@dc42 thank you. This is very helpful. I will give it a try. It seems the assistant you have asks the user to adjust per a given thread pitch. I do like the craftbot method of just continuously probing and letting the use make micro adjustments to see how close they are getting to the desired positions.

Perhaps once we have SBC capability on the Duet2 we can make more elaborate wizards and guided assistants.

@dc42 Thanks

I have updated the firmware to 3.1.1

I am using rr_status to get the status object and will have to read the head temp (which I already have) and compare it with the requested temperature.
I accept that the machine will not execute commands until the temperature is reached but I don't want to send any commands to the machine via a web interface until the head is up to temperature.

Not directly. Only Duet3 hardware supports direct drive of dotstar or neopixel.

With Duet 2, you'd have to drive a pin that switched a controller that, in turn, drove the LEDs.