Thingiverse
Laser Mount for Geeetech A10 - "Hot" swap by Urinator
by Thingiverse
Last crawled date: 4 years, 10 months ago
This is a somewhat universal mount for Lasers and the A10.
I used a cheap 10-pin Molex connector, which is pretty shitty (not many connection-cycles), so i advice to using something more robust.
The thermistor pins are shorted with a 6kOhm resistor to stop failsafes in Marlin/Klipper.
The GT2560 PWMs the Fan by ground, so the +12/+24 rail is not applicable for the laser's PWM input.
This design uses the fact that most PWM inputs have an internal Pull-Up, so it still works, but is inverted. So 255 PWM results in OFF, 0 PWM in ON. Keep that in mind, these lasers are dangerous!
In the black shrinking-tube is a 2A step down for the native 24v to 12v.
The Internal 12v regulator in the GT2560 is not able to deliver > 500mA!
I used a cheap 10-pin Molex connector, which is pretty shitty (not many connection-cycles), so i advice to using something more robust.
The thermistor pins are shorted with a 6kOhm resistor to stop failsafes in Marlin/Klipper.
The GT2560 PWMs the Fan by ground, so the +12/+24 rail is not applicable for the laser's PWM input.
This design uses the fact that most PWM inputs have an internal Pull-Up, so it still works, but is inverted. So 255 PWM results in OFF, 0 PWM in ON. Keep that in mind, these lasers are dangerous!
In the black shrinking-tube is a 2A step down for the native 24v to 12v.
The Internal 12v regulator in the GT2560 is not able to deliver > 500mA!