CNC-Pendant-Firmware
This is firmware to run on an Arduino Pro Micro (preferred) or Arduino Nano to interface a popular style of wired CNC pendant to the PanelDue port of Duet electronics. Build it using Arduino.
Pendant to Arduino Pro Micro wiring:
ProMicro Pendant Wire colours
VCC +5V red
GND 0V, black
COM, orange/black
CN, blue/black
LED- white/black
D2 A green
D3 B white
D4 X yellow
D5 Y yellow/black
D6 Z brown
D7 4 brown/black
D8 5 powder (if present)
D9 6 powder/black (if present)
D10 LED+ green/black
A0 STOP blue
A1 X1 grey
A2 X10 grey/black
A3 X100 orange
NC /A, violet
/B violet/black
Arduino to Duet PanelDue connector wiring (3- or 4-core cable):
ProMicro Duet
VCC +5V (red wire)
GND GND (yellow wire
TX1/D0 Through 6K8 resistor to URXD, also connect 10K resistor between URXD and GND (blue wire from resistor junction to Duet URXD0)
To connect a PanelDue as well (the pendant passes the PanelDue commands through):
PanelDue +5V to +5V/VCC (red wire)
PanelDue GND to GND (yellow wire)
PanelDue DIN to Duet UTXD or IO_0_OUT (green wire)
PanelDue DOUT to Arduino RX0 (blue wire of PanelDuet cable to green wire of pendant cable)
For wiring differences and hardware changes needed if using an Arduino Nano, see the comments at the start of the CNC-pendant.ino file.
Support requests
Please use the forum for support requests.