Revision to Wiring and hardware differences from RAMPS etc
| * One bed heater wire to the BED- pin on the Duet bed heater terminal block |
| * Other bed heater wire to the +ve output of the bed heater PSU |
| * -ve output of the bed heater PSU to the -ve side of the |
| * -ve output of the bed heater PSU to the -ve side of the |
| * Do not connect the bed heater PSU +ve output to the Duet. |
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