Problem: Version 3.6.8 is not working for me #846

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Your limit switches do not have any external pullups, and the internal pullups are not enabled due to no “:pu” attributes on the pins.

Should I keep :high attributes or only add :pu ?

Either is okay. :high is the default, so :pu and :high:pu are the same

Now limits switch LED is working and it’s reporting in $limits but it’s not triggering alarm when pressed, homing is not working too.

http://wiki.fluidnc.com/en/support/help_with_switch_problems

See especially the “Debug Mode” section

Oh wait i also have wrong config file, i’m sending new one with modified switches

name: "ESP32 Dev Controller V4"
board: "ESP32 Dev Controller V4"

stepping:
  engine: RMT
  idle_ms: 250
  dir_delay_us: 1
  pulse_us: 4
  disable_delay_us: 0

axes:
  
  x:
    steps_per_mm: 80
    max_rate_mm_per_min: 8000
    acceleration_mm_per_sec2: 80
    max_travel_mm: 3500
    soft_limits: false
    homing:
      cycle: 1
      allow_single_axis: true
      positive_direction: false
      mpos_mm: 5.000
      feed_mm_per_min: 1000.000
      seek_mm_per_min: 2000.000
      settle_ms: 500
      seek_scaler: 1.100
      feed_scaler: 1.100
    motor0: #X1
      limit_neg_pin: gpio.17:high:pu
      limit_pos_pin: gpio.5:high:pu
      hard_limits: true
      pulloff_mm: 5.000
      standard_stepper:
        step_pin: gpio.32
        direction_pin: gpio.33
        
  y:
    steps_per_mm: 80
    max_rate_mm_per_min: 8000
    acceleration_mm_per_sec2: 80
    max_travel_mm: 3500
    soft_limits: false
    homing:
      cycle: 2
      allow_single_axis: true
      positive_direction: false
      mpos_mm: 5.000
      feed_mm_per_min: 1000.000
      seek_mm_per_min: 2000.000
      settle_ms: 500
      seek_scaler: 1.100
      feed_scaler: 1.100
    motor0: #Y2
      limit_neg_pin: gpio.4:high:pu
      limit_pos_pin: gpio.16:high:pu
      hard_limits: true
      pulloff_mm: 5.000
      standard_stepper:
        step_pin: gpio.25
        direction_pin: gpio.26
    motor1: #Y1
      limit_neg_pin: gpio.15:high:pu
      limit_pos_pin: gpio.2:high:pu
      hard_limits: true
      pulloff_mm: 5.000
      standard_stepper:
        step_pin: gpio.27
        direction_pin: gpio.14:low        

spi:
  miso_pin: gpio.23
  mosi_pin: gpio.22
  sck_pin: gpio.21

sdcard:
  cs_pin: gpio.19
  card_detect_pin: NO_PIN


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

When it hits limit switch when homing and it’s just spamming this

What kind of switches?

Connected to NC

When it hits the switch, try pushing it in manually then releasing it to see what happens

It’s still in Homing mode but motor stop and when I hold switch same thing is spamming

And also Laser is not working, SD Card is not detected

Show a photograph of your system, not a schematic.

Something could be wrong with the wiring to the x switch.

bad ground perhaps?

Did you put RC filters with external pullups on the switches? Until you do that, the signal quality will be so bad that I cannot help you.

Did you put RC filters with external pullups on the switches? Until you do that, the signal quality will be so bad that I cannot help you.

I didn’t yet because i need to get capacitors and resistors to build RC filters. I will make that and will see if it will work then. But it’s strange that will older version it’s working fine. Thanks for help

The older version uses a different method for reading inputs. The old method was very slow and could miss fast transitions.

Software improvements can often reveal hidden hardware problems.

Okay, I will make RC filters first, grounds on switches are okay.

I now tried putting limit switch wires as far away as i could from motor wires and machine homing was succesfull. I will add RC filters and test it then. Thanks for your help

Can I also fix interference with ferrite bead as if would be easier? Or are R/C filters still better then ferrite bead?

Rc is the common solution. You will just have to experiment. I cannot predict exactly what will happen in your setup. There are many aspects of your setup that are hobbyist grade not industrial grade. Despite the fact that were have EE training and experience, we are volunteer software developers, not paid EE consultants or teachers.

Okay,thanks for your help, I managed to get capacitors and resistors and will make RC filters this week and try it, is it okay if I wire all capacitors to one wire and that wire to one ground and same with resistor and then i just wire that wire between each resistor and capacitor to limit switch pin?

I repeat, we are not EE consultants.

You can find good instructions on the net for RC filters.
Important short lines away from the entrance. –> less than 10mm are desired.

I added RC filters and now its working fine, thanks for your help