This is a simple LED driver circuit using two 555s and a pair of NPN/PNP transistors to drive several LEDs meant to outline a small sign. Designed with my son for a St Patrick's Day project, in KiCAD.

This is a small size led flasher built with the 555 timer IC that is powered from 2 x 1.5V batteries. The circuit can be used as a flashing metronome, dark room timer, memo-reminder or other similar ...

This project demonstrates a simple LED flasher/blinker circuit using a 555 timer IC in astable mode. It's ideal for electronics beginners and includes PCB design files, a schematic, and a bill of ...