Did I blow my X Axis Driver?

LowRider CNC Troubleshooting
1

Hello, I am building a Lowrider V4 using the parts from V1E. I have built the beam and started testing the wiring. Of course I forgot to label all the wires so spent some time identifying the endstops and motors correctly. At some point the board started exhibiting a reboot loop. I was able to fix this by unplugging the X motor. Right now I am making progress by remapping the X connection to C and updating the config.yaml. So it feels like a bad driver chip or short on the board. It feels like the X problem is causing a power issue. $SS reports that the driver is OK. I am just recording this in case others see a similar issue and to confirm I made the right changes to the config.yaml.

$SS and config.yaml files:

$SS
[MSG:INFO: FluidNC v3.9.9 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:INFO: Machine LowRider]
[MSG:INFO: Board Jackpot3 TMC2226]
[MSG:INFO: UART1 Tx:gpio.16 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 cs_pin:gpio.5 detect:NO_PIN 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: User Digital Output: 2 on Pin:gpio.0]
[MSG:INFO: User Digital Output: 3 on Pin:gpio.2]
[MSG:INFO: Axis count 3]
[MSG:INFO: Axis X (3.000,1223.000)]
[MSG:INFO:   Motor0]
[MSG:INFO:     tmc_2209 UART1 Addr:0 CS:NO_PIN Step:I2SO.2 Dir:I2SO.1 Disable:I2SO.0 R:0.110]
[MSG:INFO:  Neg Limit gpio.25]
[MSG:INFO: Axis Y (3.000,2443.000)]
[MSG:INFO:   Motor0]
[MSG:INFO:     tmc_2209 UART1 Addr:1 CS:NO_PIN Step:I2SO.5 Dir:I2SO.4 Disable:I2SO.7 R:0.110]
[MSG:INFO:  Neg Limit gpio.33]
[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 Z (-147.000,3.000)]
[MSG:INFO:   Motor0]
[MSG:INFO:     tmc_2209 UART1 Addr:2 CS:NO_PIN Step:I2SO.10 Dir:I2SO.9 Disable:I2SO.8 R:0.110]
[MSG:INFO:  Pos Limit gpio.32]
[MSG:INFO:   Motor1]
[MSG:INFO:     tmc_2209 UART1 Addr:3 CS:I2SO.19 Step:I2SO.18 Dir:I2SO.17 Disable:I2SO.16 R:0.110]
[MSG:INFO:  Pos Limit gpio.34]
[MSG:INFO: X Axis driver test passed]
[MSG:INFO: Y Axis driver test passed]
[MSG:INFO: Y2 Axis driver test passed]
[MSG:INFO: Z Axis driver test passed]
[MSG:INFO: Z2 Axis driver test passed]
[MSG:INFO: Kinematic system: Cartesian]
[MSG:INFO: Connecting to STA SSID:TogetherForever]
[MSG:INFO: Connecting.]
[MSG:INFO: Connecting..]
[MSG:INFO: Connected - IP is 192.168.1.70]
[MSG:INFO: WiFi on]
[MSG:INFO: Start mDNS with hostname:http://fluidnc.local/]
[MSG:INFO: HTTP started on port 80]
[MSG:INFO: Telnet started on port 23]
[MSG:INFO: Probe gpio.36:low]
ok

config.yaml for motor0 after change to C:

    motor0:
      limit_neg_pin: gpio.25:high
      limit_pos_pin: NO_PIN
      limit_all_pin: NO_PIN
      hard_limits: false
      pulloff_mm: 4.000
      tmc_2209:
        uart_num: 1
        addr: 3
        cs_pin: 22
        r_sense_ohms: 0.110
        run_amps: 0.800
        homing_amps: 0.800
        hold_amps: 0.700
        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.20
        step_pin: I2SO.21
        disable_pin: I2SO.23

…

The build went well and the instructions and forum posts have been awesome.

Thanks

1 Like
2

Welcome to the forum @StottieCake

I’m not sure whats going on with your X driver, that does seem odd. There are others here that will be much more help with that than I am.

This wont be much help for you now, but hopefully it will help someone else in the future.

If you forget to label your wires on the YZ plates, and you are using a kit from the V1 store and all of the wires for both motors and both endstops coming out of the back of the YZ plate. The 2 motors, the shorter wire is Y and the longer wire is Z. The Endstops, the shorter wire is Z and the longer wire is Y.

1 Like
3

Any chance you were plugging and unplugging while it was powered on when you were trying to figure out what was what?

2 Likes
4

Yes that’s exactly what I did. I should have known better having built 3d printers and laser cutters. This is what happens when you get too excited :wink:

2 Likes
5

It happens for sure. I don’t ever mark them till I am done, but I have built so many I just know which is which. Hopefully if someone else makes the same mistake they will find the post and it will be helpful

6

I don’t know if there is an easy way to protect from that. I will make a note and keep an eye out for anything.

Sorry it happened but luckily you have a spare driver.

1 Like