This device measures fine dust and NO2 concentration in the air while on the move and adds GPS coordinates to each measurement location.

With only an arduino board, two servos, and an hc-sr04, and some python, you can create a room scanner that is capable of showing depth!

This is a very precise scale for any weight up to 1.5 kg!

An Arduino-based digital scale with HX711 and VFD display.

Monitoring temperature and humidity without using a WiFi connection. Suitable for a chicken coop.

Build a simple incident light meter for old meterless film cameras

This project is about a simple movement detector. Whenever any obstacle comes in a line (predefined) a light will glow.

FSM that allows to identify the direction of the object.

How to build an humidity and temperature meter with time display from an old voltage meter casing.

I’m on a mission to reduce the amount of noise my LulzBot Mini 3D printer makes. The stock fan is loud and it's either on or ON!

How long were we released from the gravity of the Earth? This machine measures how many seconds we are zero gravity state.