Smarter Home Energy Use with Open Source and Cheap Sensors.

Arduino based 5" LCD touchscreen weather station with remote sensor unit.

Magic wand to paint with color light based on temperature.

Just a simple infrared thermometer.

A very simple and easy to make thermometer for your room. Not that much to it but it looks cool.

An adequate tool to keep in your First aid kit.

We need to sense intensity of light in many of our IoT/home automation projects. Here I explain a simple implementation of ambient sensor.