The hardware is consists of an Arduino microcontroller (here an Arduino Uno R3) and a pre-wired soil moisture sensor module. The soil moisture sensor module , built around the LM393 comparator ...

They’re using a cheap sound sensor module and an Arduino to catch instantaneous photographs, with students caught in the act of popping balloons. The goal here was to keep things as simple as ...

In this post I’ll discuss a popular and cheap infrared line tracker module – the HW-006 (v1.3). These modules, typically seen in line following robots, are ideally suitable for white/black line ...