I have always loved the idea behind Circuit Hacking Mondays, which happens at Noisebridge every Monday for the past n years. Sudoroom will be having Hardware Hacking Tuesdays from now until t, and we need to come up with some stock kits for n00bs to put together to learn how to electronics! seeing as we just got a huge donation of stuff (listed below) I say we come up with something that uses these excellent, FREE recycled components that would otherwise end up in a landfill or our lungs. It helps greatly that the components just happen to be perfect for... DIY micro-music synthesizers!!! picture this: a kit you can put together at sudoroom which, when you're done, makes awesome musical sounds and maybe sequences with a bunch of dials to turn and buttons to push. your mission: design a cool kit using the parts we have plenty of! the winning designs will be made into actual circuitboards sent out for fabrication and zillions of people will build those kits! we have unlimited potentiometers (board-mounted with a long enough shaft to turn with fingers) unlimited board-mounted buttons (four-pin, either SPST or DPST) unlimited piano-style DIP switches (two and eight positions) unlimited op-amps (250MHz bandwidth OPA354 i believe) unlimited 74HC14 schmitt triggers (six oscillators of any frequency) RCA jacks, headphone jacks, LM1877 audio amplifier chips and all the resistors and capacitors you could possibly need your design should not include a microcontroller, just passive parts that go together and make noise. Input will be 5 volts DC, output will be line-level audio for going into amplified speakers. we have lots of logic chips like 74HC163 four-bit counters and 74AC351 8-input multiplexers - so it should be easy to add a sequencer to your design! if you have plug-in breadboards, bring them in, it will make it easier to prototype this stuff. see you on tuesdays! -jake On Sat, 31 Jan 2015, Patrik D'haeseleer wrote: