I have seen the first video, super cool. The guy is really good at micro-mechanics which I am not at all. The second video I havent seen. It looks good. I wonder if they are off the shelf and you can buy it. Maybe I shouldnt bother with my PCB car and just get one of those.
The wheels I get from china, one EUR for 10 wheels :) I dont want to post a link that will get inactive. Just search "mini rubber wheel" on aliexpress. There is lots of shops selling them, I use 16mm. They are not exact fit for the motor axles so I use wire insulation to make tight fit which sucks.
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