CHASM REVERB

[deadastronaut]

@9aul:

just remembered , re: your colour changing led noise, i remember tinkering with those and the noise problem..

IIRC i put a 220uf in parallel with the colour changer and it cured it...worth a go.  


watch the skies!!!!  



i'll be populating the new pcb today...i haven't any onboard pots, but hey...

while i'm here actually, any tips for making a pcb mount pot into an onboard?...led legs?..

[bluebunny]

while i'm here actually, any tips for making a pcb mount pot into an onboard?...led legs?..

I guess LED legs would work well, but I've just used plain ol' resistor offcuts.  No one said it had to be pretty, but it works!

[samhay]

I like rectifier diode legs (1N400x) as they are a bit sturdier.
I think Stephen Giles has suggested using paper clips before.

[deadastronaut]

ahh yes, 1n4001's should be fine..cool, cheers guys.

will have to wait for my dpdts to arrive to finish it off..

[9aul]

Ah thanks Rob! nice tip, I'll try that out.

[deadastronaut]

populated: i must say these pcb's are a dream to solder up..very nice...

just waiting on my toggle switch now..should be here saturday



i'll crack on with my box while i'm wating.....

[Jdansti]

Beautiful! 

[bluebunny]

Nice one, Rob.

just waiting on my toggle switch now..should be here saturday

Swap you a toggle for a board!   

[deadastronaut]

yay!!!!...got all my bits to finish this off now,

busy this weekend, but should have it all done on monday...

[therealfindo]

Sweet!

[Mbas974]

PCB looks amazing !!
Which is the manufacturing suppier of these ?

[Les Paul Lover]

while i'm here actually, any tips for making a pcb mount pot into an onboard?...led legs?..

I guess LED legs would work well, but I've just used plain ol' resistor offcuts.  No one said it had to be pretty, but it works!

I've done that with much success. I actually soldered 2 together side by side, which didn't take very long and was oddly relaxing.

Passing the solder tip along the two legs repeatedly got a very nice, shiny, strong a smooth solder connection.

[deadastronaut]

YAY!!!!...GREAT NEWS: finished it off today.

the fabbed boards are now verified, works lovely... ,

i have some chasm reverb boards available at £11.00 GBP which includes p+p worldwide ok..

pm me for paypal details if interested ok.

: i used off board pots, as onboard pots  are rare as hens teeth in the UK.. but still a  nice clean easy build,.

[armdnrdy]

Here is a way to emulate "on board" pots with a bit of vero and a few right angle header pins.

The images depict the long pin pots but can be made shorter as needed.

The pots used are the 90 degree board mount type that are fairly common.

[deadastronaut]

nifty mod, nice one larry...

[Will.mendil]

Cool idea. It's cool how the dimension are the same

[armdnrdy]

Yes...it was mechanically engineered over the course of many minutes to work out that way. 

It's good in a pinch because some values are a bit hard to find in the right angle pot department.

Especially reverse taper!

[che47audio]

Ok, I've had a good crack at this pedal. I'm a bit of a newbie to DIY pedal making and maybe I bit off a little too much with this as my third build but I am determined to get it working!
I'm not to far away, I have quite a lot of it working but some things not working as expected. I've made myself an audio probe now so I've been able to probe in and test for signals at any point in the circuit ( should have
done this ages ago!!!).

So, with the foot switch on I have a signal (an decent output). The volume, mix and damp pots are working perfectly. I'm really pleased with the initial results and i think I'm tantalisingly close to completing it.

The problems: the decay knob and osc switch are currently doing nothing, they don't effect the sound at all. I've done all the obvious checks (component values, reflowed, checked for bridges) . If you could give me any pointers as to what I should be expecting to find at the pins on the decay knob it would be most appreciated, infact any clue of the signal flow of the circuit would really help as I don't really understand how it works and that would allow me to check through methodically rather than randomly which is what I am currently doing. I see that the one pin is connected to ground.

My other problem is that in one position the footwswitch engages the circuit and led. In the other position (bypassed) I get no signal through at all. I would like to get the other bits sorted first, unless you think this is related?

Cheers

[JZA]

Hi , just built mine, with one little problem.

There is a constant whine  along  with the wet signal,  high pitched tone ?

The only changes I made were using 1n914 diodes instead of the 1n418 is it?

Any thoughts please? 

Is this thread still alive?

JZA

[deadastronaut]

^ not sure if the diodes will matter that much,

which layout did you use?..the diy pdf, or did you buy a pcb.?

have you checked around the oscillation on/off switch...?