Table of Contents

List 6: Test Laser PWM Output

⚠️
SAFETY FIRST: Ensure proper multimeter/oscilloscope connections before applying power.
1

Measurement Setup

  • Connect multimeter red probe to GPIO.12 (green terminal)
  • Connect multimeter black probe to GND
  • (Alternative: Use oscilloscope for measurement)
2

Laser PWM Mode Activation

  • Enter command: M6 T2 ↵
  • Switch to Laser PWM mode
3

Laser PWM Output Testing

  • Enter command: M3 S127 ↵
  • Then enter: G1 F1000 ↵
  • Output should change from 0V to 2.5V
  • Enter command: M3 S255 ↵
  • Then enter: G1 F1000 ↵
  • Output should change from 0V to 5V
  • Enter command: M5 ↵ - Output should return to 0V
4

Vmot Laser PWM Output (Optional)

💡 MOSFET ON/OFF measurement
  • Connect red probe to MOSFET Vmot-main (orange terminal)
  • Connect black probe to IO.12-MOS-GND (orange terminal)
  • Enter command: M3 S255 ↵
  • Then enter: G1 F1000 ↵
  • Output: 0V to Vmot-main
  • Enter command: M5 ↵ turn off
  • used to drive Vmot-main voltage loads such as solenoid valves
✅

Expected Results

  • M3 S127 + G1 F1000: Output changes from 0V to 2.5V
  • M3 S255 + G1 F1000: Output changes from 0V to 5V
  • M5: Output returns to 0V
  • Mosfet output ON/OFF correctly with refer commands

Image shows

Coming soon!

Video demonstrations

# Begin Laser 
Laser:
  pwm_hz: 5000
  output_pin: gpio.12
  enable_pin: NO_PIN
  disable_with_s0: false
  s0_with_disable: true
  tool_num: 2
  speed_map: 0=0.000% 255=100.000%
  off_on_alarm: true

This version of the WIKI is still being edited. You can check out previous videos.

Beginner upload firmware set webUI tutorial

The V4.9 plus and V4.8A V4.9A is similar config, different is the v4.9 plus step/dir model onboard driver “MS3 pin” need set in yaml.

// Relay // PWM // Laser // 0~10V // Output Test //

The V4.9 plus and V4.8A V4.9A is similar config, different is the v4.9 plus step/dir model onboard driver “MS3 pin” need set in yaml.

// Connect hardware // Limits // Probe // Motor // Relays

The V4.9 plus and V4.8A V4.9A is similar config, different is the v4.9 plus step/dir model onboard driver “MS3 pin” need set in yaml.