ArduinoScope implementation in Processing of the HB100 Doppler Motion Sensor
Breakout Board: http://www.limpkin.fr/index.php?post/2013/08/09/Making-the-electronics-for-a-%247-USD-doppler-motion-sensor
ArduinoScope is available here: https://github.com/konsumer/arduinoscope
Arduino requires Standard Firmata.ino script
VCC - 5V GND - GND FOUT - D2 VOUT - A0