DIY sonar visualizer with Processing + Arduino

[flickr video=4106571163 secret=6abc138077 w=600 h=450]


Spotted in the MAKE Flickr pool:

Lucky Larry made this neat looking radar visualizer for an ultrasonic scanner, using Arduino and a Processing sketch. I dig the green sweep line! He has an excellent write-up of the project on his blog, including schematic, wiring, and source code.