An angry, barking, blue-in-the-face mad, proximity sensor soldering kit, from Boldport.

Once turned on, it calibrates to its environment and then detects an object approaching (well, let's face it, a cat, this is about cats). At a certain threshold it starts the mad barking.

The project is based on original brilliant work by . Boldport collaborated on the project, although the highly optimised —every bit is sacred, every bit is great—is solely the work of LuckyResistor.

Note: requires surface-mount and through-hole soldering!

PissOff was project #9 of the Boldport Club.