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    Posts made by olliss

    • RE: Drive PWM laser using external mosfet module?

      @dc42 said in Drive PWM laser using external mosfet module?:

      @Denis said in Drive PWM laser using external mosfet module?:

      @dc42 If my laser is 24 volts, can I connect to the PWM from the LASER/VFD output and power it from the 24v input or from the heater?

      If the laser accepts a 5V or TTL level PWM input signal, then you can connect the LASER/VFD output to that and the laser power supply voltage is immaterial. Make sure that you have the Duet and laser grounds connected.

      I had out9 connected to pwm. and the power for the laser connected to the out1 connector, because I wanted to turn the power on/off with it. I tested the laser and everything seemed to work fine until I realized that even though out1 is off my diode laser fan still runs.
      Luckily nothing seems to have broken.
      so did i understand correctly that i can't control the laser power directly from the duet board when i want to turn it on/off?
      Maybe I should put a relay in between.

      posted in Laser Cutters
      ollissundefined
      olliss
    • RE: Mixed voltage for 24V fans on toolboard.

      @dc42 Have you ever tested this? it would be nice to know if this works without problems or is it just better to disconnect the 12v trace.

      posted in Duet Hardware and wiring
      ollissundefined
      olliss