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duet 3 Mainboard-Duet3D-Electronics

How To Wire The Duet 3 Mainboard 6HC

The Duet 3 is a great board for your 3d printer, but wiring it up can be confusing. This tutorial will walk you through how to wire the Duet 3 mainboard 6hc to your Workhorse 3d printer.

Duet Wiring Instructions

This is a guide on how to wire the Duet board for your printer. Once you have mounted the Duet 3 and 24v power supply to your 3d printer you can began to wire the Duet 3 Mainboard. I’m using the Duet 3 in standalone mode so I won’t be covering the Raspberry Pi.

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Duet 3 Wiring Guide – Power Supply

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AC power to power supply

Connect the Black wire into the “L” terminal Connect the White wire into the “N” terminal Connect the Green wire into the Ground terminal  The wire colors meet US color standards for AC. Colors. The positive wire from the power supply goes to the terminal marked +. Do not solder the power supply wires because the heat generated from the current can melt the solder causing the connection to become loose. Duet3d recommends to use bootlace ferrules on the end of the wires and to re-tighten the terminal block screws after doing the first few prints, because  heat generated by the high can cause them to creep and become loose.

Connect the terminal block labelled POWER IN to your power supply Make sure to get the polarity right and the wires you use are of proper gauge size to carry the current to supply the bed heater and electronics. 

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Do not solder the power supply wires because the heat generated from the current can melt the solder causing the connection to become loose. Duet3d recommends to use bootlace ferrules on the end of the wires and to re-tighten the terminal block screws after doing the first few prints, because  heat generated by the high can cause them to creep and become loose.

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WorkHorse 3D Printer Stepper Motor Wiring
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Plug in Duet mainboard power supply into the terminal block marked + and -. Make sure to get the polarity right or bad things happen

Duet 3 Wiring  l  Stepper Motors

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The Duet 3 MB6HC main board has six stepper motor outputs.

Stepper motor colour coding for 3d printers is as follows: Black,Green,Blue,Red or the reverse sequence but check the motors by putting the wires or coils in pairs. 

  • first pair on pin 1 and 2
  • second pair on pin 3 and 4
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It’s fine if the order of the stepper motor wires are reversed but the pairs must be kept together – it will just make the motor run the opposite direction which can be changed with M569.

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Letters or numbers to designate coils. 

The standard is  A+,A-,B+,B- (or B-.B+,A-,A+) on the labelling of Duet3d boards.

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Duet 3 Wiring – Endstops

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