bltouch not responding to commands

dakingofhearts2003

bl touch deploys only during power up. Does not respond to any gcode commands. I am using a duet wifi connected through the header on the board. The machine is a tevo tornado, I have included all the necessary files for trouble shooting. Thanks for your help. retractprobe.g homez.g homeall.g deployprobe.g config.g bed.g

Veti

the bltouch extension wiring it notoriously bad.

post a picture of the wiring showing the connections on the duet

Veti

M308 S0 P"bedtemp" Y"thermistor" T100000 B4138 ; configure sensor 0 as thermistor on pin bedtemp
M308 S1 P"e0temp" Y"thermistor" T100000 B4138 ; configure sensor 1 as thermistor on pin e0temp

your thermistor settings are wrong. look of the correct beta value in your thermistor datasheet

dakingofhearts2003

@Veti This is from a previous config before the bl touch will it work ?

M305 P0 T100000 B4092 R2200 ; set thermistor + ADC parameters for heater 0
M143 H0 S150 ; set temperature limit for heater 0 to 150C
M305 P1 T100000 B4092 R2200 ; set thermistor + ADC parameters for heater 1
M143 H1 S500

Veti

@dakingofhearts2003

that has no effect on the bltouch, it will just prevent you from printing at the wrong temperature

dakingofhearts2003

@Veti So does the gcode look right i then can see if its just a bad crimp job or etc ?

Veti

post a picture of the wiring

Phaedrux

Please verify your firmware version with M115.

If you send M98 P"config.g" do you get any error messages?

Your config is basically correct for a BLTouch connected to heater pin 3 on the expansion port provided you're actually using RRF3.

M558 P9 C"^zprobe.in" H5 F6000 T6000           ; set Z probe type to bltouch and the dive height + speeds
G31 P500 X-39 Y14 Z5                           ; set Z probe trigger value, offset and trigger height

G31 Z5 is a very high trigger height. Be sure to do a calibration measurement once it's actually working.

https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

M558 F6000 is very fast probing speed for the BLTouch. F120 is more appropriate. Your Z axis speed is currently limited to 180mm/min so it can't probe faster than that, but that's really slow for normal movement, might want to change to M203 Z600.