Can't control fan with M106

waley

Hi,

I'm scratching my head on this one and would appreciate a steer in the right direction. I have a dual extruder setup with a fan for each extruder (identical 5V fans) and a fan for part cooling.

FAN0: Extruder 1
FAN1: Extruder 2
FAN2: Part Cooling

I can control fans 0 and 2 with the M106 command, but I can't control FAN1. I have confirmed there is nothing wrong with the wiring/fan by unplugging the fan from the Duet headers and connecting to some external 5V header pins.

The fans are configured as follows:
M106 P0 S1 I0 F500
M106 P1 S1 I0 F500
M106 P2 S0 I0 F500

Software information:
Firmware Name: RepRapFirmware for Duet WiFi
Firmware Electronics: Duet WiFi 1.0
Firmware Version: 1.17e (2017-02-10)
WiFi Server Version: 1.03 (ch fork)
Web Interface Version: 1.14a

Any help would be much appreciated!

dc42

See the note at the end of this section: https://duet3d.com/wiki/Connecting_and_configuring_fans#G-code_controlled_fans.