatever is a great combo.
I agree with Ian.
To keep the circuit manageable, you could try buffer each LFO with a transistor rather than another op-amp.
ahhh nice one sam, your a star..
i'll crack on with this as soon as...
i'll rig up 2 lfo's for the ldr's and see how i get on....excellent'e.. 8) (i'll sort a pair of matching ldrs too)
should sound pretty cool...in theory. :)
edit: cheers ian...trippy madness is always good.. 8)
''Fast chop trem and slow filter/phaser/flanger or whatever is a great combo.''' yep that's the idea.. 8)
^ (i'll sort a pair of matching ldrs too)
I wouldn't bother - they are doing different things, so they don't need matching.
Not sure if you have thought about a depth control for the filter. If not, bear in mind that it will have to work the opposite to the tremolo depth - minimum depth should give minimum current through the LED.
righto... 8)
is it tremolo season again? I'm off -over there- doing envelope modulated osc trem, with an ldr even. this thread, however, since the introduction of the triangle and square parts, has me baffled. do you want to have a choppy mixed with a triangle tremolo, or is it some kind of other monster?
other monster...
choppy/smooth trem, with sloowwww 'yearing' filter...option. ;)
An auto-wah-olo?
please don't tell me I'm going to have to try this on bb. cause I won't do it.
I won't.
you bloody will....get on with it you lazy ducks buttock. :icon_twisted:
: one more lfo to go...had to rearrange my whole breadboard.. ::)
hmmmm..
i had a whiney issue so went back to the drawing board....and kept it basic to start.
i breaded the opamp with filter on its own,(R7 straight to pin 6 (no ldr) but i just get a whiney tone that changes with light on the filter ldr...
now i know the rest of it is ok, as a test i tried it without the filter and stuck a 470k across pins 1 and 2 instead to make sure i get a good clean unity signal...which it does nicely..
as soon as i put the twin t section back on....whooooooooeeeeeeeeeoooooooohwww..weird. ??? more like a tone generator..
So the op-amp twin-T filter isn't working right? I haven't breadboarded it, but it looks like it should work ok.
What are the light and dark resistances of your LDR?
Hi Sam , 22k to 2000. ....ish.
yeah looks like it should be ok, worked with a 470k across pin 1 &2...hmmm.
edit: ok.stuck a 470k across pins 1/2 with the filter...now it works. 8)...which is strange as there is 2x220ks across it anyway...weird..
(still get that led noise with distortion with guitar rolled off....hmmmm....but hey its working ok now...
^stuck a 470k across pins 1/2 with the filter...now it works
Have you made a bridge-T filter? (http://www.geofex.com/article_folders/eqs/paramet.htm, bottom of the page)
yeah, as you drew it, but added the 470k too works fine now...
just cleared of another breadboard ::) to put the other lfo on....
now we can just lift one side of the filter like before to turn it off...cool.
i'll tweak the filter values a little ....
the depth would be mad on lfo too..sounds quite sick, but getting into synth territory there...but i had to try it.. ;D
got a few chores to sort..then i'm, back on it. 8)
Have we ever tinkered with hypertriangular LFOs for tremolo here? I'm just wondering if it represents a useful addition to the assorted waveforms, even if only for a narrow range of modulation rates. I've never heard a hypertriangular LFO in action w/tremolo so I don't know if it sounds nice, sounds the same as triangle, or sounds unappealing.
For example, consider the analog portion of this circuit (i.e., everything up to the modulation depth control): http://hammer.ampage.org/files/hypertriangleclock.gif (I'd insert it in the post but it's disconcertingly big)
I messed up an oscillator with some sorta hyper thingy. one knob twists from triangle/sine-ish to sine-ish to sine-ish/triangle. one of the first circuits I posted here. looks like this:
http://www.diystompboxes.com/smfforum/index.php?topic=98974.msg886084#msg886084
Thanks. I look forward to being able to see it later this evening (work filters...bah!).
ok, got my 2 lfo's going...after faffing around with mrs astronaut, she came home with a massive old 1930's wills's cigarettes enamel sign (which she collects) she bought it from some dumbass in a shop for £15.00, and its worth £350.00, :icon_eek:
i spent today t-cutting it, and its come up lovely...very cool...anyway nevermind that.....
like a dumbass i recorded this clip and then realized i had the lfo's swapped...e.g, the square /triangle was on the filter not the trem... ::)
anyway..i'll sort that, but its sounding promising.... 8) will be much better when i swap lfo's.. ::)
https://dl.dropboxusercontent.com/u/7464107/filtremolo.mp3
My face has been melted. Dude, you have to stop with these amazing effects. I can't keep up! :icon_eek:
Quote from: deadastronaut on May 31, 2014, 06:45:28 PM
ok, got my 2 lfo's going...
Blimey! Get thee to a synth forum! :icon_eek: Then let us know where you land and we'll all follow. :icon_biggrin:
^ funny, i have been looking at a load of synth stuff lately.....inevitable i guess. :)
anyway, swapped the lfo's over...clip.
https://dl.dropboxusercontent.com/u/7464107/filtertremmy9.mp3
i quite like the filter, but i may as well just stick a phaser/ms20/flanger after it and be done with it really...good fun though.. 8)
Nice work Rob, it sounds fantastic.
Quote from: deadastronaut on June 01, 2014, 05:24:01 PM
^ funny, i have been looking at a load of synth stuff lately.....inevitable i guess. :)
Ha ha - yeah, me too! ;D Knowing my unstoppable GAS, I feel a visit over to Rick's emporium to pick up some modules is inevitable... :icon_rolleyes:
Quote from: bluebunny on June 02, 2014, 03:35:10 AM
Quote from: deadastronaut on June 01, 2014, 05:24:01 PM
^ funny, i have been looking at a load of synth stuff lately.....inevitable i guess. :)
Ha ha - yeah, me too! ;D Knowing my unstoppable GAS, I feel a visit over to Rick's emporium to pick up some modules is inevitable... :icon_rolleyes:
Don't forget the two year shipping time... :icon_mrgreen:
cheers john: 8)
@mike...now now..you know these things take time... ;D
i stuck a keyboard through this too last night...pretty cool, especially on pads, drones etc... 8)
Quote from: deadastronaut on June 02, 2014, 05:57:33 AM
i stuck a keyboard through this too last night...pretty cool, especially on pads, drones etc... 8)
Damn your eyes, Rob! Now I'll
have to build one of these into a Eurorack module! :icon_eek: ;)
Sounds great, beautiful playing too. So is it tremolo->filter? Any chance of posting the schem from that lsst clip?
hi leo, its basically this:
http://www.diystompboxes.com/smfforum/index.php?topic=107197.msg975196#msg975196
with 2 of these lfo's.(bottom schemo) ..but only one lfo has the square/triangle switching...which is for the trem side of things....other lfo for filter..
http://www.diystompboxes.com/smfforum/index.php?topic=107197.msg975091#msg975091
had to move the filter on off switch to the pin 1 side of the opamp, otherwise i get bleed through when off...(note to self really )
i'm tweaking the filter to be at a better 'unity' tonal wise when using distortion...its all fine when clean, but adding distortion is a little lower really...tweak tweak..
i also had it working just as well with removing the top 'T' entirely... so it was just the 470k and 2x 2.2nf's>ldr..
ok, had a few tweaks here n there....
mainly i found using super green led for the ldrs gave the best sweeps...and used yellow diffused for the indicators to avoid blindness..(which work together nicely)
i also removed the upper/lower half of the twin t filter, which gives me a fuller filter sound which goes much better with a distortion,
i added a pot there instead which gives me a depth/Q control too..very cool. and adjusted the lfo to suit..
like i said i shifted the filter swtch to the right (pin1) of the opamp, otherwise i had bleed through when off....behaves nicely now...
i still hate the trem depth control though, ive tried sticking a 1k across the 1k pot, and reversing the pot but its still bunched up....needs attention imo..
this is where i am so far,
(https://dl.dropboxusercontent.com/u/7464107/TREMSHIFTER1.jpg)
Another cool project. Nice one, Rob. 8)
Quote from: deadastronaut on June 05, 2014, 08:34:25 AM
. . .used yellow diffused for the indicators to avoid blindness
Unlike this one of mine! ;D
(http://www.bouron.org.uk/marc/o636.JPG) (http://www.bouron.org.uk/marc/o636.JPG)
^ funny i just got an appointment letter from specsavers...must be an omen. :icon_evil:
hey rob.
something to try led driving wise. remove R25 (Anode now to pin 7), shift the pin 6 wire to top of R24, maybe increase R24. this may blow everything up, I dunno, worth a try if you're still on the bb. the driving method is working for my envelope this end.
and the green led on the depth pot: is that ON - going OFF-er with the lfo, or is it OFF- turned on-er by lfo?
cheers DA, ive had a few tweaks , ok got the freq's sorted on the filter with distortion....this is twiddling with the filter/ldr Q pot.
still need to sort the depth out without altering the freq though....little steps... ::)
i'm having a hawkwind flashback morning...(with the choppy trem added you can get a great spirit of the age thing going..really authentic sound) 8)
https://dl.dropboxusercontent.com/u/7464107/tremshifterQ.mp3
Quote from: deadastronaut on June 06, 2014, 04:01:50 AM
i'm having a hawkwind flashback morning...
"
The Hawkwind". That's what I'll be calling mine, when I build it... ;)
that's the spirit.....erm.....of the age.. ;D
coats on... ::)
but before i step outside, i was thinking...yeah i know right ::)
but as i'm switching this filter in/out, i may as wel be a greedy little bugger and switch between 2 filters too...bright/warmer - thin/fat..
on/off/on switch :icon_idea: 8) may as well while i'm at it..only a couple more bits 8)
Next, you'll be wanting a third LFO to morph between two filters.
Oh no! What have I said?! :o
Sounds cool Rob.
^still need to sort the depth out without altering the freq though.
At the moment, as you turn down the depth, you shift the filter towards the treble.
Try putting a C100k depth pot in series with the 2n2 caps in the filter. As you add resistance, you reduce the peak and add a shelf, which flattens it out.
Edit - and I would imagine the filter might sound fuller with 4n7 caps insteady of 2n2.
cheers sam, yep i tried that last night with a 100k (trim) i haven't got a C POT though..
it works, but i get a whooooshhhhh over the top still too...(which may be unavoidable with a dirt pedal on it i guess )
edit: yeah i tried different caps, fatter/thinner, that's what i was saying about switching them too... 8)
Very nice projet, DA!
You convinced me to breadboard this kind of filter for synth like sounds, in conjunction with my tremulus lune, trivibe and echo box. :)
Before wanting a third LFO ( :icon_mrgreen:), you could wire a switch to make the second LFO modulate the speed of the first LFO when you don't use the filter. It's a nice feature I added to my tremulus lune, in order to make rythmic choppy sounds, like in this video à 5min:
WHOAAAAAH....
arghhhhhhhhhhhhhhhhhhhhhhhhhhh my head.... ;D
nice feature.. 8)
:icon_mrgreen:
You can find some informations on the Tremulus Lune site (commonsound as far I can remember).
a vid of some tests while on breadboard/s...... 8)...getting there slowly...
Rob is... Jean-Michel Guitarre. ;D
(http://jeanmicheljarre.com/wp-content/uploads/2013/11/santiago.jpg)
(^^^ And that'll be one of his LED trinkets...)
Ha ha bonjour bleu bleu bleu.... ;D
Quote from: deadastronaut on June 07, 2014, 05:57:09 PM
Ha ha bonjour bleu bleu bleu.... ;D
LOL. That's funnier than you might imagine. Just between you and me (I can't imagine there's anyone reading this...) the "bluebunny" moniker is from my late French grandmother's pet name for me when I was a kid - "lapin bleu". ;D
A toute à l'heure, astronaute mort... ;)
le lapin bleu ha ha ;D
drôle les choses que vous êtes appelés comme un gosse,
J'ai toujours été nervuré pour mon nom de famille henry, henry VIII toute l'heure sanglante .. ::)
anyway......
back to old blighty... 8)
anyway...
i still can't get this filter depth sorted, i tried sams suggestion of a pot in series with the filter caps, which works..kind of.
but when depth is fully off i get hi freq hiss...hmmm... ???
also ive been trying to tame ticking from the filter too when at high speeds, and whooosh at low speeds....(when clean)
the tremolo side of things are great...(still not happy with the depth control though) but other than that really cool.
its just the filter side of things really.... :)
The depth control on the filter is a bit of a kludge. You could try doing it on the LED side of the vactrol.
^but when depth is fully off i get hi freq hiss
Have you tried a small cap across the 470k resistor?
cheers sam i'll try that cap...
i tried that led too, tried all sorts,
i tried the 'kludge' method again ;D , with a 47pf, had to put a 1uf electro before the pot to stop 'DC scrathchyness...
pretty smooth control now... 8)
edit: which is cool as now i won't need a switch for the filter either...excellent. 8) 8) 8)
excellent
^had to put a 1uf electro before the pot to stop 'DC scrathchyness...
That got me thinking - why not put the depth control between the two 2n2 caps, which led to a slightly less kludged depth control in the updated schem here:
http://www.diystompboxes.com/smfforum/index.php?topic=107197.msg975196#msg975196
No idea how well it will work, but the sim gives a much flatter response with the depth at min, which may work better if you don't want to switch it out.
yep that works too....but cuts a lot of the full sweep off..
so back to kludgey no.1 it is...seems to work nicely anyway...
now for this bloody trem depth, ive tried sticking a 1k across the 1k pot but its still all bunched up, 3/4 of the pot does bugger all
i haven't a 1k log pot to try in reverse.....only lins..hmmmm...
another way of trem depth control?...
ok, it might work better with a larger pot, but I will have a play on the breadboard at some stage.
RE: depth control, it might be worth auditioning a few LDRs to see if one works better than the others.
whoohoo...got it, R17 to a 3.3k instead of 2.2k...perfecto..
nice range from 0 to full on chop...sorted..much better.,
goes nice with the filter sweep/mix too....pukka!!!.. 8)
any other filter to whack on this while i'm at it..?....recommendations?..
state variable?
rob, it's not a filter, but you did ask.
(http://i.imgur.com/HVzhSVm.png)
I haven't tried this, and was going to ask for a volunteer. I see your hand up. R1//R2 (from your first posted circuit) set the symmetry of the osc, going from saw up - triangle - saw down, I'm sure you know this. so, wobble that ref voltage with another lfo// led // ldr, and what will it sound like?
the values might need tinker, use a 4k bright~500k dimm ldr, the 2 circuits will work slightly different. if they work at all, that is.
have fun.
cheers DA , but i'll stick with what i have at the mo i think...mt breadboards are a bit cramped already.. :)
one idea that came to mind whilst floating around the earth was this...
if i can get the filter side of things to be a constant volume, rather than dipping and swelling, it would be more like a phaser...
possible?...
Quote from: deadastronaut on June 09, 2014, 12:40:01 PM
whoohoo...got it
Good sign. :icon_cool:
Quote from: deadastronaut on June 14, 2014, 05:07:09 PM
possible?...
Bad sign. :-\ There may be another seven pages before we're done with this! ;)
Lol...
most likely... ;D
aha...
had a mad revelation just now...
i was talking about getting the sweep but without the dip in volume (especially with distortion)..
i found a good kludge , the filter lfo's voltage divider (2x220k's) seems to be the key,
raising the 220k to ground from 220k to 1M (via a pot) stops the lfo led from dipping and dragging the vol with it,..
so a 220k as normal but with a pot in series works.....seems kinda obvious now ive tried it....acts as per normal, and sounds quite phasey now too...pretty sweet. 8)
ok heres what i have now...the filter depth is pretty cool now, pretty unorthadox, but it works nicely to go from deep sweep, to subtle.
(https://dl.dropboxusercontent.com/u/7464107/tremshifter2.jpg)
there is something missing from IC1A in the N/C position. no feedback?
well spotted...
must've been when i was swapping the switch position...cheers man. 8)
i was tinkering with filter caps...with a pot, but did'nt get desired results..
to sweep from fat to thin
10n lug3........
signal lug2...../\ \/
\/ ..........
1nf lug1......../\
then realised my pot is messing it up..
easier way?..
ok, with the help of sam, cheers man. ;)
i now have cap selection in the filter...
2.2n / 4.7n / 10n...the clips are in that order....apart from the noodly bit on the very end which is in reverse order ::)..
https://dl.dropboxusercontent.com/u/7464107/2.2n-4.7n-10n%20filter%20tsts.mp3
might have a little noodle around with the values still...but getting there.. ;)
Doesn't sound too bad. Perhaps try a 3n3 in place of the 4n7?
will do, yeah it needs a tinker to get a nice 3 way range i'm happy with.... 8)
2.2n/3.3n/10n...seems ok.. tried a 6.8n , but 10n seems fine now... 8)
our dear old friend mr switch poppo is back in town ::)...i thought i'd sorted that but obviously not.. ::)
typical , sort one thing then....... ::)
(https://dl.dropboxusercontent.com/u/7464107/oldpoppo.jpg)
edit a 1M across the switch seems to have tamed it....better way?
edit: i'm knocking up a layout in eagle..i fancy i'll get a few boards fabbed instead of my usual off board nightmares.. ::)
i'll still have off board pots though..can't be arsed to order them, or fanny about, and reduce size/cost etc...but the onboard switches will hold it nicely anyway too...hmmmm.. 8) (if i can get eagle to behave that is :))
Sounds good Rob. I'd like to try this one.
^ sure thing man.. 8)
cap switch pop: (as schemo above)
its a strange one this time around,
sometimes it pops, sometimes it doesn't...
i'm beginning to think its a switch ground issue as when i hold the switch by the metal part the pop is almost gone..
whereas if i hold it by the plastic...pop.pop.pop...
however..
sometimes the pop is on the first click, then doesn't after...meaning the caps are now drained?....hmmmmm
tried a 1M across the switch, but the same result?...any solutions/ideas?...
just want to make sure i iron out this possible issue before doing a final layout etc...
I'm assuming we're talking about "CAPSW" in your pic, Rob? I guess you could take a BFR from each of the "floating" side of those two caps (C11, C12) to ground, just like you do with the input decoupling cap in yer average pedal. Not sure if this would affect the operation of the pedal, but it would allow the caps to discharge quietly to ground, rather than sitting there all charged up with no place to go.
Or am I talking B0ll0x? ;D
yes you are..again ;D
yep CAPSW..
BFR?..
edit: I tried 1M resistors to ground on both floating caps...still pops.
Dont take the big f**king resistors to ground - they need to go to Vref.
Not sure what this will do to the frequency response of the filter, you I guess you will find out.
B @#$%ing Resistor... :D i might have known.. ;)
cool, just tried BFR 1M resistors from floating cap to vref...voila', excellente' silencio'.....sam is spoiling us..ferrero is in the post.. ;D
works a treat...brilliant. filters seem ok too...cheers sam. 8)
Quote from: deadastronaut on June 26, 2014, 08:11:36 AM
yes you are..again ;D
Ha ha! :D
Yeah, what Sam said - small brain-fart earlier: V
REF makes much more sense. Ground would be plain daft. ::) Who the *£$% suggested that?? ;)
well after much testing i finally settled on cap values...
gives a nice bright/med/warm range for clean or distortion...
i decided to include the 22pf (maybe 47pf) in the switching too. to not taint the tremolo.
(https://dl.dropboxusercontent.com/u/7464107/tremshcaps.jpg)
Well we're only up to page 8 of this thread. You're not done already are you?
;D
no way...
ive got a SVF to try yet... ;).........................maybe. ;)
svf or srv?
both probably.. :)
ok, a little issue has arisen, (as always)
i tried this with the xrock in front through my amp earlier, and then retested through my DI/mixer..
what it is , is this..
when my guitar volume is fully off i'm getting a (tremolo) induced oscillation (not tick) ...when i turn my guitar up slightly it fades off...
here's a clip of what i mean....xrock / tremolo......then added filter.....
https://dl.dropboxusercontent.com/u/7464107/noiseybugger.mp3
hmmmmmm.....ideas?..
updated schemo:
(https://dl.dropboxusercontent.com/u/7464107/tremshifter6666.jpg)
The LFO is probably throwing quite a lot of noise onto the ground and/or +9V supply - they do that. Your xrock uses high gain discrete transistor stages, which will amplify power supply noise.
You could add more filtering to your xrock - perhaps multiple resistor/cap combos - and/or hope it gets better when you box them up.
cheers sam,
yep it was the xrock, i tried my spitfire on it, (which i had to claw back from a friend ::)) totally fine...no issue at all so far.. 8) 8) 8) 8)
so, for fun i might actually try a SVF on it while i'm at it....
i'm trying to reach page 104 to match the trem input cap.. ;D edit ( which i notice i missed on schemo) ::)
Fair enough - add some/more power filtering to the xrock (and put it in a nice metal cage) and you should be ok.
SVFs are really cool, but this is going to cost you another 2-3 op-amps. Do you want the option of HP, LP and BP outputs?
Might as well throw the kitchen sink in and do envelope control of the LFO rate and/or depth. That aught to keep the thread going for a bit longer too.
sorry getting mixed up...3 more opamps no way.. :icon_eek:
i mean the Q&D VCF...i messed with it on breadboard before and stripped away bits for uber simplicity. ..i still have my experiment notes/schemo..
i remember i had a high and low version...
http://www.diystompboxes.com/smfforum/index.php?topic=89022.0;prev_next=next
saying that, i'm pretty happy with how it is at the mo really....see how i feel. :)
right that's it...i'm done. i'm happy with it. 8)
here's a layout ive been working on for 1590bb
5 pots / 3 switches.. i'm not using onboard pots as i want to be able to shift them about.. and the 3 switches will hold the board n place too..
my pedal layout will be like this : switches at the top, to avoid kicking.
pot order: trem speed / vol / trem depth.
filter speed filter depth
- - -
0 0 0
0 0
just need to finalize pot values...
(https://dl.dropboxusercontent.com/u/7464107/tremshiftpcb.jpg)
your above circuit diagram is missing C14 at "I" on the board. I'm assuming this is input dc blocking?
yep i spotted that earlier...sorted.. ;)
Looking good.
cheers sam, i'm still getting used to eagle really..
its a bit involved , but worth the brainache to have a nice easy board to populate etc..
i just got sick of cutting pcb, printing, ironing, etching, drilling ..the dust is just plain nasty...plus i only have a tiny space to work in
so my tools always have to be put away...i don't have the luxury of a nice workshop... :'( ;D
I know exactly how you feel Rob - I expect many of us in the UK (and Europe) are in the same boat.
Where are you planning on getting the boards made?
i'l get em done at seeed , i like the green pcb.. 8)
they are reasonably quick too...around 2 weeks roughly give or take a day or 2..3.. which is just long enough to get me thinking of another 100 page project.. ::)
final clip...just showing the range of sounds etc..
https://dl.dropboxusercontent.com/u/7464107/tremshifterrange.mp3
Sounds fantastic! I'm down for a board when / if you want to sell any.
cheers man... yeah i'll do a few. after ive built / tested it. :icon_cool:
Quote from: deadastronaut on July 02, 2014, 12:22:44 PM
. . . just long enough to get me thinking of another 100 page project.. ::)
I'm not building this until we're at least up to page 26. >:( It's not a proper AstroProj unless I've changed jobs twice and grown a ponytail down to my backside. ;D
:D... sounds about right.
i'll try harder to piss everyone off with my lengthy projects in future...honest, ;D
Sounds good Rob.
I'm in for a couple PCBs when
you get to them, please.
Great circuit as always!
I might breadboard this to try it out but solely based on the soundclips I'd be down for a board (or two if you'd rather do pairs).
Quote from: bluebunny on July 02, 2014, 02:23:14 PM
I'm not building this until we're at least up to page 26.
Ok, I'll build it if we get at least into double figures... ::)
Ta da! :D :D :D
happy bunny now ? ;D
just been over schemo, and sorted final pot values etc....(went for a 22k on the vol, much better )
also using 1M logs in reverse as they behave better too. (can't be arsed with ordering reverse logs. ::))
i'm getting a little advice and help from chi boy george on the final pcb layout..he's a real star, .thanks man. 8)
so hold ya horses on the pcbs ok... ;)
Quote from: deadastronaut on July 03, 2014, 08:40:36 AM
happy bunny now ? ;D
I've not had so much fun since I raided Mr McGregor's vegetable garden... ;)
Quote from: deadastronaut on July 03, 2014, 08:40:36 AM
happy bunny now ? ;D
just been over schemo, and sorted final pot values etc....(went for a 22k on the vol, much better )
also using 1M logs in reverse as they behave better too. (can't be arsed with ordering reverse logs. ::))
i'm getting a little advice and help from chi boy george on the final pcb layout..he's a real star, .thanks man. 8)
so hold ya horses on the pcbs ok... ;)
All I can say is that Rob is a madman. Following this thread is just nuts, but the design process is fun to watch. I know I can't help with the design side, but I can chip in with a little Eagle help.
This is what I have so far for the layout. Should be pretty close to being ready for a prototype.
(http://home.comcast.net/~gprause/pictures/Tremshifter%20V2.2.png)
that looks the nuts man....nice one george..
8) 8) 8) 8) 8) 8) 8) 8) 8)
final little tweak and should be good to go...and yep, i am a little mad too..but hey, who isn't.. ;D
Quote from: deadastronaut on July 14, 2014, 06:19:49 AM
and yep, i am a little mad too..but hey, who isn't.. ;D
Hmmm... none of us. It's just you, mate. ;) So my llama tells me, anyway...
update: boards ordered today... 8)
now to wait, and then verify.. 8)
Quote from: deadastronaut on July 24, 2014, 07:13:04 AM
update: boards ordered today... 8)
now to wait, and then verify.. 8)
(http://img1.wikia.nocookie.net/__cb20130608220359/pixar/images/d/d2/Aliens_003.jpg)
Ooooh!
ooh indeed...got my box designed already.. 8)
but from lessons learnt, i'll not etch n drill till pcb is sorted.. ;)
I have mine boxed, but as I built it on vero this could be cheating ;D
(http://3.bp.blogspot.com/-OXDQy--um-k/U9KqXS3MnrI/AAAAAAAADo4/-EaWK9HF3sg/s1600/board.jpg)
(http://4.bp.blogspot.com/-awLq0Ic9gV8/U9KqZnEQ4_I/AAAAAAAADpE/DVHWRrLMokw/s1600/inside.jpg)
(http://2.bp.blogspot.com/-_87fnonHqUA/U9KqdMvCDUI/AAAAAAAADpQ/PEANZMqhnfs/s1600/outside.jpg)
For my crappy demo go to https://soundcloud.com/yeraym/tremshifter-demo (https://soundcloud.com/yeraym/tremshifter-demo). This thing is incredible fun to play. Thanks DeadAstronaut.
8)
man, that's a heavily socketed vero :icon_eek:
i think you've even broken my record for off board wiring too.. ;D
cool though, glad you got it sorted man...nice one. 8)
Hey Rob.
Any update on the boards? Looking forward to trying it out.
(http://wallpoper.com/images/00/44/60/90/waiting-cat_00446090.jpg)
Ha ha, yeah thats me....expecting them any moment...
great pic... 8)
edit: as soon as i get em, i'll build one and verify it ok.. :)
Ah, great. Glad they are on the way. ;)
guess what arrived for the cat today....the staring paid off... ;D
here they are..nice quality too... 8)..beautiful work by chi boy , george. 8) 8) 8)
(https://dl.dropboxusercontent.com/u/7464107/tremshifterpcb1.jpg)
(https://dl.dropboxusercontent.com/u/7464107/tremshifterpcb2.jpg)
should have one populated and verified asap.. ( have to re-install mrs astro's crappy lazy laptop first ::) )
the cat is happy now ... ;D
I want one! Where do I send the money :icon_biggrin:
^ to the off license.. ;D
laptop sorted, grabbing a few beers, then warming up the iron.. :icon_twisted:
This is always the exiting time. The moment of truth when a digital item become a physical item. Can't wait to know if [that] it works.
We know the design is good, now for the mass produced reality. Keep us updated!!
Cheers,
George
Will do man..,. 8)
I had to look up that comment Rob. :icon_biggrin:
We call those liquor stores here.
^ i always laugh when i see 'drug stores' on usa tv.. :icon_eek: ;D
UPDATE:
bad news first...
got a lot of sanding, etching and drilling to do... ;)
good news...
IT'S ALIVE!!!!...works flawlessy... ;) nice one george..its been a pleasure to populate.. 8) 8) 8)
just need to dab a little black nail varnish on the leds to stop light polution, and then tidy + box it up...whooooohooooo.. 8)
(https://dl.dropboxusercontent.com/u/7464107/tremshifterpopped.jpg)
its great to see an idea become reality...cheers for your help guys..sam, george ..brilliant... 8)
VERIFIED:
Is there a schematic for the boards you had made? I'd like to buy a board if any are available, but I wouldn't mind trying it on the breadboard before populating.
That sure is purtty.
Is there any LFO noise?
@leo: pm'd.
@george: nope..seems fine..even turned right up.. 8)
once i have it built i'll start a ''tremshifter thread'' with full demo, and schemo ok. 8)
Quote from: deadastronaut on August 13, 2014, 01:05:23 PM
@leo: pm'd.
@george: nope..seems fine..even turned right up.. 8)
once i have it built i'll start a ''tremshifter thread'' with full demo, and schemo ok. 8)
Great news! Looking forward to more sound samples...
Any boards for sale?
Foot in the door for two boards please. :icon_biggrin:
@erik: yes if you want one..
@john: i have 2 reserved for ya man ok..
same as before ...
£11.00 GBP includes worlwide postage ok.
pm me ok.
Looking good Rob, and always happy to help during your epic design process.
Will be interested to see the etch - is this another is the space series?
nope, not a space theme this time... ;D
something just a little 30's retro looking.. ;)
@Rob..
What specs did you use for the LDRs?
Also.... BLUE LEDS ??? Did you try any other color? Usually, LDRs respond best to Green or Orange.
Do tell the tale of the blue LEDs :D
once upon a time......
ldrs were 2k-24k ish...
i used super green for ldr 2
super blue for ldr 1.
and used 3mm super orange for indicators...
i tried lots, but these were best for their respective purposes...(well they work lol) ;D
Quote from: deadastronaut on August 14, 2014, 07:45:30 AM
nope, not a space theme this time... ;D
something just a little 30's retro looking.. ;)
I have been working on a few pedal design ideas using that Art Deco style. I love that look. Glad I'm not the only one going that direction. It's so retro future.
^ yeah makes a change eh...
should be finished up later today... 8)