Citizen Sensor: MQ-7 Carbon Monoxide Breakout Kit by jmsaavedra
Perfboard Hackduino (Arduino-compatible circuit) by jmsaavedra
Augment a Moog Etherwave Theremin by jmsaavedra
Custom PCB Prototyping using a Laser Cutter by jmsaavedra
Arduino by CMPalmer
All Steps Viewing View all steps of an Instructable on the same page when you're a Pro Member.
(forgot username/password?)