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.

I have been using this relay to switch on and off my router with no problems but now when I use Fan1 ground pin to bring the other relay "in" pin low, the relay activates all the time and won't switch off The Fan1 ground pin is low all the time regardless of my commands

The vacuum is just a henry by the way for dust collection. My setup works on Fan0 and Fan2 but not Fan1 which is why I am confused.

I could leave it like this but I would like to know why Fan1 isn't working the same way as the other 2.

M42 P2 S1 brings on the Router and M42 P0 S1 brings on the hoover no problem. Thanks.

I already control my simple router via a relay and Fan2 switching a ground to the relay with a pullup, ""M950 P0 C"^fan2" ;sets fan 2 connector left side/top pin to GPIO output with Pullup to GPIO pin P0"" and have tried to do the same with the output from Fan1 to control a vacuum.
The pullup on the ground side of fan0 and fan2 seem to work fine but the ground side of Fan1 seems to be shorted to ground despite setting a pullup, any ideas?? Thanks

Looks like I found it G10 L20 P2 (P1?) Z0

Hi, I have a workbee on a Duet 2 eth that I have added trigger buttons to successfully and now I am trying to add a physical button that will "SET Z=0" with a view to building a small control pad that will move the gantry and set axis to 0 with physical buttons instead of using the DWC. I cannot find any GCODE that will allow me to set the current position of the axis to 0!
Have I overlooked the required gcode or is there another type of command that can be sent through USB / UART to do this? thanks.

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

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

Hi, I am following the guide for adding triggers / buttons to the workbee cnc.

M950 J4 C"!^e5stop" is used to define the pin but when I enter this I get

ERROR M950 unknown pin name 'e5stop' I get the same for e2stop, e3stop etc.

Any ideas much appreciated