Limited OI Range From Linear Slide Potentiometers

[Mike Betts]

Originally Posted by Chaychay

Mr. Pierce, we tried disconnecting the ground as well, and got the exact same range of data from the OI. (0-255, but from 80% motion of pot)

Mr. Anderson, what is the "low end" of the pot?, what is the "wiper"?, sorry about my lack of terminology. Why a 22K resistor, why not say, a 50K?

Thanks for your help!

Jay,

Read paragraph 3 of page 5 of this document to understand what is happening.

Regards,

Mike

[Dave K.]

Originally Posted by Mike Betts

Jay,

Read paragraph 3 of page 5 of this document to understand what is happening.

Regards,

Mike

I'm glad to see that they've finally posted an updated version of the OI document with some additional explanation, but my measurements here indicate that the "cable off" threshold is higher than the 50mV they state. On one unit here, where the +5V Aux voltage was running about 100mV high, the end of travel was reached at 632mV and the cable disconnect voltage was right around 500mV.