On to the second problem we are having. Next to the homing problem.
We would like to control the laser through the Marlin board. It seems the easiest way, and how it’s explained, is through the firmware edit to change Pin 9 to 44 for the fan control, and then connect the 2 pins to the laser.
Now, if we change this in the firmware, compile it, and upload it. The measured voltage is ±0.05V. It’s the AUX2 part on the ramp board, left up ground, second from the bottom right should be 44 when we follow the guide.
The part I’ve changed in the firmware is pins_RAMPS.h #define RAMPS_D9_PIN 9 to #define RAMPS_D9_PIN 44, but nothing.
When changing the fan status and power through Repetier, of M116 S### M117, didn’t make a change.
All help appreciated.