BL Touch Configuration
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1. Which firmware version? Look in the Settings General tab of DWC to find out, or send M115.
2. How have you wired your bltouch to the Duet?
3. What do you have in your deployprobe.g and retractprobe.g files?
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Does it light up at all? If it's flashing it is in alarm and needs to be released before it will accept a command. Sometimes mine will be in alarm right on power up because I think my pin is sticking.
Can you hear it make a small buzz sound if you send it a command?
What commands are you using the deploy and retract?
Have you verified that you are connected to the right pins? The wiki describes connecting it to heater pin 3 and that guide uses heater pin 7. which one are you actually using?
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Firmware version 1.21
The bltouch is wired to Heater3 as per the wiki guide.
Deploy: M280 P3 S10 I1
Retract: M280 P3 S90 I1
The BLtouch does its self test and the light goes solid red when printer is first powered on, but wont respond to an M280 P3 S10 I1 command thru the console, nor will it deploy when trying to home.
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Can you hear it make a small buzz sound if you send it a command?
Try adding i1 to your the M558 command in config.g to invert the signal. Then try to deploy and retract.
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Have you used M307 H3 A-1 C-1 D-1 to make heater 3 pin available for use? Run M307 H3 by itself to check, it should respond that heater 3 is disabled.
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Tried adding the I1 to the M558, still nothing. The bltouch doesnt make any sounds.
Running M307 H3 returns "Heater 3 is disabled"
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Probably a wiring issue then.
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I've checked the wiring multiple times and even tried a buddies known working bltouch.
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You could try heater pin 7 instead of 3. See if that makes a difference for you.
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Can you confirm that you are running with VIN power applied and the internal 5V regulator is enabled?
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The jumper is on the internal 5v pins, and Vin LED illuminated.
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Can you post a photo showing how the bltouch is connected to the Duet?
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Heres a closeup of the wiring. https://ibb.co/e1hqkS
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The wiring looks OK to me and I didn't spot anything wrong with the commands you are using. The +5V and ground connections must be more or less OK if the bltouch self test works and the red light comes on. So it's either a problem with the orange control wire, or with the heater 3 output on the Duet. When you tried your friend's bltouch, did you use his cable too?
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Sorry its taken me so long to reply, Ive been quite busy and haven't had much time for the printer. The BL touch is now working. I tried a new wire and sure enough, that was it. Thank you for all the help, its been greatly appreciated.