Arduino radar with 2 x 8 x 8 matrix display.
Tested on quite windy day with plenty of noise on soundtrack.
Radar is not 100% perfect...but good anyway. Needs some finetuning in code to get rid of false readings.
Download code and instructions at https://drive.google.com/open?id=0BxgHajPGkZfQdm9fMWJHTkVlVWM