Since adding a laser Z-axis to my MPCNC toolkit, I was looking for a quick way to swap between my CNC and laser Z-axis. I originally had all of the wires with separate connectors to make it hot-swappable and I ended up breaking a few wires at the connector due to the movement of the Z-axis.
After a few trial and error attempts, I ended up designing a new motor mount for the Z-axis to hold a DB9 connector with all the supporting wires for swapping Z-axis assemblies with ease.
Most of the weight of the cable is being held up via retractable badge ID holders which doesn’t add unnecessary strain to the Z-axis core.
- x1 Retractable ID Badge Holder
- 20ft 18 AWG Multi 9 Conductor Blue Speed Wire 18 Gauge Copper Stranded Cable
- 1 inch (Diameter) 3:1 Waterproof Heat Shrink Tubing Kit
- x2 Female DB9 RS232 D-Sub Serial Connectors
- x1 Male DB9 RS232 D-Sub Serial Connector
Note: These are the correct wire colors for my Z motor and laser assembly. Your mileage may vary. Double-check all wiring before applying power!
|#||Umbilical Cable:||Laser Head:||CNC Head:|
|1||Z-Motor: Black||Z-Motor: Black||Z-Motor: Blue|
|2||Z-Motor: Green||Z-Motor: Green||Z-Motor: Yellow|
|3||Z-Motor: Blue||Z-Motor: Blue||Z-Motor: Green|
|4||Z-Motor: Red||Z-Motor: Red||Z-Motor: Red|
|5||Laser: 5V Signal Pin (Purple)||Laser: 5V Signal Pin||Empty|
|6||Laser: Ground (Yellow)||Laser: Ground||Empty|
|7||Laser: 12v+ (White)||Laser: 12v+||Empty|
|8||Buck Converter –||Empty||Empty|
|9||Buck Converter +||Empty||Empty|