Topics created by glenmo

@glenmo said in Fan 1 ground pullup issue:

Thanks for the replies. I am using a fairly basic 2 channel "arduino" style relay with optocoupler Hobbycomponents HCARDU0043 to be precise. I take 5V and ground from the Duet2 expansion port and then use the Fan2 Ground side?? connector to bring the relay "in" pin low and activate the relay.

If you are connecting all 3 channels of the relay board to the Duet in the same way then I can think of a few possibilities:

Fan 1 output mosfet blown short-circuit. You can check this by connecting a fan to the output instead of connecting the output to the relay. Bad connection between the relay board input of that channel and either FAN1- or +5V (or those wires swapped) Blown (i.e. open circuit input) optocoupler on the relay board, or bad soldering of the optocoupler or the input connector. Check this by swapping two relay channels.

@glenmo G92 Z0 would be simpler.

@glenmo said in pullups on e?_stop pins:

Hi, the tutorial for setting up triggers using the e?_stop pins etc. states that pullups should be set, but the docs say
"RRF 3.x - Pull up resistors on Duet 2/DueX5 inputs should be configured for connecting a digital input (like a switch, BLtouch, etc) only on inputs not labelled "n"Stop (xstop, ystop etc)."
Does this include the E2,3,4,5,6_stop pins?? when used for simple trigger switches? Thanks

If you connect endstop switches directly to the pins on the expansion bus, you should enable the pullup resistors because there are no pullup resistors connected to those signals and no protection resistors. If you connect them to endstop inputs on the Duet or the DueX then you should not enable them, because doing so will reduce the noise margin because of the series protection resistor.

@jay_s_uk Many thanks, sorted, the instructions were incorrect / for an older firmware using exp.19 instead of e5stop works perfectly.