A system that gives my bike front and tail lights, a turn signal, and a speedometer, all in a clean and simple design.
Make a Big LED clock with arduino and RTC module to make it as a Real Time Clock.
Test and comparison of two PWM methods, to control the battery charge of a "Night Light Control:" 1) Sine function; and 2) PID controller.
PID control system of a light meter that measures and regulates the lighting of a lamp.
Concept with prototype for home automation that can be expanded to professional grade and production ready.
It's a Morse code receiver base on processing the light signals.