Welcome to Our Community

Some features disabled for guests. Register Today.

Sign Up

Need details about PWM output of GRBL and Estlcam

Discussion in 'CNC Mills/Routers' started by Mehadi Saki, Aug 31, 2017.

Tags:
  1. Mehadi Saki

    Mehadi Saki New
    Builder

    Joined:
    Apr 27, 2017
    Messages:
    4
    Likes Received:
    0
    Hi
    I am using Estlcam v10 with Arduino uno and GRBL1.1
    I face some problem. Plz anyone help me.

    Problem 1- How to use low power triggered relay for Spindle on/off?

    Problem 2- How I use PWM output for spindle? I mean wiring of spindle. Is there need any external PWM hardware? I need more details.

    Thanks
     
    #1 Mehadi Saki, Aug 31, 2017
  2. phil from seattle

    phil from seattle Journeyman
    Builder

    Joined:
    Mar 17, 2017
    Messages:
    312
    Likes Received:
    137
    I don't have all the answers as I'm trying to figure this stuff out myself.

    #1, if you mean what do you hook up, on grbl 1.1, set spindle max speed to 0 and the PWM output pin is toggled on-off rather than PWM. This needs to be fed to a relay driver as the pin doesn't source enough current to directly drive a relay coil - could damage your Arduino. I'd look for a relay module that you can hook to a microcontroller as it will have a built in driver. Tons on ebay - look for "arduino relay board". Be sure to choose a relay that can handle your spindle current draw. Also, match the trigger voltage to your arduino (probably 5V but could be 3.3V).

    #2 this is pretty specific to your spindle, need more details.

    [edit] be sure to check your grbl configuration, there are a number of options that affect this area.
     
    #2 phil from seattle, Aug 31, 2017
    Last edited: Aug 31, 2017

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Accept Learn More...
    Dismiss Notice