[FluidNC Issue#1522] Problem: work stop with [MSG:WARN:: Low memory: 14200 bytes] message About GRBL HAL

Issue #1522 | 状态: 已关闭 | 作者: ninnux | 创建时间: 2025-07-07

Wiki Search Terms

memory, Low memory, etc

Controller Board

jackpot from v1Engineering

Machine Description

motor drivers are TMC2209

Input Circuits

Configuration file

board: Jackpot TMC2209
name: MPCNC
meta: 03-15-2024 RyanZ
planner_blocks: 32
stepping:
  engine: I2S_STATIC
  idle_ms: 255
  pulse_us: 2
  dirdelayus: 1
  disabledelayus: 0
uart1:
  txd_pin: gpio.0
  rxd_pin: gpio.4
  rtspin: NOPIN
  baud: 115200
  mode: 8N1
axes:
  sharedstepperdisablepin: NOPIN
  x:
    stepspermm: 50.000
    maxratemmpermin: 9000.000
    accelerationmmper_sec2: 200.000
    maxtravelmm: 1220
    soft_limits: false
    homing:
      cycle: 1
      positive_direction: false
      mpos_mm: 3
      feedmmper_min: 300.000
      seekmmper_min: 1500.000
      settle_ms: 500
      seek_scaler: 1.100
      feed_scaler: 1.100
    #X
    motor0:
      limitnegpin: gpio.25:high
      limitpospin: NO_PIN
      limitallpin: NO_PIN
      hard_limits: false
      pulloff_mm: 4.000
      tmc_2209:
        uart_num: 1
        addr: 0
        cspin: NOPIN
        rsenseohms: 0.110
        run_amps: 0.800
        homing_amps: 0.800
        hold_amps: 0.500
        microsteps: 8
        stallguard: 0
        stallguard_debug: false
        toff_disable: 0
        toff_stealthchop: 5
        toff_coolstep: 3
        run_mode: StealthChop
        homing_mode: StealthChop
        use_enable: false
        direction_pin: I2SO.1
        step_pin: I2SO.2
        disable_pin: I2SO.0
    #A
    motor1:
      limitnegpin: gpio.35:high
      limitpospin: NO_PIN
      limitallpin: NO_PIN
      hard_limits: false
      pulloff_mm: 4.000
      tmc_2209:
        uart_num: 1
        addr: 3
        cs_pin: i2so.14
        rsenseohms: 0.110
        run_amps: 0.800
        homing_amps: 0.800
        hold_amps: 0.500
        microsteps: 8
        stallguard: 0
        stallguard_debug: false
        toff_disable: 0
        toff_stealthchop: 5
        toff_coolstep: 3
        run_mode: StealthChop
        homing_mode: StealthChop
        use_enable: false
        step_pin: I2SO.13
        direction_pin: I2SO.12
        disable_pin: I2SO.15
  y:
    stepspermm: 50.000
    maxratemmpermin: 9000.000
    accelerationmmper_sec2: 200.000
    maxtravelmm: 2440
    soft_limits: false
    homing:
      cycle: 2
      positive_direction: false
      mpos_mm: 3
      feedmmper_min: 300.000
      seekmmper_min: 1500.000
      settle_ms: 500
      seek_scaler: 1.100
      feed_scaler: 1.100
    #Y
    motor0:
      limitnegpin: gpio.33:high
      limitpospin: NO_PIN
      limitallpin: NO_PIN
      hard_limits: false
      pulloff_mm: 4.000
      tmc_2209:
        uart_num: 1
        addr: 1
        cspin: NOPIN
        rsenseohms: 0.110
        run_amps: 0.800
        homing_amps: 0.800
        hold_amps: 0.500
        microsteps: 8
        stallguard: 0
        stallguard_debug: false
        toff_disable: 0
        toff_stealthchop: 5
        toff_coolstep: 3
        run_mode: StealthChop
        homing_mode: StealthChop
        use_enable: false
        step_pin: I2SO.5
        direction_pin: I2SO.4
        disable_pin: I2SO.7
    #B
    motor1:
      limitnegpin: gpio.34:high
      limitpospin: NO_PIN
      limitallpin: NO_PIN
      hard_limits: false
      pulloff_mm: 4.000
      tmc_2209:
        uart_num: 1
        addr: 3
        cs_pin: i2so.19
        rsenseohms: 0.110
        run_amps: 0.800
        homing_amps: 0.800
        hold_amps: 0.500
        microsteps: 8
        stallguard: 0
        stallguard_debug: false
        toff_disable: 0
        toff_stealthchop: 5
        toff_coolstep: 3
        run_mode: StealthChop
        homing_mode: StealthChop
        use_enable: false
        step_pin: I2SO.18
        direction_pin: I2SO.17
        disable_pin: I2SO.16
  z:
    stepspermm: 200.000
    maxratemmpermin: 1200.000
    accelerationmmper_sec2: 80.000
    maxtravelmm: 300.000
    soft_limits: false
    homing:
      cycle: 0
      positive_direction: true
      mpos_mm: 200.000
      feedmmper_min: 300.000
      seekmmper_min: 800.000
      settle_ms: 500
      seek_scaler: 1.100
      feed_scaler: 1.100
    motor0:
      limitnegpin: gpio.32:low
      limitpospin: NO_PIN
      limitallpin: NO_PIN
      hard_limits: false
      pulloff_mm: 4.000
      tmc_2209:
        uart_num: 1
        addr: 2
        cspin: NOPIN
        rsenseohms: 0.110
        run_amps: 0.800
        homing_amps: 0.800
        hold_amps: 0.500
        microsteps: 8
        stallguard: 0
        stallguard_debug: false
        toff_disable: 0
        toff_stealthchop: 5
        toff_coolstep: 3
        run_mode: StealthChop
        homing_mode: StealthChop
        use_enable: false
        step_pin: I2SO.10
        direction_pin: I2SO.9
        disable_pin: I2SO.8
 c:
   stepspermm: 80.000
   maxratemmpermin: 5000.000
   accelerationmmper_sec2: 100.000
   maxtravelmm: 300.000
   soft_limits: false
   homing:
     cycle: 1
     positive_direction: true
     mpos_mm: 150.000
     feedmmper_min: 100.000
     seekmmper_min: 800.000
     settle_ms: 500
     seek_scaler: 1.100
     feed_scaler: 1.100
#
   motor0:
     limitnegpin: gpio.39:low
     limitpospin: NO_PIN
     limitallpin: NO_PIN
     hard_limits: false
     pulloff_mm: 3.000
     tmc_2209:
       uart_num: 1
       addr: 3
       cs_pin: i2so.22
       rsenseohms: 0.110
       run_amps: 0.800
       homing_amps: 0.800
       hold_amps: 0.500
       microsteps: 16
       stallguard: 0
       stallguard_debug: false
       toff_disable: 0
       toff_stealthchop: 5
       toff_coolstep: 3
       run_mode: StealthChop
       homing_mode: StealthChop
       use_enable: false
       step_pin: I2SO.21
       direction_pin: I2SO.20
       disable_pin: I2SO.23
i2so:
  bck_pin: gpio.22
  data_pin: gpio.21
  ws_pin: gpio.17
spi:
  miso_pin: gpio.19
  mosi_pin: gpio.23
  sck_pin: gpio.18
sdcard:
  cs_pin: gpio.5
  carddetectpin: NO_PIN
  frequency_hz: 20000000
probe:
  pin: gpio.36:low
  toolsetterpin: NOPIN
  checkmodestart: true
start:
  must_home: false
coolant:
  flood_pin: gpio.2
  mist_pin: gpio.16
  delay_ms: 0
control:
  safetydoorpin: NO_PIN
  resetpin: NOPIN
  feedholdpin: NO_PIN
  cyclestartpin: NO_PIN
  macro0pin: NOPIN
  macro1pin: NOPIN
  macro2pin: NOPIN
  macro3pin: NOPIN
macros:
  startup_line0:
  startup_line1:
  macro0:
  macro1:
  macro2:
  macro3:
user_outputs:
  analog0pin: NOPIN
  analog1pin: NOPIN
  analog2pin: NOPIN
  analog3pin: NOPIN
  analog0_hz: 5000
  analog1_hz: 5000
  analog2_hz: 5000
  analog3_hz: 5000
  digital0_pin: gpio.26
  digital1_pin: gpio.27
  digital2pin: NOPIN
  digital3pin: NOPIN
#Laser:
 pwm_hz: 5000
 output_pin: gpio.27
 enablepin: NOPIN
 disablewiths0: false
 s0withdisable: true
 tool_num: 0
 speed_map: 0=0.000% 255=100.000%
 offonalarm: true
pwm:
 pwm_hz: 5000
 direction_pin: gpio.26
 output_pin: gpio.27
 enablepin: NOPIN
 disablewiths0: false
 s0withdisable: true
 spinup_ms: 0
 spindown_ms: 0
 tool_num: 0
 speed_map: 0=0.000% 1000=100.000%
 offonalarm: false
5V out gpio.26/27
VMot out gpoi.2/16
In's left to right gpoi.25/33/32/35/34/39/36

Startup Messages

$G
[MSG:DBG: /macrocfg.json not found]
[MSG:DBG: 404.htm not found]
$SS
[MSG:INFO: FluidNC v3.9.7 https://github.com/bdring/FluidNC]
[MSG:INFO: Compiled with ESP32 SDK:v4.4.7-dirty]
[MSG:INFO: Local filesystem type is littlefs]
[MSG:INFO: Configuration file:config.yaml]
[MSG:DBG: Running after-parse tasks]
[MSG:DBG: Checking configuration]
[MSG:INFO: Machine MPCNC]
[MSG:INFO: Board Jackpot TMC2209]
[MSG:INFO: UART1 Tx:gpio.0 Rx:gpio.4 RTS:NO_PIN Baud:115200]
[MSG:INFO: I2SO BCK:gpio.22 WS:gpio.17 DATA:gpio.21Min Pulse:2us]
[MSG:INFO: SPI SCK:gpio.18 MOSI:gpio.23 MISO:gpio.19]
[MSG:INFO: SD Card cspin:gpio.5 detect:NOPIN freq:20000000]
[MSG:INFO: Stepping:I2S_STATIC Pulse:2us Dsbl Delay:0us Dir Delay:1us Idle Delay:255ms]
[MSG:INFO: User Digital Output: 0 on Pin:gpio.26]
[MSG:INFO: User Digital Output: 1 on Pin:gpio.27]
[MSG:INFO: Axis count 3]
[MSG:INFO: Axis X (3.000,1223.000)]
[MSG:INFO:   Motor0]
[MSG:DBG: TMCStepper Library Ver. 0x703]
[MSG:INFO:     tmc2209 UART1 Addr:0 CS:NOPIN Step:I2SO.2 Dir:I2SO.1 Disable:I2SO.0 R:0.110]
[MSG:INFO:  Neg Limit gpio.25]
[MSG:INFO:   Motor1]
[MSG:INFO:     tmc_2209 UART1 Addr:3 CS:I2SO.14 Step:I2SO.13 Dir:I2SO.12 Disable:I2SO.15 R:0.110]
[MSG:INFO:  Neg Limit gpio.35]
[MSG:INFO: Axis Y (3.000,2443.000)]
[MSG:INFO:   Motor0]
[MSG:INFO:     tmc2209 UART1 Addr:1 CS:NOPIN Step:I2SO.5 Dir:I2SO.4 Disable:I2SO.7 R:0.110]
[MSG:INFO:  Neg Limit gpio.33]
$J=G91 G21 F1000 X100
$J=G91 G21 F1000 X100
$J=G91 G21 F1000 X100
$J=G91 G21 F1000 Y-100
$J=G91 G21 F1000 X-10
$J=G91 G21 F1000 X-10
$J=G91 G21 F1000 X-10
$J=G91 G21 F1000 X-10
$J=G91 G21 F1000 X-10
$SD/Run=/foil_holder.gcode

ok
[MSG:WARN:: Low memory: 14200 bytes]
[MSG:WARN:: Low memory: 12096 bytes]
[MSG:WARN:: Low memory: 8808 bytes]

User Interface Software

WebUI

What happened?

work start and in a random point it stop and report low memory issue on the terminal
I tried to disable dhcp in sta mode and set to 0 status report interval and the auto-report interval, it helped with crown sample file but not for that real useful gcode.

GCode File

G1 F600
G92 X0 Y0 Z10.000

(Exported by FreeCAD)
(Post Processor: grbl_post)
(Output Time:2025-07-06 15:33:39.791591)
(Begin preamble)
G17 G90
G21
(Begin operation: Fixture)
(Path: Fixture)
G54
(Finish operation: Fixture)
(Begin operation: TC: Default Tool)
(Path: TC: Default Tool)
(TC: Default Tool)
(Begin toolchange)
( M6 T1 )
(Finish operation: TC: Default Tool)
(Begin operation: Profile)
(Path: Profile)
(Profile)
(Compensated Tool Path. Diameter: 5.0)
G0 Z15.000
G0 X-51.546 Y111.374
G0 Z13.000
G1 X-51.546 Y111.374 Z10.000
G1 X1.990 Y41.020 Z10.000
G2 X2.500 Y39.506 Z10.000 I-1.990 J-1.514 K0.000
G1 X2.500 Y0.000 Z10.000
G2 X-0.000 Y-2.500 Z10.000 I-2.500 J0.000 K0.000
G1 X-304.618 Y-2.500 Z10.000
G2 X-306.728 Y-1.341 Z10.000 I-0.000 J2.500 K0.000
G1 X-402.110 Y148.659 Z10.000
G2 X-400.000 Y152.500 Z10.000 I2.110 J1.341 K0.000
G1 X-389.073 Y152.500 Z10.000
G2 X-387.083 Y151.512 Z10.000 I-0.000 J-2.500 K0.000
G3 X-347.814 Y102.302 Z10.000 I900.701 J678.465 K0.000
G3 X-318.358 Y69.336 Z10.000 I527.591 J441.772 K0.000
G3 X-304.246 Y55.384 Z10.000 I239.085 J227.708 K0.000
G3 X-294.563 Y47.133 Z10.000 I92.415 J98.658 K0.000
G3 X-288.735 Y43.296 Z10.000 I25.681 J32.663 K0.000
G3 X-286.084 Y42.315 Z10.000 I4.290 J7.513 K0.000
G3 X-286.030 Y43.218 Z10.000 I-2.713 J0.617 K0.000
G3 X-286.875 Y47.205 Z10.000 I-21.368 J-2.447 K0.000
G3 X-291.249 Y57.717 Z10.000 I-84.360 J-28.938 K0.000
G3 X-301.268 Y75.955 Z10.000 I-256.840 J-129.215 K0.000
G3 X-318.402 Y102.836 Z10.000 I-546.490 J-329.423 K0.000
G3 X-351.074 Y148.500 Z10.000 I-881.579 J-596.240 K0.000
G2 X-349.073 Y152.500 Z10.000 I2.000 J1.500 K0.000
G1 X-339.073 Y152.500 Z10.000
G2 X-337.083 Y151.512 Z10.000 I-0.000 J-2.500 K0.000
G3 X-297.814 Y102.302 Z10.000 I900.701 J678.465 K0.000
G3 X-268.358 Y69.336 Z10.000 I527.591 J441.771 K0.000
G3 X-254.246 Y55.384 Z10.000 I239.085 J227.708 K0.000
G3 X-244.563 Y47.133 Z10.000 I92.415 J98.658 K0.000
G3 X-238.735 Y43.296 Z10.000 I25.681 J32.663 K0.000
G3 X-236.084 Y42.315 Z10.000 I4.290 J7.513 K0.000
G3 X-236.030 Y43.218 Z10.000 I-2.713 J0.617 K0.000
G3 X-236.875 Y47.205 Z10.000 I-21.368 J-2.447 K0.000
G3 X-241.249 Y57.717 Z10.000 I-84.360 J-28.938 K0.000
G3 X-251.268 Y75.955 Z10.000 I-256.840 J-129.215 K0.000
G3 X-268.402 Y102.836 Z10.000 I-546.490 J-329.423 K0.000
G3 X-301.074 Y148.500 Z10.000 I-881.579 J-596.240 K0.000
G2 X-299.073 Y152.500 Z10.000 I2.000 J1.500 K0.000
G1 X-289.073 Y152.500 Z10.000
G2 X-287.083 Y151.512 Z10.000 I-0.000 J-2.500 K0.000
G3 X-247.814 Y102.302 Z10.000 I900.702 J678.465 K0.000
G3 X-218.358 Y69.336 Z10.000 I527.591 J441.772 K0.000
G3 X-204.246 Y55.384 Z10.000 I239.085 J227.708 K0.000
G3 X-194.563 Y47.133 Z10.000 I92.415 J98.658 K0.000
G3 X-188.735 Y43.296 Z10.000 I25.681 J32.663 K0.000
G3 X-186.084 Y42.315 Z10.000 I4.290 J7.513 K0.000
G3 X-186.030 Y43.218 Z10.000 I-2.713 J0.617 K0.000
G3 X-186.875 Y47.205 Z10.000 I-21.368 J-2.447 K0.000
G3 X-191.249 Y57.717 Z10.000 I-84.360 J-28.938 K0.000
G3 X-201.268 Y75.955 Z10.000 I-256.840 J-129.215 K0.000
G3 X-218.402 Y102.836 Z10.000 I-546.490 J-329.423 K0.000
G3 X-251.074 Y148.500 Z10.000 I-881.580 J-596.240 K0.000
G2 X-249.073 Y152.500 Z10.000 I2.000 J1.500 K0.000
G1 X-237.989 Y152.500 Z10.000
G2 X-235.985 Y151.495 Z10.000 I0.000 J-2.500 K0.000
G3 X-197.151 Y101.972 Z10.000 I905.677 J670.214 K0.000
G3 X-168.011 Y68.799 Z10.000 I529.803 J436.016 K0.000
G3 X-154.046 Y54.761 Z10.000 I239.918 J224.690 K0.000
G3 X-144.458 Y46.457 Z10.000 I92.674 J97.308 K0.000
G3 X-138.684 Y42.591 Z10.000 I25.740 J32.202 K0.000
G3 X-136.066 Y41.599 Z10.000 I4.309 J7.420 K0.000
G3 X-136.005 Y42.516 Z10.000 I-2.890 J0.654 K0.000
G3 X-136.824 Y46.529 Z10.000 I-21.568 J-2.316 K0.000
G3 X-141.129 Y57.111 Z10.000 I-85.111 J-28.453 K0.000
G3 X-151.019 Y75.475 Z10.000 I-259.047 J-127.667 K0.000
G3 X-167.953 Y102.543 Z10.000 I-550.856 J-325.784 K0.000
G3 X-200.261 Y148.517 Z10.000 I-887.717 J-589.492 K0.000
G2 X-198.248 Y152.500 Z10.000 I2.013 J1.483 K0.000
G1 X-187.989 Y152.500 Z10.000
G2 X-185.985 Y151.495 Z10.000 I0.000 J-2.500 K0.000
G3 X-147.151 Y101.972 Z10.000 I905.677 J670.214 K0.000
G3 X-118.011 Y68.799 Z10.000 I529.803 J436.016 K0.000
G3 X-104.046 Y54.761 Z10.000 I239.918 J224.690 K0.000
G3 X-94.458 Y46.457 Z10.000 I92.674 J97.308 K0.000
G3 X-88.684 Y42.591 Z10.000 I25.740 J32.202 K0.000
G3 X-86.066 Y41.599 Z10.000 I4.309 J7.420 K0.000
G3 X-86.005 Y42.516 Z10.000 I-2.890 J0.654 K0.000
G3 X-86.824 Y46.529 Z10.000 I-21.568 J-2.316 K0.000
G3 X-91.129 Y57.111 Z10.000 I-85.111 J-28.453 K0.000
G3 X-101.019 Y75.475 Z10.000 I-259.048 J-127.667 K0.000
G3 X-117.953 Y102.543 Z10.000 I-550.856 J-325.784 K0.000
G3 X-150.261 Y148.517 Z10.000 I-887.717 J-589.492 K0.000
G2 X-148.248 Y152.500 Z10.000 I2.013 J1.483 K0.000
G1 X-137.989 Y152.500 Z10.000
G2 X-135.985 Y151.495 Z10.000 I0.000 J-2.500 K0.000
G3 X-97.151 Y101.972 Z10.000 I905.677 J670.214 K0.000
G3 X-68.011 Y68.799 Z10.000 I529.803 J436.016 K0.000
G3 X-54.046 Y54.761 Z10.000 I239.918 J224.690 K0.000
G3 X-44.458 Y46.457 Z10.000 I92.674 J97.308 K0.000
G3 X-38.684 Y42.591 Z10.000 I25.740 J32.202 K0.000
G3 X-36.066 Y41.599 Z10.000 I4.309 J7.420 K0.000
G3 X-36.005 Y42.516 Z10.000 I-2.890 J0.654 K0.000
G3 X-36.824 Y46.529 Z10.000 I-21.568 J-2.316 K0.000
G3 X-41.129 Y57.111 Z10.000 I-85.111 J-28.453 K0.000
G3 X-51.019 Y75.475 Z10.000 I-259.047 J-127.667 K0.000
G3 X-67.953 Y102.543 Z10.000 I-550.856 J-325.784 K0.000
G3 X-100.261 Y148.517 Z10.000 I-887.717 J-589.492 K0.000
G2 X-98.113 Y152.496 Z10.000 I2.013 J1.483 K0.000
G1 X-83.338 Y151.700 Z10.000
G2 X-81.483 Y150.717 Z10.000 I-0.135 J-2.496 K0.000
G1 X-51.546 Y111.374 Z10.000
G1 X-51.546 Y111.374 Z8.000
G1 X1.990 Y41.020 Z8.000
G2 X2.500 Y39.506 Z8.000 I-1.990 J-1.514 K0.000
G1 X2.500 Y0.000 Z8.000
G2 X-0.000 Y-2.500 Z8.000 I-2.500 J0.000 K0.000
G1 X-304.618 Y-2.500 Z8.000
G2 X-306.728 Y-1.341 Z8.000 I-0.000 J2.500 K0.000
G1 X-402.110 Y148.659 Z8.000
G2 X-400.000 Y152.500 Z8.000 I2.110 J1.341 K0.000
G1 X-389.073 Y152.500 Z8.000
G2 X-387.083 Y151.512 Z8.000 I-0.000 J-2.500 K0.000
G3 X-347.814 Y102.302 Z8.000 I900.701 J678.465 K0.000
G3 X-318.358 Y69.336 Z8.000 I527.591 J441.772 K0.000
G3 X-304.246 Y55.384 Z8.000 I239.085 J227.708 K0.000
G3 X-294.563 Y47.133 Z8.000 I92.415 J98.658 K0.000
G3 X-288.735 Y43.296 Z8.000 I25.681 J32.663 K0.000
G3 X-286.084 Y42.315 Z8.000 I4.290 J7.513 K0.000
G3 X-286.030 Y43.218 Z8.000 I-2.713 J0.617 K0.000
G3 X-286.875 Y47.205 Z8.000 I-21.368 J-2.447 K0.000
G3 X-291.249 Y57.717 Z8.000 I-84.360 J-28.938 K0.000
G3 X-301.268 Y75.955 Z8.000 I-256.840 J-129.215 K0.000
G3 X-318.402 Y102.836 Z8.000 I-546.490 J-329.423 K0.000
G3 X-351.074 Y148.500 Z8.000 I-881.579 J-596.240 K0.000
G2 X-349.073 Y152.500 Z8.000 I2.000 J1.500 K0.000
G1 X-339.073 Y152.500 Z8.000
G2 X-337.083 Y151.512 Z8.000 I-0.000 J-2.500 K0.000
G3 X-297.814 Y102.302 Z8.000 I900.701 J678.465 K0.000
G3 X-268.358 Y69.336 Z8.000 I527.591 J441.771 K0.000
G3 X-254.246 Y55.384 Z8.000 I239.085 J227.708 K0.000
G3 X-244.563 Y47.133 Z8.000 I92.415 J98.658 K0.000
G3 X-238.735 Y43.296 Z8.000 I25.681 J32.663 K0.000
G3 X-236.084 Y42.315 Z8.000 I4.290 J7.513 K0.000
G3 X-236.030 Y43.218 Z8.000 I-2.713 J0.617 K0.000
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G1 X-51.546 Y111.374 Z1.000
G0 Z15.000
G0 Z15.000
(Finish operation: Profile)
(Begin postamble)
M5
G17 G90
M2

Other Information

I have a dev kit with 4MB and not psram.
This one: https://www.amazon.it/dp/B0DKF9NCN1?ref=ppxyo2ovdtbfedasintitle

#1 – bdring 于 2025-07-07

You say you are using the WebUI, but I don’t see any startup messages related to the wifi.

Can you send $I and paste the response?

If you are using AP mode that could explain the problem. AP mode should only be used for set up.

http://wiki.fluidnc.com/en/features/wifi_bt#wifi-ap-mode

#2 – ninnux 于 2025-07-07

I tried to use STA-AP, STA only and last time I tried AP only, so no wifi details in my logs.
Do you suggest to use STA mode only and retry?

#3 – bdring 于 2025-07-07

Sta only when running gcode

#4 – MitchBradley 于 2025-07-07

What is the cluster size on your SD CARD? Search the web for “determine sdcard cluster size” to find out.

When you access the SD Card, the ESP32 system code must allocate RAM in multiples of the cluster size, so using SD necessarily consumes substantial amounts of memory. FluidNC tries very hard to use as little as possible, but there is only so much that we can do.

Smaller SD cards often use smaller cluster sizes, reducing the RAM needs. It is often possible to reformat a large card using a smaller cluster size, or repartition it so you use only a portion of the total space, allowing smaller cluster sizes.

#5 – ninnux 于 2025-07-08

Hi, yesterday evening I restarted from scratch and using STA only It seems to work without low memory issue.
I will check the sdcluser size and i will give you a feedback.
Thank you

#6 – bdring 于 2025-07-08

AP mode is unpredictable. At any time some local devices could be pinging away to get the SSID or other info.

原始Issue: https://github.com/bdring/FluidNC/issues/1522

Wiki Search Terms

Controller Board

Machine Description

Input Circuits

Configuration file

c:

stepspermm: 80.000

maxratemmpermin: 5000.000

accelerationmmper_sec2: 100.000

maxtravelmm: 300.000

soft_limits: false

homing:

cycle: 1

positive_direction: true

mpos_mm: 150.000

feedmmper_min: 100.000

seekmmper_min: 800.000

settle_ms: 500

seek_scaler: 1.100

feed_scaler: 1.100

motor0:

limitnegpin: gpio.39:low

limitpospin: NO_PIN

limitallpin: NO_PIN

hard_limits: false

pulloff_mm: 3.000

tmc_2209:

uart_num: 1

addr: 3

cs_pin: i2so.22

rsenseohms: 0.110

run_amps: 0.800

homing_amps: 0.800

hold_amps: 0.500

microsteps: 16

stallguard: 0

stallguard_debug: false

toff_disable: 0

toff_stealthchop: 5

toff_coolstep: 3

run_mode: StealthChop

homing_mode: StealthChop

use_enable: false

step_pin: I2SO.21

direction_pin: I2SO.20

disable_pin: I2SO.23

pwm_hz: 5000

output_pin: gpio.27

enablepin: NOPIN

disablewiths0: false

s0withdisable: true

tool_num: 0

speed_map: 0=0.000% 255=100.000%

offonalarm: true

pwm:

pwm_hz: 5000

direction_pin: gpio.26

output_pin: gpio.27

enablepin: NOPIN

disablewiths0: false

s0withdisable: true

spinup_ms: 0

spindown_ms: 0

tool_num: 0

speed_map: 0=0.000% 1000=100.000%

offonalarm: false

5V out gpio.26/27

VMot out gpoi.2/16

In's left to right gpoi.25/33/32/35/34/39/36

Startup Messages

User Interface Software

What happened?

GCode File

Other Information

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