I’ve been working with the Pololu RC Servo Multiplexer and have a general question about the “Select” pins. I’m running into a problem isolating voltages. I have servos and a battery system that I would like the Pololu RC Servo Multiplexer to draw from and route. The R/X system has a different battery and voltage that I would like to use as the “select” for the Pololu RC Servo Multiplexer but not power it.
So far the only way I can get the Pololu RC Servo Multiplexer to respond is to connect it to the R/X with a standard 3wire servo wire. However this also causes the Pololu RC Servo Multiplexer to draw power from the R/X. My original thought is I could just use the signal wire from a standard 3wire servo wire from the R/X to the Pololu RC Servo Multiplexer, thus eliminating the power draw.
Is there a way I can Isolate the R/X signal from the power so that the signal from the R/X can operate the “SEL” on the Pololu RC Servo Multiplexer?
Thanks