The 555 timer IC is a fundamental building block in electronics, and mastering it is crucial for any aspiring electrical engineer or hobbyist. If you're looking for a free LTSpice 555 timer course, ...

A very basic 555 timer-based PCB where pressing a button activates an LED. Submission to HackClub Solder YSWS ...

For researchers, educators and wearable developers, the Neuro PlayGround Lite from Upside Down Labs provides a portable solution for capturing and transmitting bio-physiological signals in real-time.

These microcontroller based projects are covered with detailed explanation of working of hardware, circuit diagrams, software and codes.