Skip to main content

Site Navigation

Your Account

Choose Language

Help

Revision to Connecting and configuring fans

Tony

=== Cautions when connecting brushed DC motors e.g. air pumps ===
 
* Duet 06 and 085 boards, and Duet WiFi2 (WiFi/Ethernet) boards prior to PCB revision 1.02, do not have built-in flyback diodes on the fan outputs , because standard brushless fan motors do not need them.
* Duet 06 and 085 boards, and Duet WiFi2 (WiFi/Ethernet) boards prior to PCB revision 1.02, do not have built-in flyback diodes on the fan outputs , because standard brushless fan motors do not need them.
** If you connect a ''brushed'' DC motor to a fan output, you must connect a flyback diode in parallel with the motor.
** A 1N400x diode (where x = any digit in 1..7) is suitable. Connect the cathode of the diode (the end with the stripe) to the positive fan wire (the V_FAN terminal on the Duet) and anode to the negative fan wire (the FANx- terminal on the Duet).

To undo the changes made by this version, click 'Revert Changes.' This will automatically restore the previous version of this guide.

Revert Changes