Duet 3 Flyback on Outs 1,2,3?
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I'm currently working on a project using the Duet 3 6HC and 3HC. I'd like to drive some solenoids with OUT1/2/3 on the 6HC (and 3HC as well). In the documentation it says "If you connect high-current inductive loads to these outputs, you must use external flyback diodes." here: https://duet3d.dozuki.com/Wiki/Duet_3_Mainboard_6HC_Hardware_Overview. It looks like D26-D28 are flyback diodes? I couldn't find a schematic to confirm. I also noticed they are not on OUT0/1/2 on the 3HC... I could wire them externally but it'll make the wiring a little gross and would like to avoid if possible. Any guidance would be helpful.
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@gspeterso said in Duet 3 Flyback on Outs 1,2,3?:
I couldn't find a schematic to confirm.
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Thanks, sorry for my ineptitude on finding the schematics.
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No worries! And to be fair, they've "just" set up the duet3d github repo so most searches will probably lead you to the old one.
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You are correct, flyback diodes are included on outputs 123 (but not 0) of the MB6HC but not on 012 of the EXP3HC.
