Knobs/Switches for the OI

[chilidawg87]

hey tom thanks for the pictures they were a big help but i still dont completely understand...so say i wanted to wire up a pot to p3_x i tried it but i didnt know what to connect each lead on the pot to. i felt somewhat confused when i found there was 3 leads on the pot. this is what i did:



(the underscore line signifies a connection)




(pin 4 ground)_______________ Outside Lead on POT
(Pin 3 x)____________________ Middle Lead on POT


when i did this ran it through our dashboard and it wasn changing values

lemme know what to do, thanks
-Ben

[Greg McCoy]

Look on page 5 of the OI Reference Guide (which Damian previously posted). Pots need to be wired to the +5V pin (which is pin 1) rather than ground. The other end goes to the analog input. It doesn't really matter which way you connect it as long as you have the "wiper" pin (typically the middle) and one of the edge pins. Also, you can use an ohmmeter to test the pot before you wire it.

Audio pots are generally bad for OI use, because they are made to be used as a volume control and therefore are not linear. Each degree of rotation of the pot does not result in the same change in resistance.