Then you simply lever one direction for a higher gear, and the other direction for a lower gear. That said it would be amazing if the cam plate moved an automatic style indicator through the gears.

We’ve seen plenty of people 3D printing custom gears over the years, but [Mr Innovative] decided against an additive process for his bespoke component. He ended up using a simple CNC machine … ...

Why wait for a company to manufacture the tech you need when you can build it yourself? These nine Raspberry Pi and Arduino courses show you how for $69.99, $353 off the $423 MSRP.