Maestro, RRF3 and BLTouch issues

PaulHew

I put the m574 line in and Z axis goes up then down but no probe deploy.
I have to use emergency stop.

homeall.g as requested.

Paul.

Veti

your home scripts are not for a probe.

please return to the configurator and select a z-probe the z endstop and recreate everything.

PaulHew

I did as Veti asked and created the config again.
I did post an issue in regards to the configurator yesterday as it is complicated in trying to use the Ender3 template and creating an RRF3 config with BLTouch. However.....

I think I have found the problem.

I found this in the Gcode bible. https://duet3d.dozuki.com/Wiki/Gcode#Section_M558_in_RepRapFirmware_Num_3

"Example 3 (BLTouch on Duet Maestro) - old code:

M558 P9 H5 F120 T3000 ; BLTouch connected to Z probe IN pin
...
M280 P64 S10 ; send control signal to BLTouch through Z probe MOD pin

New code:

M558 P9 C"zprobe.in" H5 F120 T3000 ; BLTouch connected to Z probe IN pin, free up MOD pin
M950 S0 C"zprobe.mod" ; servo/gpio 0 is Z probe MOD pin
...
M280 P0 S10 ; send control signal to BLTouch through servo/gpio 0"

With no disrespect... The lines in the GCode manual need changing as M950 needs to be before the 558..

So I dropped in the M950 command first, then the M558 command as in the manual.
Then ran the M280 command and the pin fired. Brill

Ran the individual axis homing X, Y and then Z.
I had my finger under the probe and it hit and the moved back up.

Do I need to use the ' ^ ' on the M950 command or leave it without?

Regards,

Paul

Veti

@PaulHew said in Maestro, RRF3 and BLTouch issues:

With no disrespect... The lines in the GCode manual need changing as M950 needs to be before the 558..

the configurator creates M950 before M558 for me.

the ^ is the command for the pull up register. if it works fine for you without it then you dont need it.

dc42

@PaulHew said in Maestro, RRF3 and BLTouch issues:

M558 P9 C"zprobe.in" H5 F120 T3000 ; BLTouch connected to Z probe IN pin, free up MOD pin
M950 S0 C"zprobe.mod" ; servo/gpio 0 is Z probe MOD pin

The correct code is as shown, except that for new BLTouch you need to enable the pullup resistor:

M558 P9 C"^zprobe.in" H5 F120 T3000 ; BLTouch connected to Z probe IN pin, free up MOD pin
M950 S0 C"zprobe.mod" ; servo/gpio 0 is Z probe MOD pin

If you swap the M950 and M558, that won't work using RRF 3.0 stable (because the Z probed owns the zprobe.mod pin by default in that version), but it will work in 3.01beta.

Use M401 and M402 to test BLTouch deployment and retraction.

PaulHew

This is getting frustrating!

More info. I put the following lines into a new macro, I copied them directly from the config.g

M950 S0 C"^zprobe.mod" ; create servo pin 0 for BLTouch
M558 P9 C"zprobe.in" H5 F120 T6000 ; set Z probe type to bltouch and the dive height + speeds

Powered off the Maestro and back on again, 1) to reset the pin back to its normal position and 2) To make sure it fires on startup.

Waited 30 secs. Sent the M280 P0 S10 command and the pin does not fire.

Ran macro with the 950 and 558 commands above, then the M280 P0 S10 and the pin fires.

It seemed like it was not reading the config.g properly, so I took the original SD Card which came with the Duet, Format and copied all my new stuff over.
Same issue until I run the macro the probe does not deploy.

Final Test, reboot, pin is in. Run individual homing, Z does not deploy pin.
Reboot again.
Run macro, run individual homing and the pin deploys when it prepares to home Z.

Also created a new config.g but no difference, still have to run the macro before homing.

I have included my Sys directory and the macro.[0_1579277936333_PMFH Sys folder.zip](Uploading 100%)
Hope someone can shine some light.
retractprobe.g homez.g homey.g homex.g homeall.g deployprobe.g config-override.g config.g bed.g [0_1579278013302_RRF3 Probe](Uploading 100%) RRF3 Probe.txt

Kind Regards,

Paul

DIY-O-Sphere

@PaulHew said in Maestro, RRF3 and BLTouch issues:

M950 S0 C"^zprobe.mod" ; create servo pin 0 for BLTouch

M558 P9 C"zprobe.in" H5 F120 T3000 ; BLTouch connected to Z probe IN pin, free up MOD pin
M950 S0 C"zprobe.mod" ; servo/gpio 0 is Z probe MOD pin

That should be the right code.

DIY-O-Sphere

@DIY-O-Sphere
The content of files is looking good. Exept the misassign of the probe in config.g

PaulHew

@DIY-O-Sphere You are right, Just swapped the lines round in my config.g and it worked.

That came out of the config tool that way round.

Thank you. I thought I was going mad.

Makes sense now when I run my macro, 558 effectively was the last command so when 950 runs from my macro it sorts it out.

Thank you again.

@dc42 and @Veti
Apologies guys, that is why I thought the GCode wiki was wrong, as that how it came out of the config tool.

Paul.

DIY-O-Sphere

@PaulHew said in Maestro, RRF3 and BLTouch issues:

That came out of the config tool that way round.

You have first to unassign zprobe.mod from the modulation pin.
Only then you can assign zprobe.mod to the PWM control.

Else the Bltouch is not selectable in the endstop tab.

That generates a proper configuration.