Laser programming

Can't seem to find where I would invert the laser command, mine is on when its supposed to be off, but when a turn on command is sent it turns off. 

  •  I figured it out. You have to go into the Arduino GRBL programming and switch everything for spindle control from 1 to 0 and 0 to 1 then change the spindle range so that it's also opposite. Now anyone can connect a non Jtech laser by jumping the RPM and LZR ports with a resistor (I used a 1K, but will be using a potentiometer to see what the best resistance actually is). Then running your TTL line from LZR to TTL, and 12V and GND are just exactly where you'd expect to connect.

Login or Signup to post a comment