BlTouch issue.... (One more....)

peirof

I am having problems with the Z-probe that I am using, at the moment a BlTouch sensor.

Until yesterday it worked, following the instructions in [https://betrue3d.dk], correctly. But since yesterday it does not work correctly, I want to think that it will be a problem in the wiring, but I do not know where to put it in ....

I explain ...

1- When I turn on the printer, the sensor performs the initial test, extends and collects.
2- After the initial test, the sensor stays collected, with the light on
3- When I send the macros, which I have configured, to extend, collect, and test. THEY DO NOT WORK. The macros that I have used so far, and that have worked for me are:

3.1.- Extend: M280 P3 S10 I1
3.2.- Regoger: M280 P3 S90 I1
3.3.- Test: M280 P3 S120 I1
3.4.- Reset: M280 P3 S160 I1

I think it goes without saying that if I try to calibrate the BlTouch, it does not deploy ...

I have checked with a multimeter, the continuity of the cables that go from the BlTouch to the Duet board

If the sensor does the initial test correctly:

A- Where is the problem, if it is in the wiring?
B- On the two cables that connect it with the Z-Probe Socket?
C- Any kind of test I can do to discard things?
D- At the moment, I have the BlTouch connected in Heater3. What do you recommend?

Thank you

I have this lines in config.g...

;BlTouch

M307 H3 A-1 C-1 D-1 ; Disable the 3th Heater to free up PWM channel 3 on the Duex board
M558 P9 X0 Y0 Z1 H5 F100 T2000 A4 R0.5 ;M558 P9 H5 F500 T4000 X0 Y0 Z1 ; Set Z probe type/mode 9. H=Dive Height. F=Speed the bed moves

bartolomeus

Are you sure you have it connected to the third heater pin? In betrue3d.dk they have it connected to another pin (heater 7).

dc42

Here are some possibilities:

Servo (orange) wire of the bltouch not connected to the correct pin on the Duet, or a bad crimp connection in that cable. See https://duet3d.dozuki.com/Wiki/Connecting_a_Z_probe#Section_BLTouch for how it should be connected.
Heater 3 hasn't been disabled. Send M307 H3 and it should report "Heater 3 is disabled".
Faulty bltouch.
Faulty Duet heater 3 output.
Using P9 in the M558 command, but you are using firmware earlier than 1.21 so type 9 is not supported. Send M558 and check that is reports type 9.