Bltouch Duet2 WIFI crash

[Iker]

@dc42 How can I be sure it's coming from the sensor?

[dc42]

@Iker the wiring to the Duet in your photo is clearly wrong for the Crealty versions of BLTouch. It's likely to be shorting out the 5V rail or feeding excessive voltage into the output on the expansion connector that you have connected the yellow wire to.

I suggest you correct the wiring to agree with the table in the documentation that I linked to.

[Iker]

@dc42

[A Former User]

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[droftarts]

@Iker It looks like your probe is wired like the 'other version', ie:

	GND (Left)	+5V (Left mid)	Control (Middle)	GND (Right mid)	Out (Right)
Genuine BLTouch	Brown	Red	Yellow	Black	White
Creality kit (other versions)	White	Black	Yellow	Red	Blue

So wire it:

Duet Z Probe connector pin	Duet expansion connector pin	BLTouch pin	Colour
IN		Out	Blue
GND		GND	Red or White
	5V (pin 1)	+5V	Black
	Heater3 (pin 8 )	Control	Yellow
	GND (pin 2)	GND	White or Red

Ian

[Iker]

@Iker It work's !!!! But how i home with it beacaused i need to home in X and Y before home in Z and th BLTouch doesn't deploy and is out of bed

[Iker]

@droftarts It work's !!!! But how i home with it beacaused i need to home in X and Y before home in Z and th BLTouch doesn't deploy and is out of bed

[A Former User]

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[Iker]

@Herve_Smith Thanks you !! it work do you have the probe map file for creality ?

[A Former User]

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[A Former User]

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[Iker]

@Herve_Smith LOL but your Mesh.g contain your M557 ?

[A Former User]

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[Iker]

@Herve_Smith Thank you very much for all your advice I just have 2 last questions how do I define on the machine that the BLTouch is 45mm to the left of the nozzle. and can i have your grid map please.

[A Former User]

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[Iker]

@Herve_Smith Good evening all the home works perfectly but I have another problem I don't see how to adjust the offset between the probe and the nozzle I know that I know in the G31 command but I don't understand how it works because the home works a la perfection in X and Y but the nozzle is at least 0.5 cm from the bed and the BLTouch does not retract so when I go down the Z axis the sensor blocks and displays the values ​​1000 it looks like a kind of security

[OwenD]

@Iker Do you have the BLTouch mounted at the correct height?
With the probe retracted and the nozzle touching the bed, you should have 2.3-4.3mm from the bed to the end of the probe.

To measure

• Start printer
• Send G28 X Y ; Home X & Y only
• Send M564 S0 H0 ; allow movement without homing
• Jog to centre of bed
• If needed, send M280 P0 S80 ; retract BLTouch
• Place piece of paper on bed
• Jog Z axis down until nozzle just grabs paper
• Adjust BL Touch mounting position to correct height per drawing
• Send G92 Z0 ; set Z axis position to zero
• Jog Z axis up about 10mm to clear bed and remove paper
• Send G30 S-1 to measure Z probe offset in Z direction
• Take not of reported measurement.
• Follow instructions here to measure probe offset in X & Y directions
• Adjust config.g and restart printer