I've spent a lot of time learning about microcontrollers and very little time working with analog electronics. Wanting to change that, the first circuit I've been exploring is the Astable Multivibrator. It's a set of RC time constants connected to each other, as one charges, it triggers a transistor that discharges the other. The system is never stable so the result is lights tha flash in an alternating pattern.
Note: This project has been submitted to the 2017 Hackaday Prize but it is not eligible for judging since it was built by a member of the Hackaday staff. The project was submitted as a way to test out and make tutorials for other people to use as a guide when working on their Prize entries.
This project uses very few components to build a clever little analog blinker.