Flickr member Jonnay posted some photos documenting the building of an x0xb0x kit. (A DIY monophonic synthesizer that emulates the Roland TB-303). The x0xb0x is not just another MIDI-controlled TB-303 clone. x0xb0x is a full reproduction of the original Roland synthesizer, with fully functional sequencer. The x0xb0x is one of my favorite projects, it’s open source hardware at its best. Link.