Can I use a single GND connection to the hotend?
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I am in the process of wiring up a machine and just to save some cabling I was thinking to run a single GND wire. Technically there should not be any difference and if I connect it to the heater GND it should be able to handle the increased current. I use 20 AWG wire.
The only reason I could think of is if there is some measuring circuitry on the GND legs?
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@fho said in Can I use a single GND connection to the hotend?:
heater GND
heater gnd is where the switching is done, so unless you want to switch everything when the heater does, then no. (you dont)
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@bearer makes sense. More ground cables it is then
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@bearer Looking at the schematic the fans are all powered from V_FAN ... at least there it should be possible to use a single wire on the positive connection?
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Fans and heaters are switched on the ground side. But you can have one common supply cable, ie, 24V or whatever you got. If you use a special supply for the fans they would need their own cable.
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No idea how to mark this as solved. But ... solved. Thanks.
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@fho said in Can I use a single GND connection to the hotend?:
mark this as solved
https://forum.duet3d.com/topic/7773/forum-feature-mark-as-question-solved
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Those options do not exist for me
https://imgur.com/a/hwY3EUN
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Your photo shows Ask as Question. Choose that first and then the option mark as solved will show up.
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its also only available for the top post afaiknope, just follow the two step instructions.
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Ok ... that makes sense
