Having a little bit of difficulty while trying to set up one of Dave's drivers. Must be just a brain fart, but...
Per the instructions I applied 5V power and 5V modulation signal to the channel being adjusted which was "driving" a fluke DMM on 10A scale.
Adjusting the 'offset' pot never produced any current reading whatsoever, even after the red light came on.
I was able to adjust the "drive" pot to obtain the desired current, but its behavior seemed to vary based on where the "offset" pot was left.
I also observed that if the modulation was brought to zero, and then back to 5v, the driver would not turn the drive current back up; it sat at zero.
What am I doing wrong?
Thanks,
Mike