I recently had to build an infrared close proximity sensor that could tell if something was dropped in a parcel delivery drop box. After some searching, I ...

This is a simple arduino project for a soil moisture sensor that will light up a LED at a certain moisture level. It uses Arduino Duemilanove microcontroller board. Two wires placed in the soil pot ...

This build is about using the temperature sensor in your clock. The ATMega328p, the chip at the heart of all your Arduino Uno clones, has within it a watchdog timer that clicks over at a rate of ...

The sensors have a low detection limit for NO2 (<10ppb) and a fast response time. They are particularly well suited for air quality monitoring and serve as a solution to the increased demand for ...

The sensor is so sensitive that it can detect close to 10 parts-per-billion of NO2 in under 15 minutes and, crucially, can operate at room temperature - even performing well in humid conditions, a ...

Because of the affordability and seeming ubiquity of the Arduino platform, they have been hard at work this last month trying to get their Geiger counter sensor board for an Arduino out the door.