If you want to tinker around with some free hardware and make something useful in the process, have a go at making a function generator out of this dev board. Be sure to send it in when you’re done.

The RPB comes with a wide range of free software tools including a Integrated development environment, C compiler , and graphical code generator along with a range of demo applications. Hardware ...

With the next version of this system the hardware and layout has changed somewhat, using a commercial handheld Geiger counter (GMC-320+) and its audio output as a generic input for any MCU.