Hi gentle people, I’m new here and after quite a lot of silent research on this forum (which greatly helped me), I’m facing an issue I can’t find anyone who already talked about.
For two days, I’m running Fluidnc on my MKS DLC32 V2.1 to control my modified CNC 3018 (now 3040). Coupled with TMC2209 stepper drivers, I managed to get everything to work smoothly.
Only issue: the spindle automatically turns on at low RPM when booting, and I can’t really turn it off. Well, I can turn it off for about 60s if I set it to high RPM then send M5 to turn off, then it turns on again at low RPM itself.
The spindle is from aliexpress, a cheap 800w coming with a power supply that can be controlled manually with a potentiometer or via the 0-10v.
I connected the 0-10v of the power supply to the spindle pins on the MKS DLC32 board (gpio.32). I first tried the config with PWN, then switched to the 10v one just to see how it goes but same issue in both cases.
Any idea of what I could have done or thought wrong ?
Thank you already if you take the time to read me, any help/advice would be greatly appreciated.
Here’s my config btw :
name: CNC 3040
board: MKS DLC32 V2.1
kinematics:
Cartesian:
uart1:
txd_pin: gpio.18
rxd_pin: gpio.23
rts_pin: NO_PIN
cts_pin: NO_PIN
baud: 115200
mode: 8N1
stepping:
engine: I2S_STATIC
idle_ms: 250
pulse_us: 4
dir_delay_us: 10
disable_delay_us: 0
axes:
shared_stepper_disable_pin: i2so.0
shared_stepper_reset_pin: NO_PIN
x:
steps_per_mm: 800
max_rate_mm_per_min: 2000
acceleration_mm_per_sec2: 30
max_travel_mm: 281
soft_limits: true
homing:
cycle: 1
feed_mm_per_min: 300
seek_mm_per_min: 600
mpos_mm: 0
positive_direction: false
motor0:
limit_all_pin: NO_PIN
limit_neg_pin: gpio.36:low
limit_pos_pin: NO_PIN
hard_limits: true
pulloff_mm: 1.5
tmc_2209:
step_pin: i2so.1
direction_pin: i2so.2
uart_num: 1
y:
steps_per_mm: 800
max_rate_mm_per_min: 3000
acceleration_mm_per_sec2: 30
max_travel_mm: 350
soft_limits: true
homing:
cycle: 1
feed_mm_per_min: 300
seek_mm_per_min: 600
mpos_mm: 0
motor0:
limit_all_pin: NO_PIN
limit_neg_pin: gpio.35:low
limit_pos_pin: NO_PIN
hard_limits: true
pulloff_mm: 2
tmc_2209:
step_pin: i2so.5
direction_pin: i2so.6
uart_num: 1
z:
steps_per_mm: 398
max_rate_mm_per_min: 600
acceleration_mm_per_sec2: 30
max_travel_mm: 75
soft_limits: true
homing:
cycle: 1
feed_mm_per_min: 300
seek_mm_per_min: 600
mpos_mm: 0
motor0:
limit_all_pin: NO_PIN
limit_neg_pin: gpio.34:low
limit_pos_pin: NO_PIN
hard_limits: true
pulloff_mm: 2
tmc_2209:
step_pin: i2so.3
direction_pin: i2so.4
uart_num: 1
run_mode: CoolStep
homing_mode: CoolStep
i2so:
bck_pin: gpio.16
data_pin: gpio.21
ws_pin: gpio.17
spi:
miso_pin: gpio.12
mosi_pin: gpio.13
sck_pin: gpio.14
probe:
pin: gpio.22:low
toolsetter_pin: NO_PIN
check_mode_start: false
sdcard:
cs_pin: gpio.15
card_detect_pin: gpio.39
10V:
forward_pin: gpio.19
reverse_pin: NO_PIN
output_pin: gpio.32
enable_pin: NO_PIN
direction_pin: NO_PIN
disable_with_s0: true
s0_with_disable: true
spinup_ms: 4000
spindown_ms: 4000
speed_map: 0=0.000% 20000=100.000%
off_on_alarm: true
start:
check_limits: true
must_home: true
deactivate_parking: false