I am using a TEENSY board to create a midi controller an the pots skip about 10% when they hit 50%. I have teste the voltage with a multimeter and that skips too so it isnt a coding problem. Any helo would be greatly apprciated. THANKS
Hi David
I don’t understand what you mean by “skip”. But it sounds like you have logarithmic pots and not linear. That might seem like a “skip” where the resistance changes much faster per degree of rotation towards one end.
Most of the “cheaper” so called log pots are in fact 2 or 3 sections of linear resistance The initial 50% or so has a flatter slope which transforms to a steeper slope after about 50% or so. This may be what you have.
Have a look for any markings. If it has an “A” marked on it it is log and for linear the marking will be “B”
Cheers Bob
Thanks for yout help. The pots have a B marked on them and they are 100k.
What I mean by skipping is as soon as I go poast 50% on the pot the voltage (and the serial monitor) skips up about 10 percent so it isnt smooth. The same things happens when I turn it the other way.
Any help is greatly apprceiated. THANKS
Hi David.
That is a linear pot.
Sounds faulty, I would suggest try another one.
Cheers Bob
Yeah Iv tried a few and still get the same result. It wouldnt be some sort of power issue? or something like that?
Thanks again for all your help
Hi @David63458 is there a schematic diagram or even a picture you might be able to share? Pictures help a lot.
This kind of highly-nonlinear behaviour kind of suggests to me that there may be another resistor in the network somewhere
If you have a spare pot you can also check its linearity by measuring resistance across the wiper and on of the other pins.