Duet 3 RRF3 BLtouch

Phaedrux

Check your wiring for the servo pin to io3.out. Config looks correct now.
Does the BLtouch do a power on self test?

mrenz999

3V empty
In = White
GND=Black and Brown wire.
Out= Orangish/Yellow
5v=Red
It does do the do a self test. Probe, retract, probe, retract.

Phaedrux

@mrenz999 said in Duet 3 RRF3 BLtouch:

Out= Orangish/Yellow

And you have that one connected to io3.out?
Can you test the continuity of the wire with a multimeter?
Inspect the crimps.

mrenz999

@Phaedrux I do and will do that.. Be right back

mrenz999

@mrenz999 Wires all check out correctly. Did a full power off leave for a few mins and power back on. Does the full test. Had another BLTouch and swapped it out to make sure it wasn't a faulty unit. All the same behavior and still not working.

mrenz999

@Phaedrux Something new now. Tried to home z and it says zprobe already triggered at start of moving probe.

baird1fa

@mrenz999 yes it needs the ^ that turns on the pull up resistor.

Do you have your deploy.g and retract.g files setup?

In deploy.g you need M280 P0 S10
And retract.g needs M280 P0 S90

That might be why it won’t deploy. Once they are setup M401 should deploy and M402 should retract.

mrenz999

@baird1fa
; deployprobe.g
; called to deploy a physical Z probe
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
;M280 P0 S10 ; deploy BLTouch

M280 P0 S10 ;deploy BLTouch

; retractprobe.g
; called to retract a physical Z probe
;
; generated by RepRapFirmware Configuration Tool v3.1.1 on Thu Jun 04 2020 11:20:25 GMT-0700 (Pacific Daylight Time)
; M280 P0 S90 ; retract BLTouch

M280 P0 S90 ; retract BLTouch

baird1fa

Mine had an issue with the steppers being active. I had to send an M18 to disable the extruder steppers. They were causing interference when active.

mrenz999

@baird1fa Duet 3 ? Or bltouch?

baird1fa

@mrenz999 both. I’ve got a BLTouch and a duet 3. Sorry the interference I think was between the duet 3 and the BLTouch.

Phaedrux

I don't suppose you have an oscilloscope?

mrenz999

@Phaedrux Sorry. I do not

mrenz999

@Phaedrux
The z probe is showing triggered on the machine tab, and it's value is 1000 on the dashboard.
Does it matter that I am using io3 ? Should I change it to 7 ?

baird1fa

@mrenz999

It might matter. The documentation says to use io4,5or7. I’m using io4 and it works.

mrenz999

@baird1fa That's what I was thinking. Going to just swap it to 7 and see what happens. Will update either way.

mrenz999

@baird1fa Ok changing it to 7 had this effect. Homed x and y fine. No change. Moved to center of bed and before it headed towards the bed it probed the retracted the probe and stopped moving with an error that the z probe was already triggered. So it triggered at the beginning of the start of the bed movement. Bed is still far away from the probe.

mrenz999

I rechecked all wires. Unplugged and replugged it in. Hard cycled the power and now it seems to be working. Thank you everyone for your assitance

baird1fa

I’m glad we were able to help and you are up and running.

baird1fa

it bet that internally that pin4,5,and7 are the only ones able to do a servo signal.

it would be helpful if there was some error handling built into the firmware that would throw an error when you try to configure an incorrect pin to do servo commands.