Maslow Electronics Wiring Diagram for Aux Outputs

Technical Details
19

I would see a need for following aux functions:

  1. Estop (we would probably not rely on the arduino, but have the estops connected to a relay that shuts power to router/spindle and maslow control board/motors

I am a big advocate of something like:
https://www.rockler.com/safety-power-tool-switch

  1. Spindle on/off (this has been implemented)
  1. Laser on/off (I would use this for laser X-hairs). For true lasercutter control we would want to implement spindle speed control so we can control laser power
  1. Spindle speed control - Most spindles take a 0-10v signal, so could use PWM to get a 0-5V signal, and use an opamp or external module to convert the 0-5V to 0-10V
    e.g. https://www.amazon.com/MagiDeal-Digital-Analog-Tranformer-Converter/dp/B00UIZKYAS

there is sufficient interest, please do implement this :slight_smile:

  1. Z- limit switch
    6)Z+ limit switch
    7/8) limit switches for chains (e.g. to detect chain wrapped around sprocket, or sled pulled against sprocket

re: limit switches, most CNC machines that I have seen use the same pin for both
limit switches on an axis, it depends on knowing what direction it was moving to
know what switch it triggered (and generally back off just enough to not trigger
the switch so that it doesn’t start up with an unknown limit switch triggered)

limit switches for the chain are very hard to do given the wide range of angles
that the chain can have. The utility of such switches is also somewhat murky,
you can’t use them for homing, and it’s not clear how much a limit switch can
protect you from chain wrap or other problems.

1 Like