HPC LS3020 connections - July 2012¶

• Table of contents
• HPC LS3020 connections - July 2012
  • Wiring diagram
  • Laser ON cable
  • Y stepper cable
  • Stepper driver orientation

Wiring diagram¶

Here is a schematic diagram of how everything should be wired up (from the forum):

This is without PWM connected.

Laser ON cable¶

The laser-on cable, as it comes shipped with the laser cutter needs to have one wire wire switched over, from this:

... to this:

It then plugs into the mainboard like this:

Y stepper cable¶

The Y stepper cable (with a 4-pin JST connector on the end) may be too short to reach the proper socket on the LAOS mainboard v0.3 - this can be solved by manually splicing some extra wires, to extend it by about 15 cm:

Stepper driver orientation¶

Be very careful how you place the stepper drivers on the mainboard. Mistakes can blow up both the stepper driver and the mbed controller!

Here is the proper orientation for the purple "StepStick" drivers, with heatsinks mounted on top of the A3984 driver IC's: