Hi, I just recieved my new motor driven potentiometer, such as you find in mixing consols and DMX-controllers, but I have note managed to figure out how to wire it. Can somebody help?
It has two pins for the motor, so it needs an H-bridge, but I dont know how to read its value, since it does not have three pins, such as normal potentiometers. In addition to the two motor pins (+ and -) it has six other pins, in the other end! I dont think all of them should be connected to the Arduino, but I have no idea. I have been looking around on the internet with no luck. Pictures of the potentiometer is attached (if that worked), thanks for any reply!
(P.S., there are som numbers and letters written on it: "952C 10KB", but I am not sure if it helps. The motor requiers 10V)
(P.S.S., I have no code, do you think the code will be similar to other potentiometers? Or am I missing something more?)
I have tried to google the information I could find on the product, but I could not find anything, so I just tried some random wiring and it worked on one of them!
I expect there are two potentiometers , which are the six pins , in two rows of three ( stereo !). You can check out each set with a multimeter to find the wiper .
In my little experience with sound tech, those wiper style pots are normally mono - instruments and microphones by themselves are mono after all (there's a balance pot on the channel to place it spatially).
Looking at the image, on the left hand side there are two pins that appear to be primarily mechanical, possibly offering grounded shielding as well, and four pins that look more like electrical pins. No idea why there would be four - maybe there's an indicator LED in there, or maybe it's for secondary position feedback or so?
The motor has two pins which is exactly as expected.
A motor pot usually has two channels, one for position feedback, used at DC, and one for signal - check
out the 6 pins with a meter to find out the connections. A multimeter can answer a whole load of
questions that eyes alone cannot.
I figured that only four of the six pins actually gave an output, and that depending on how you wire it, you can get both a linear output and a logaritmic one. That is probably why there is four pins.
Two tracks does make sense indeed: a linear one for position feedback and a separate logarithmic one for the actual volume setting. Having two pots could be done with four pins: the end points shared and one for each of the wipers - as long as the audio signal itself is not routed through it.
Do measure more. See if the two outer pins (with the wave shape) are indeed connected, and whether they are part of the pot's arrangement.
