Simon Restrepo upgraded his bicycle helmet with a nifty safety improvement, LED turn signals.
After a close call with a bus while riding his bike one night, Simon wanted to improve his visability while riding his bike. He had a Teensy 3.2 handy and decided to add LED turn signals to his bike helmet.
The turn signals are pretty easy to put together. The Teensy fits into a tictac box to protect it and the project is powered up by a small power bank. The turn signals are activated by a couple of push buttons – one for left and the other for right.
This instrucables page details how to make your own.
Code for the project is published on GitHub.