Question 2dof compact build. Motor question

So far my build is:
These motors
2 BTS7960 drivers
Random Arduino mega I have lying around
1 600 Watt power supply
Random potentiometers I have lying around.
Ujoint from an old drive shaft I have

First question - Are those motors quick enough for a basic 2DOF?

Second question - Any tips for a compact build? My general thought is a 2.5ftx3.5ft rectangle top and bottom. I have a welder but I'm in an apartment like area so grinders and such are a bit much.

75rpm seems low but I'm not aming for a ton of movement.

My motors are 36RPM and I don’t have any complaints. The lower RPM gives you more torque for the same power.

SMC3 was designed for Uno. It doesn’t do much abstraction. I know it won’t compile on Leonardo due to the way that it sets up PWM on pins which are not PWM pins by default. Mega I don’t know for sure. You can always buy an Uno if it doesn’t work.

Good to know the motors look like they'll work. Since I'm working in a compact space, more torque makes sense. Was a bit worried one power supply wouldn't be enough.

And yea, I have a drawer full of different arduinos. One of them will work lol.

Your PSU will work but when I upgraded from under spec to over spec it worked better. This meant I had to dial down the output in some cases. I think my original PSU was only 360w.

Power supply 1 piece for 2 motors 24V 13,4A 75rpm will be too weak , you need one power supply for one motor. these motors can draw up to 20A maximum.
If you are looking for a compact design for a car simulator see this one
https://www.xsimulator.net/community/threads/diy-3-dof-inspired-by-dof-reality-h3-model.18273/
IBT2 bridges are too weak for these motors ( I tested, burned 8 pieces )
Better use this 100A controller
https://www.xsimulator.net/community/threads/reasonably-priced-100a-motor-controllers.17638/
( I tested , it works smoothly in mode 1)

24v x 40amps = 960w. I don’t see a problem. 1200w power supplies are common.

Thanks for the info. I really don't want to reinvent the wheel. I'm just looking for what works. Taht's why I got the IBT2s. I am having an issue where quick movements seems to shut off the power supply for a second. I thought it was because it was one power supply for 2 motors but even if it's just one, it does it too. Gonna guess the power supply isn't enough. But I found it on another build so I'm curious as to why I'm just having the issue.

I was in a similar situation with a third traction loss axis. I don’t know much more than you about a solution but I suspect that the motor and the ibt2 just didn’t get along. The symptom sounds similar.

I tried a more expensive driver but unfortunately it self destructed after a few minutes of operation. I got my money back and have moved on. Others on this forum recommend this solution.

https://www.aliexpress.com/item/1005005949153753.html

Are you sure the Arduino is still running? I added code to the main loop to flash an LED which will stop if the CPU goes away.

I ordered the 100a driver that seems to be going around. Looks like people are having good luck with it. Also got a second PSU and 2 capacitors to try to keep it from dipping too hard. I like your idea of the LED to verify. The SMC tester thing doesn't seem to lose connection though but it's always nice to have a visual.

Well I went down a chatGPT hole and it suggested these 63v capacitors. It says to wire them in parallel just before the driver for each power supply. But looking around, I don't see anyone else here that's done this. Is GPT hallucinating?