RGB LED Ring - A BatchPCB test

All of it.

This is revision 1.21

It is now equipped with an optional (jumper) ultra low drop voltage regulator and can run from either regulated 5V DC or from up to 14V DC (no spikes please). The input voltage is limited by the regulator's decoupling caps. I could only get 16V tantalum types in 1206. It also now supports auto-reset for even easier code updating.

With the onboard regulator it can conveniently be powered by say a 9V block or 4 AA batteries.