The Arduino Sketch (code) uses the external interrupt ... that to interpret them it is necessary to implement a simple frequency counter. Since this project uses a water flow sensor containing 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.

The microcontroller-based concept was chosen because I wanted to scale the sensor system later to suit other applications. Here is the diagram of my Arduino infrared close proximity sensor. As you can ...

And what's a geiger counter without ominous clicking? The Arduino microcontroller counts ... homebrew alternative to commercial radiation sensors. Oh yeah, it's all open source, they released ...

He has a very nice $290 laser particle counter, but was really curious how the $12 sharp sensor he found would stack up. To find out, he plugged it into an arduino and started logging both on pachube.

To make things even more challenging, the project incorporates a counter that tells you ... with only an Arduino UNO, ultrasonic sensor, force-sensitive resistor (or push button), and piezo ...

The Pressure Sensor Module incorporates a material called Velostat with the Arduino. This material adds more resistance when more pressure is applied to the material. This module also uses the RGB LED ...