An Arduino Uno provides the processing power and drives the serial monitor. A joystick and a Hitachi H48C accelerometer are mounted on a breadboard and wired to the Uno.

They also only implement serial sending (so the Arduino receives) so far, although they mention the next step would be to build the other side of the connection.

If you are a software and hardware developer working with serial ports, you often need a reliable serial port monitor that allows you to capture, display, analyze, record, and replay all serial port ...

He uses a cheap, $12 sensor with an Arduino and a Radiation shield and monitors the data on his computer.