Arduino is an open-source physical computing platform designed to make experimenting with electronics more fun and intuitive. Arduino has its own unique, simplified programming language, a vast support network, and thousands of potential uses, making it the perfect platform for both beginner and advanced DIY enthusiasts.
This one was turned on and off for 10th of a second
This one was turned on and off for one second
This is the original one, but the one on the bottom is when the dial is turned on the low side, it's going to blink faster, and the other way around.