calling all Car and Tractor specialist

Started by Kipper4, February 19, 2017, 06:48:37 AM

Previous topic - Next topic

amptramp

You can also use linear variable differential transformers.  This is a transformer with a moveable core where there are two windings that are wired in series opposition.  Move it in one direction and the AC voltage increases.  Move it the other way and it increases but in the opposite phase.  It requires some circuitry, namely, an AC source (AC line voltage is OK) and an output amplifier that is also a phase detector, multiplying the output with the input signal.  For a rotary control, synchros, selsyns and resolvers have been used for years in aircraft instruments.  There are lots of options - you just have to decide on cost, complexity and suitability for the intended purpose.

duck_arse

Quote from: Kipper4 on February 21, 2017, 01:52:01 PM
.....
Getting out of the bath tonight,  ......

that time of year again already?

if you want IR transistor/diode/receiver, hack open an old mouse, one with one ball will have at least two sets.
" I will say no more "

feddozz

Quote from: deadastronaut on February 21, 2017, 06:42:57 AM
hi rich, heres a nifty lil circuit...

might give this a go myself at some point.. 8)


https://www.youtube.com/watch?v=AmkYwvCjXoY

This looks brilliantly simple. I wander if it actually works: does it gives a gradual increase in LED brightness, is the sweep  comfortable? H own close can the foot get to the sensor/emitter?

Has anybody implemented it yet?
And "dog balls on your face"...

EBK

#43
Quote from: duck_arse on February 22, 2017, 08:51:18 AM
hack open an old mouse, one with one ball . . .
Before you do that, you should probably ask him how he lost his other ball.  He might have some interesting stories to tell.
  • SUPPORTER
Technical difficulties.  Please stand by.

Kipper4

Lots of good options here.
I'm glad I asked.

Cheeky git Stephen.
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

thermionix

Quote from: EBK on February 22, 2017, 09:28:35 AM
Quote from: duck_arse on February 22, 2017, 08:51:18 AM
hack open an old mouse, one with one ball . . .
Before you do that, you should probably ask him how he lost his other ball.  He might have some interesting stories to tell.

I'm reminded of "The Rodeo Song"...still cracks me up every time I hear it.  Probably NSFDIYSB so you can look it up on youtube if so inclined.

"Well it's 40 below and..."

Jdansti

Quote from: deadastronaut on February 21, 2017, 06:42:57 AM
hi rich, heres a nifty lil circuit...

might give this a go myself at some point.. 8)


https://www.youtube.com/watch?v=AmkYwvCjXoY


Based on comments for the video, if you need the LED to be normally on and turn off as your foot gets closer to the sensor, then use a PNP transistor. If you want me he opposite, use NPN. I assume for a wah, you'd use a vactrol with the LED end connected where the LED is shown on his schematic.
  • SUPPORTER
R.G. Keene: EXPECT there to be errors, and defeat them...

deadastronaut

John, yup..

thats how i,d implement it...

i have some RX TX on order, its so simple its worth a bread up anyway.. 8)

see how it responds...

wah, vol, whatever...
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//

deadastronaut

Hi guys,

i pulled some 3mm RX TX leds from an old light sensor night light thingy,..

and have that guys circuit on breadboard...

works great, i swapped his 100k pot for a 1M....

i get about 1.5 inch range before it starts to light up....

the action is very smooth too....a nice rising light...cool.

i might get my 5mm ones in the post today, so i,ll see how they perform..

see if the range differs etc...works perfectly in total darkness and normal light conditions too..

im running it on 9v...

note, the RX,TX leds have to be butted up to each other....

great lil circuit....

https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//

Kipper4

So what should i search for to make the circuit D.A. made please.
photo transistors. Photo diodes?

ie what is a Tx Rx?
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

EBK

#50
Tx=Transmitter Rx= Receiver

Sometimes called an IR matched pair or emitter/detector pair or a photo detector or a photogate....
  • SUPPORTER
Technical difficulties.  Please stand by.

thermionix

#51
Quote from: Kipper4 on February 24, 2017, 04:54:24 PM
what is a Tx Rx?

Texas prescription drug?

No, probably transmit/receive.

(Edit- beat by EBK)


feddozz

And "dog balls on your face"...

Kipper4

#54
Will do Vince. Thanks
I love their wire bundles.

https://www.bitsbox.co.uk/index.php?main_page=index&cPath=172_180&zenid=usce55o0ticum3b7q8p0ddpr74


nice choice. (not affiliated)
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

Kipper4

This Ir sensor has some nice potential applications.
interactive gain control for dirt boxs
speed and depth in tremolos, vibes.
swellers
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

Kipper4

Great stuff as soon as I get back off holiday. I'll breadboard some stuff.
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

deadastronaut

Get the 5mm ones...

you get 2 sets off ebay for 1.79.

8)

i got the 3mm ones by mistake, have ordered the 5mm,s...

with the 3mm,s you get around 1.5" range....roughly an average wah pedal gap..

but with the 5mm,s the guy on the vid has a much longer range....better adjustment etc...
https://www.youtube.com/user/100roberthenry
https://deadastronaut.wixsite.com/effects

chasm reverb/tremshifter/faze filter/abductor II delay/timestream reverb/dreamtime delay/skinwalker hi gain dist/black triangle OD/ nano drums/space patrol fuzz//

Kipper4

Thanks Rob. I think I saw those last night browsing.
I'll order some when I return.

I also have, unrelated, some of these. I bought hoping to use one day.
http://www.bitsbox.co.uk/data/optos/4N35.pdf
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

Kipper4

I like the look of the led type packaged ones that can be poked through the enclosure but will probably be weary of the spacing which I guess could be critical.
Whats your experience with spacings Rob?
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/