Wiki Search Terms

Spindle PWM

Controller Board

ESP-WROOM-32

Machine Description

Gantry router XYYZ Nema 23, TB6600 drivers, HS320 VFD

Input Circuits

Configuration file

name: "ESP32 TB6600 V1"
board: "ESP-WROOM-32"
stepping:
  engine: RMT
  idle_ms: 250
  dirdelayus: 1
  pulse_us: 2
  disabledelayus: 0
axes:
  sharedstepperdisable_pin: gpio.13:high
  x:
    stepspermm: 21
    maxratemmpermin: 2000
    accelerationmmper_sec2: 25
    maxtravelmm: 1000
    homing:
      # Change to 2 when limit switches connected
      cycle: 0
      mpos_mm: 10
      positive_direction: false
    motor0:
      # Change to gpio.34:low:pu when connected
      limitallpin: NO_PIN
      stepstick:
        direction_pin: gpio.14
        step_pin: gpio.12
    motor1:
      null_motor:
  y:
    stepspermm: 26
    maxratemmpermin: 2000
    accelerationmmper_sec2: 25
    maxtravelmm: 1000
    homing:
      # Change to 2 when limit switches connected
      cycle: 0
      mpos_mm: 10
      positive_direction: false
    motor0:
      # Change to gpio.35:low:pu when connected
      limitallpin: NO_PIN
      stepstick:
        direction_pin: gpio.15
        step_pin: gpio.26
    motor1:
      # Change to gpio.35:low:pu when connected
      limitallpin: NO_PIN
      stepstick:
        direction_pin: gpio.21:low
        step_pin: gpio.25
  z:
    stepspermm: 200
    maxratemmpermin: 2000
    accelerationmmper_sec2: 25
    maxtravelmm: 1000
    homing:
      # Change to 1 when limit switches connected
      cycle: 0
      mpos_mm: 10
      positive_direction: true
    motor0:
      # Change to gpio.32:low:pu when connected
      limitallpin: NO_PIN
      stepstick:
        direction_pin: gpio.33
        step_pin: gpio.27
    motor1:
      null_motor:
PWM:
  pwm_hz: 1000
  output_pin: gpio.22
  enablepin: NOPIN
  directionpin: NOPIN
  disablewiths0: false
  s0withdisable: true
  spinup_ms: 0
  spindown_ms: 0
  speed_map: 0=0% 24000=100%
  offonalarm: false
spi:
  miso_pin: gpio.19
  mosi_pin: gpio.23
  sck_pin: gpio.18
sdcard:
  cs_pin: gpio.5
  carddetectpin: NO_PIN
probe:
  pin: gpio.4:low:pu
door:
  pin: NO_PIN

Startup Messages

No errors

User Interface Software

No response

What happened?

In the latest firmware, no PWM signals are output from the pin specified as output_pin when sending spindle commands e.g. M3 S12000. Tried different pins and PWM config to be sure.
Tested by disconnecting PWM to AV module and connecting oscilloscope probe directly to output pin (grounded to board).

Switched to v3.8.3 and the problem disappeared, using the same config. I don’t know in which version the regression was introduced as I haven’t had time to test intermediate releases.

There were no error messages. All commands executed successfully, just no PWM signal output.

GCode File

No response

Other Information

No response