My profuse apologies for:

my (very) late answer digging up this old topic (Halloween trick or treat ?!)

but my answer is still relevant (based on the code base of the RRF 3.5.0 rc1 and 3.4.6).

@dc42 said in G30: unexpected probe dive motion range:

If you set the dive height to some value H [...] the code starts the dive at (trigger_height + H) and ends it if the probe is not triggered first at (trigger_height - H)

That is my expectation, but not what the G30 command currently does.

You will notice in the code of G30 command the mention of platform.AxisMinimum(Z_AXIS), variable which I can't make sense of:

ms.coords[Z_AXIS] = (IsAxisHomed(Z_AXIS)) ? platform.AxisMinimum(Z_AXIS) - zp->GetDiveHeight() + zp->GetActualTriggerHeight()

This is in contrast to the probing code of the G29 command, which works as you described without ever using platform.AxisMinimum(Z_AXIS):

ms.coords[Z_AXIS] = -zp->GetDiveHeight() + zp->GetActualTriggerHeight();

Hence my (old yet still relevant) pull request.

Hopefully this patch would not bring any regression, however it might save multiple RRF user from less than desirable unexpected nozzle crashes.

@hughesymendes great you got it working. Just to be clear you don't want to be drawing 2A at 5V from the Duet 2, I assume you mean that the relay is switching 2A max?

@o_lampe M670 just set the IO-Port on and off. I like to set IO's from an SPS and use them to Control the board.
@dc42 Which command I need to poll the inputs in daemon.g?

It kinda works,
I can send a value over serial to the Due and the motor moves back and forth according to the received data. Motor direction depends on the new value being greater or smaller than the actual encoder-register.
Next step is to use the step-pulses from Duets external stepper port to make it run in sync (speed control) and use the dir pin as well.

@phaedrux said in Duet 2 trigger device from Gcode:

take a look here

https://duet3d.dozuki.com/Wiki/Using_servos_and_controlling_unused_IO_pins

Thanks for the information. I must have read this document several times already. It summarizes the method for defining pins well.

I think I'll use the CS5 pin to ground for my application. The hiccup I've had in the literature is finding out what the supplies voltages are. Based on the referenced document, there is no PWM and I believe the output is 3.3V when triggered for CS5 pin.

@N131MG Thank you for your info on this. Its a great help 🙂
Love the test board by the way. Envious.

@dc42 said in Door Open Switch and LED´s:

M118 P1 S"// action:pause"

@dc42 -> you are the best!!!!!! Everything is running now!! 🙂 ✌ Thank you so much!

0_1561475643515_bfb4d75d-c240-4e03-b63d-a5fdd41d9de2-image.png

@hayseed_byte said in M581 external trigger:

https://www.wildbot3d.com/contol-panel/

Thank you, interesting info.