MPR&P-V2(EngineeringšŸ˜‰)... really?

I will be testing with an airedale, though there’s almost an embarrassment riches in GPIO on that doberman!

Have you put a DMM on your 5V rail on the 6X?

Sorry, David.
I bought bolts to use with the build I started, and I just don’t think a trip to cut/grind old printer rails down will fit in my schedule near-term. So I did a quick remix and sent some modified parts off to the Core One L. I want to get the small MPR&P assembled and running before I leave for SMRRF so that I can work on the big MPR&P after I get back and before RMRRF.

It’s just a simple remix to push the holes all the way through for the bolts.

I’ll do the same with the motor mounts for my first build.

1 Like

Not yet. Switched to USB to get the job done that day and haven’t touched it since.

Wifi worked once every 5-10 boot cycles. Might have to scope it… I’m guessing it’s draw during boot that’s the issue. I dunno… I haven’t looked at the schematics. The Airedale itself continues to work fine.

It’ll pop back up to the top of my list of distractions at some point.

2 Likes

I’m continually frustrated with myself and my chronic procrastination… I could have done this weeks ago. But here it is… and late, as usual.

Finally decided to switch out the little 8-bit GRBL controller with a Jackpot V1 and FluidNC. Here I’m air-milling one of @joegomez1479’s badges… and I’m impressed at how much smoother, quieter, and snappier it is. I used a proper config.yaml with LR4 speeds and accelerations… only changing the steps/mm to get me pretty close to scale moves.

:man_shrugging:

7 Likes

Nothing wrong with the original controller! You built a spare parts box build and I suspect that others would do the same.

Yes, those TMCs are amazing and FluidNC does a great job of running the machine.

1 Like

I suspect that had I switched to the stronger Jackpot sooner… I might not have spent so much time trying to adjust the Z-lift leadscrew and might have moved on. Watching the machine now, I have no doubt that it’s doing fine… and suspect that it would have done quite well with one, if not several, of the printed leadscrews I tried.

2 Likes

I love the flexibility the machine has. I think the beefier lead screws would probably have been just fine for a bootstrap build, but you’re going to see that machine is a beast with the current config.

I need to get mine up and running. Wait till you see what happens with closed loop stepper control… (which would need something like the doberman board in the FluidNC ecosystem)

1 Like

Hmm. Still hankering to build one of these but also foiled by the EMT. 23.4mm O/D. Only seen an approximate equivalent in aluminium so far. I shall keep looking :smiley:

1 Like

Can’t wait! With all the traveling and build activity you’re planning for the upcoming shows, I’m holding my breath and get tired just thinking about it… :wink:

Here’s a better video of the first air-milling moves of MPR&P that shows positive control with the Jackpot controller and FluidNC and configured with LR4 speeds and acceleration. I’ve changed only the steps/mm settings on all axis to provide proper scale movement.

6 Likes