Audiomatica Medusa turntable with Clio Pocket

[pelanj]

I own a Clio pocket system and I found the instructions on how to build the Medusa automatic turn table: https://www.audiomatica.com/wp/?page_id=3024

I will not build exactly this one, but it will be also based on GRBL, Arduino and CNC shield. I will use two smaller motors and a pulley between them, just because I had them from a 3D printer. Powered from an old laptop supply.

From a serial terminal, it works perfectly. I got it moving also from Clio Pocket - if your Windows use a decimal comma instead of a decimal dot, you need to change that in Windows to get it to work. At least in the current 2.2.0.0 release.

 

[pelanj]

Motor holder done, trying to figure out the best layout for the non rotating part with supporting wheels.

 

[pelanj]

Some progress. Just using some leftover laminated chipboard. There are still a few parts to be printed and the rotating table machined.

 

[pelanj]

Ready for a test tomorrow

 

[dreamth]

Try instead tcm2208, tcm2209, tcm2226 in standalone stealthchop2 mode where it ouputs true sinewaves.

 

[pelanj]

I just used what I had at home. If I can get precision within 1 degree, it will be enough. I need to find some better wheels with rubber and roller bearings.

 

[pelanj]

So this is more or less a failure. I upgraded the belt from 6 mm to 10 mm and a larger toothed wheel. And the two motors still loose steps at some points, the screw for the axis is maybe bent or there is too much friction somewhere. I still think a pair of NEMA17 motors must be able to handle this - I only need a higher gear ratio. Now I need to figure out a gearbox to fit.

 

[Keebon]

Hello, Does anyone have the Medusa turntable working under Clio Pocket?
This is because I can control the turntable from Arduino IDE, but not from Clio Pocket. When I click the link button it does seem to be connected.
I also do not see in Clio any possibility to adjust the bautrate. It defaults to 9600 baut for the Aruino (Windows device manager). In the manual I see that in CLIO QC scripting it is set to 115200. I did adjust the baut rate once in Windows device manager, but that made no difference either.

Hopefully someone has a solution.

 

[pelanj]

I had it working - the problem was that GCode expects dots, but Windows is sending commas instead (in most European countries). You need to force the environment to decimal dot and it should start to work.

 

[Keebon]

Hi Pelanj,
Thank you. That's the solution, it's working now.