Even though Attiny85 is fitting here, I opted for Digispark just because of its plethora of features like USB programming interface, on-board voltage regulator, and Arduino IDE compatibility. The code ...

Matt Williamson built a tiny, Arduino-based motion sensor that will SMS you when something moves by your desk or into a room. It's completely open source and the notifications system runs on your ...

4. Program the Arduino: Once the hardware is set up, you will need to program the Arduino Nano. The code for this project is available on the Instructables website.

This means it will cancel out different gestures if certain threads aren’t in motion. After a bit of smart programming using IR code and communication protocols, you can set the movements to ...