If you haven’t been paying attention, big wheel trikes are a thing. There are motor driven versions as well as OG pedal pushing types . [Flux Axiom] is of the OG (you only get one link, now i… ...

A TCS3200 color sensor is a much better choice, and you can buy a nice assemble module for about $2 from our friends in Shenzhen. And before you say the point here is DIY, DIY doesn’t mean 20 ...