Thanks for the quick response. I made a couple of test leads and measured a good 3.3V between the 3.3V, TWD, and gnd. However when I measured TWC, twice, it registered only 136mV. The Duex5 has been swapped and although much longer than the provided ribbon cable, I had an old 50 pin SCSI cable which I tried with the same negative result. So I assume that would point to a problem with the Duet-wifi card. Thanks

@bearer Thanks for the info. Added and moved a jumper, powered on and nothing went bang or started smoking. Just need to wire my LEDs now and test again. Thanks again. Paul.

It's a typo, it should say E2-E6 heaters, not E2-E7.

@flux said in Connect servo motor to Duet2Wifi with Duex5: i can use a servo OR a heater, but don't booth a same time on a same channel? Correct.

@dc42 it fixed the issue with RC4