replacement controller options?

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jet townsend

Dec 8, 2020, 3:23:15 PM12/8/20
to lasersaur
Two of my three controller boards have died in the past year and I'm
still debugging some mystery crashes/lock-ups.

Has anyone looked at replacement controllers? I've heard good things
about the Cohesion:

but there are a lot of options:

Jet Townsend, IDSA
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Torsten Martinsen

Dec 9, 2020, 12:35:19 PM12/9/20
At my local hackerspace, I rebuilt our Lasersaur a while ago to use an MKS SBASE (Smoothieboard clone) as a controller. The board runs GRBL, and a built-in APU runs LaserWeb (with some custom modifications to handle access control).

Works quite well.


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Dec 9, 2020, 12:44:32 PM12/9/20
to lasersaur
I bought the controller from openbuilds.

It's still grbl, works for cnc, plasma and laser. And with any software compatible with grbl.
I didn't installed it yet because because the driveboard still work but I use it on a cnc and want at some point to have some alike workflow for the both machines. They are in use in a fablab so it would be easier for the learningpath.

I tried laserweb and, they both could work for laser and cnc.

Anyway, that's my option. ;)


jet townsend

Mar 10, 2021, 10:52:45 PM3/10/21
to lasersaur
So, after doing a lot of research, and being unable to fix my mystery
crashes (even with Stefan's help), I think I found a replacement controller.


Because I have all the needed power supplies and stuff I just got the
basic controller kit.

First bit of good news -- the cable that goes from the UI/panel to the
stepper driver is roughly 2m long. That means I can make an enclosure
for the front stage left and run the cable to the stepper motors/PSU
where the current PC board is located.

Looking at this build photo:


If you were standing near the place where the lasersaur table touches
my welding table (the table with drinks and a laptop), it would be at
the front, on the side, and at a roughly 45 degree angle as I work

Once this is installed, I'll be looking at new CO2 lasers. There's one
for about $2700 (shipped to PA, US) that is a 200W drop-in replacement:


That's half the cost of a used 80W Rabbit, but I'll pay that much for a
bigger bed and twice the cutting power.

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