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General Mach Discussion / Re: Newbie Needs Help With Laser Firing!
« on: August 11, 2013, 06:21:52 AM »
Obviously it depends on your particular laser driver board but usually…
After applying power there is a short delay then the diode laser comes ON.
Connecting the TTL pin to GND turns the laser OFF – removing this connection turns the laser ON (basically an Active High configuration as far as Mach3 is concerned).
You could either use an unused axis Direction pin connected to the TTL input or you could use the GCode M11P1 / M10P1 command set to switch Output #1 (which is in turn mapped to an output pin that is connected to the TTL input). Each method has it’s own advantages and disadvantages but my preference is for using the M11P1 / M10P1 command set.
Tweakie.
After applying power there is a short delay then the diode laser comes ON.
Connecting the TTL pin to GND turns the laser OFF – removing this connection turns the laser ON (basically an Active High configuration as far as Mach3 is concerned).
You could either use an unused axis Direction pin connected to the TTL input or you could use the GCode M11P1 / M10P1 command set to switch Output #1 (which is in turn mapped to an output pin that is connected to the TTL input). Each method has it’s own advantages and disadvantages but my preference is for using the M11P1 / M10P1 command set.
Tweakie.