This article can be more of a guide on how to construct an heartbeat sensor utilizing an Arduino. Although a complicated one, this project comes as an interesting one to many electronics hobbyists.

How fast does your heart beat? It’s a tough question to answer, because our heart rate changes all the time depending on what we’re doing and how our body is behaving. However, [Ludwin] noted that ...

In my early ESP32 tinkering days, I’d only use the microcontroller to test with LEDs, resistors, and other circuitry components. In fact, writing simple C++ programs to perform basic tasks on the ...