Yet another BLtouch cry for help haha. Duex5 Pwm1 Nothing…

  • Hello! Here's my obligitory "New member who has a pressing issue" post!

    I have fumbled through most of my firmware setup, however I just cannot get my BLtouch to do ANYTHING beyond the startup cycle. When I apply power, it does it's blinky check routine. I cannot get any response through the gcode terminal.
    I am using the PWM1 servo plug on my Duex5. I have the H2 disabled, and everything references H2 for signal. I have tried value and H3 as well. At one time I tried PWM2, but I'm unsure if I had any other settings correct. My wiring will not allow me to reach any other servo ports.

    I've read as much as I can bear to. Here's what I've done.
    Cut the LOGIC trace on my AUTHENTIC Smart BLtouch
    Verified the wiring is correct (multiple times).
    Verified I have no broken wires
    Checked voltage at the sensor is 5v (4.92 actually)
    I have set up deployprobe and retractprobe, both without inversion

    I think there is something I'm blatantly missing.
    Here's my config…

    ; Configuration file for Duet WiFi (firmware version 1.20 or newer)
    ; executed by the firmware on start-up
    ; generated by RepRapFirmware Configuration Tool on Wed Mar 28 2018 10:37:18 GMT-0400 (Eastern Daylight Time)

    ; General preferences
    G90 ; Send absolute coordinates…
    M83 ; ...but relative extruder moves
    M555 P1 ; Set firmware compatibility to look like RepRapFirmare

    M667 S1 ; Select CoreXY mode
    M564 H0 ; shut off homing
    ; Network
    M550 PX5s ; Set machine name
    M552 S1 ; Enable network
    ;*** Access point is configured manually via M587
    M586 P0 S1 ; Enable HTTP
    M586 P1 S0 ; Disable FTP
    M586 P2 S0 ; Disable Telnet

    ; Drives
    M569 P0 S1 ; Drive 0 X goes forwards
    M569 P1 S1 ; Drive 1 Y goes forwards
    M569 P2 S0 ; Drive 2 Z and W goes Backwards
    M569 P3 S0 ; Drive 3 E0 goes Backwards
    M569 P7 S0 ; Drive 7 goes Backwards
    M569 P6 S0 ; Drive 6 goes Backwards
    M915 P0:1:2:6:7 S2 R0 F0 ; set Selected drives to enable stall detection sensitivity 2, do nothing when stall, unfiltered
    M584 X0 Y1 Z7:6:2 U7 V6 W2 P6 E3 ; three Z motors connected to driver outputs 2 becomes left screw, 6 becomes Rear screw and 7 becomes Right screw. P is how many show up on webpage
    M350 X16 Y16 Z16 E16 U16 V16 W16 I1 ; Configure microstepping with interpolation
    M92 X80 Y80 Z400 U400 V400 W400 E527 ; Set steps per mm
    M566 X300 Y300 Z12 U300 V300 W300 E120 ; Set maximum instantaneous speed changes (mm/min)
    M203 X102000 Y102000 Z5000 E4000 U10200 V10200 W10200 ; Set maximum speeds (mm/min)
    M201 X1000 Y1000 Z250 E250 U1000 V1000 W1000 ; Set accelerations (mm/s^2)
    M906 X1300 Y1300 Z800 E800 U1000 V1000 W1000 I30 ; Set motor currents (mA) and motor idle factor in per cent
    M84 S30 ; Set idle timeout

    ; Axis Limits
    M208 X0 Y0 Z0 U0 V0 W0 S1 ; Set axis minima
    M208 X380 Y370 Z390 U410 V410 W410 S0 ; Set axis maxima (Each Z screw (U V A) has more max travel than the Z to allow room for sensorless homing)
    ; Endstops
    M574 X3 Y3 U3 V3 W3 S3 ; Set endstops controlled by motor load detection
    M574 Z2 ; Set Z endstop

    ; Z-Probe
    M574 Z2 S2 ; Set endstops controlled by probe
    M558 P9 X0 Y0 Z1 H2 F100 T2000 ; Set Z Probe to type Switch or Digital output where Z probe connector is used. Used for z only.
    G31 P50 X-30 Y0 Z1.5 ; Set Z probe trigger value, offset and trigger height
    M557 X15:365 Y15:335 S20 ; Define mesh grid

    ; Heaters
    M301 H0 S1.00 P10 I0.1 D200 T0.4 W180 B30 ; Use PID on bed heater (may require further tuning)
    M305 P0 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 0
    M143 H0 S120 ; Set temperature limit for heater 0 to 120C
    M305 P1 T100000 B4138 C0 R4700 ; Set thermistor + ADC parameters for heater 1
    M143 H1 S300 ; Set temperature limit for heater 1 to 300C
    M307 H2 A-1 C-1 D-1 ; Disable Heater2 for BLTouch

    ; Fans
    M106 P0 S1 I0 F500 H-1 ; Set fan 0 value, PWM signal inversion and frequency. Thermostatic control is turned off
    M106 P1 S1 I0 F200 H1 ; Set fan 1 value, PWM signal inversion and frequency. Thermostatic control is turned on
    M106 P2 S1 I0 F800 H1 T30 ; Set fan 2 value, PWM signal inversion and frequency. Thermostatic control is turned on

    ; Tools
    M563 P0 D0 H1 ; Define tool 0
    G10 P0 X0 Y0 Z0 ; Set tool 0 axis offsets
    G10 P0 R0 S0 ; Set initial tool 0 active and standby temperatures to 0C

    ; Automatic power saving
    M911 S10 R11 P"M913 X0 Y0 G91 M83 G1 Z3 E-5 F1000" ; Set voltage thresholds and actions to run on power loss

    ; Custom settings are not configured

    Many thanks to anyone who offers their time to help me out!

  • OMG. Sometimes going to lunch and having a beer fixes all of the problems.

    I just realized that all of the pictures i've been looking at, the board is in the oppisite orientation. I had my wiring backwards. It was backwards every time I checked it.

    Goes to show you that sometimes you just need to retrace all of your steps, sometimes with fresh eyes.

  • You're not alone. I've had to hold a print out if the wiring diagram up to the board a couple times to get my head around which pin is which.


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