Duet 2 Using the Expansion Header Pins for Extra Endstop

richardmckenna

Hi all,

Just a quick question. I am in need of an extra endstop on a Duet 2 WiFi for a CNC machine, so 6 endstops in total.

Is it possible to use the endstop pins on the expansion header directly. i.e wire my 6th endstop directly to pins 2, 3 and 4 for E2 STOP?

It would be much cheaper than buying a Duex2/5 just for an endstop.

Thanks,
Richard

fcwilt

Hi,

You should be able to with no problems other than coming up with a good, reliable, unambiguous way to connect the wires.

Frederick

richardmckenna

@fcwilt Perfect thanks. Yeah, I'll probably just make a simple breakout board.

fcwilt

@fcwilt Perfect thanks. Yeah, I'll probably just make a simple breakout board.

I vaguely recall seeing a general purpose such device for that use. It was not the special one from E3D for connecting external drivers.

Frederick

richardmckenna

@fcwilt only seem to be able to find the breakout for drivers, will keep looking. Thanks.

zapta

@richardmckenna, if it helps, you can find in this link kicad files of a similar breakout board for bltouch connections.

richardmckenna

@zapta yes, that's pretty much exactly what I was thinking. Spot on thanks!