BLTouch not really working

[modl]

@jay_s_uk They work every time at startup, but not after homing x and y

[jay_s_uk]

@modl that indicates that you either have a wiring issue or you have something in your homing files thats causing issues.
can you post homex.g and homey.g?

[modl]

@jay_s_uk So M401 and 402 actually work after homing x alone.

; homex.g
; called to home the X axis
;
; generated by RepRapFirmware Configuration Tool v3.3.15 on Mon Jan 09 2023 14:50:13 GMT+0100 (Central European Standard Time)
G91               ; relative positioning
G1 H2 Z5 F6000    ; lift Z relative to current position
G1 H1 X-360 F1800 ; move quickly to X axis endstop and stop there (first pass)
G1 H2 X5 F6000    ; go back a few mm
G1 H1 X-360 F360  ; move slowly to X axis endstop once more (second pass)
G1 H2 Z-5 F6000   ; lower Z again
G90               ; absolute positioning

; homey.g
; called to home the Y axis
;
; generated by RepRapFirmware Configuration Tool v3.3.15 on Mon Jan 09 2023 14:50:13 GMT+0100 (Central European Standard Time)
G91                ; relative positioning
G1 H2 Z5 F6000     ; lift Z relative to current position
G1 H1 Y-1000 F1800 ; move quickly to Y axis endstop and stop there (first pass)
G1 H2 Y5 F6000     ; go back a few mm
G1 H1 Y-1000 F360  ; move slowly to Y axis endstop once more (second pass)
G1 H2 Z-5 F6000    ; lower Z again
G90                ; absolute positioning

[jay_s_uk]

@modl so theres nothing in there that should stop M401 and M402 from working.
next is to look at your wiring and make sure nothing is being pulled etc

[modl]

Ok M401 and M402 don't work after homing y alone, could there be a short somewhere with y endstops or motors ? Or could an overload cause this?

[modl]

@jay_s_uk Physically everything looks fine. And if i'm resetting the system, M401 and M402 will work at the exact same position

[jay_s_uk]

@modl can you home Y and then send M558 and post the output?

[modl]

@jay_s_uk
At startup

M558
Z Probe 0: type 9, input pin io4.in, output pin nil, dive height 5.0mm, probe speeds 120,120mm/min, travel speed 6000mm/min, recovery time 0.20 sec, heaters normal, max taps 1, max diff 0.03

After homing Y

M558
Z Probe 0: type 9, input pin io4.in, output pin nil, dive height 5.0mm, probe speeds 120,120mm/min, travel speed 6000mm/min, recovery time 0.20 sec, heaters normal, max taps 1, max diff 0.03

[modl]

@jay_s_uk I found the culprit !! I actually had an extruder wired the wrong way when i first powered the machine, I rewired it as soon as i found out but it's been getting really hot even if idle since then. I unplugged it from the board and the probing now works. How to know if the stepper is cooked ?

Thank you very much for all your replies and your guidance

[modl]

Hope i didn't cook the driver...

[jay_s_uk]

@modl glad you found the culprit! if it gets very hot even when not in use thats not a very good sign at all. is RRF generating any warnings?

[modl]

@jay_s_uk No RRF doesn't ring. I tested the coils resistance though one is .4 ohms the other is 4.8. I guess this one's cooked. Any way to know how the driver is doing except plugging in an other axis an changing config.g?

[jay_s_uk]

@modl thats probably the easiest way to test the driver. Thats the way i usually test drivers

[modl]

@jay_s_uk OK I'll try that. Again thank you very much!

[modl]

It was actually pretty fast, and the driver is doing fine

[jay_s_uk]

@modl fantastic!