How to use Geiger Bot with the MightyOhm Geiger Counter. Jeff writes –

Geiger Bot is an iOS application that allows you use your iPhone or iPad as a sophisticated display for an ordinary Geiger counter. It works with most Geiger counters that make an audible “click” for each event or count that is detected.

Here’s how to get your MightyOhm Geiger Counter working with Geiger Bot. These instructions were tested with an iPhone 4, but should work with other iOS devices (iPads and other versions of the iPhone).

Geiger Counter Kit – Radiation Sensor. Detect particles and/or make a cool random number generator with this handsome Geiger counter kit. This easy-to-make pack of parts turns a simple Geiger-Muller tube (included) into a portable blink, beeping radiation detector. You can also connect an FTDI friend to the header, to get serial output for datalogging on your computer.

We put this kit together in a couple of hours and hand lots of fun bringing it around and listening for ticking sounds near our smoke detectors, bananas, countertops, Brazil nuts, chunks of Uranium, etc. It includes all components (PCB, tube, & parts) but you will need basic soldering tools and two AAA batteries to complete it.

Get one!