calling all Car and Tractor specialist

[deadastronaut]

They like to be butted right up to each other side by side....

Yeah get the led shape....

[Kipper4]

Cheers man.

[Jdansti]

Get the 5mm ones...

you get 2 sets off ebay for 1.79.



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...

If you still don't get an appropriate range, try adding one or more additional IR emitters (with their own resistors) so you can reflect more IR light back down to the sensor.

[deadastronaut]

Cheers john,  i,ll give that a whirl...

drew up the classic morley wah, and will add this to it later..

then try to switch between wah/vol.....

ive got a chepo plastic vol pedal i can butcher...

[Kipper4]

You love that Morley don't ya Rob?
Is it the mfb filter?
I'm about to board a plane. I'll try it with a svf when I'm back at the breadboard.
Hope it goes ok.

[deadastronaut]

Hi rich,  have a great holiday man,

yeah its a great simple, tweakable wah...no inductors etc...

[Kipper4]

Yer thanks man will do.
I like the Morley too. You used a tweeted version in the light wah (crying time) didn't you?
I built the crying time.
IIRC I preferred the sound of a 4558 chip it was somewhat creamier than a tl072, might just be my ears or bad memory.

[deadastronaut]

crying time?..never heard of it...

[Kipper4]

Jon did a version of the light wah without the light.
Maybe I just renamed it. Let me go search.

Apparently on Madbeans. I can't remember my log in so can't leave a link.
Half a job....

[feddozz]

Could someone suggest a good wah circuit that can be used with the ir sensors?

[Kipper4]

Iductorless wah for example.

[deadastronaut]

Or morley,

idiot wah...

btw i got my 5mm Rx tx  much better range, and adjustment..

going to have to experiment with how they should be mounted....as they like being butted

Right up next to each other....hmmmm...i,ll pop em in a pice of card and see how they perform


bear in mind that it could be used for all sorts of uses, not just wah, vol....

[Jdansti]

>bear in mind that it could be used for all sorts of uses, not just wah, vol....


Yep. I'm going to use them to turn LEDs on and off on a panel I'll mount inside the house to let me know if the garage doors are open or closed.

[Kipper4]

2 IR pairs ordered.
Here I go.

[Kipper4]

Proximty sensor drawing trial.
Anyone confirm I got this right please
Unsure of reciver orientation.....
Just using a common or garden PNP jelly bean.....

[deadastronaut]

i found the 2 RX (BLACK) with TX in the middle worked well..

[Kipper4]

I think I smoked my Tx Rx.
I know I smoked a 1M pot. I reccomend putting a series R with the lug to V+ at this stage.

Anyway of checking if i did damage the Tx  Rx?

[Kipper4]

just did a rough test with the ohm meter and the photo diode i used for the test circuit is measuring in the kilohms region.
The spare I didnt use is measuring in the megohms region.

Any ideas on how to test an infrared led guys?
edit. When I check the forward voltage it measures 1v2 Is this a good sign?
link to data
http://www.digikey.co.uk/catalog/en/partgroup/3mm-infrared-led-emitters/11333

[Jdansti]

Try checking continuity in both directions. You should have continuity in one direction but not the other.

[samhay]

>Any ideas on how to test an infrared led guys?

Do you have a digital camera? The detector in these (and presumably in your phone) can 'see' well into the near-IR, so if you point the camera at the LED (while LED is on) and look through the view screen, you should be able to see the LED.
You can check this by looking at a TV, stereo, whatever remote. The LED in the end of these should come on when you press a button.