T-Drive Switch Problems

[e_man]

I’m having the same troubles with my T-Drive.  The switch makes no difference.

I don’t have a rheostat on hand.  (I do have some trim pots though)

Do you have a feel for what resistor value would be close to your setting?  I can’t really determine the position of Oscar’s rheostat, as well as not being able to determine the approximate resistance even if I could! (not really a total newb, but still trying to grasp basic electronics)  I’m guessing he used your recommended 20k.

If a trim pot can be used, can you advise me on how to wire it?  You know with the 3 legs and all…

Thanks for any help you can give.

BTW this pedal sounds great!

[Oscar Lamas]

Hi there, sorry for the late response, I put a 20K trimmer on the R5 position as suggested by Cybercow, that was genius. Here is an image I got

got from        https://wiraelectrical.com/potentiometer-vs-rheostat/.

You can use a trim-pot by just using the A and B connections to dial in the desired ohms.

Rheostats

[Barry]

Changer R5 to something between 100k to 220k and let me know how that works out.

Thanks,

[e_man]

Sorry to take so long to respond.

I just installed a 150k at R5 and there is definitely a difference in switch positions now!

I might should have gone with 220k but figured I’d split the difference.

Thanks for your help Barry, this really is a great sounding circuit.

[Author]

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