I’ve been using my MPCNC for is a test bed for me to learn more about Machinekit.
I’m running Machinekit on a Beaglebone Black using a Cramps cape.
Anyway, I’m very close to getting converted over to Ryan’s 525 assembly with the T8 nut.
One of the things that I’ve been wanting to try out with Machinekit, is auto homing and deracking.
I’ve been using gantrykin kinematics which seemed like a good idea at the time, doesn’t have that capability.
In machinekit, there is a configuration there that automatically de-racks a gantry
Here a example
So what I’m shooting for is auto-deracking and homing two gantries independently.
If I can manage to get this to work, I think this should be pretty cool.
In order to get auto-deracking to work using Machinekit, I need need to be able to do fine mechanical adjustment on one of the switches to align things. This is pretty much a work in progress for me. In the current issue of Digital Machinist there was an article on limit switches for the Mini-Mill by Don L. Shaffer. He had some configurations in there, that I had not thought about before, that I might wind up trying for a limit over-run.
On a side note, I had not foreseen is that the 525 carriage is slightly taller. I have a cable chain tray that was resting on the steppers that I need to raise.
In addition, I wanted to support the motors a little better because of a mod I did, as well bolt on some aluminum end stops on the printed bracket.
This is totally experimental and I’m sure Ryan can come up with something way cooler.
I thought I throw it out there to get some discussion going on end-stops and homing and de-racking.