Bicycle Light
I made these PCBs in order to make my own bike lights. The control board's job is to take power and make the LEDs light up when you want them and in the way you want them. For example you can set up the board so they light up only when it is dark, or make them flash only when you send a control signal. The flash period can be changed by changing the components used.
Assembled control board with an "Always Flash" configuration
The LED board is a 5S9P array of LEDs
Test of the assembled PCBs