This is an open-hardware one-button time-lapse camera timer initially developed for a Canon 400D Digital SLR camera. It can be used to take photographs at intervals from 1 second to 65535 seconds (approximately 18 hours). Uses a PIC microcontroller.
Software and hardware for a radio controlled 'laser' combat game. A microcontroller is connected to a radio receiver and can send IR signals to another player with the same setup. When a valid IR code is received initially the throttle will be cut.
A really low footprint (< 10 Kb) Java VM and replacement firmware for the Lego Mindstorms RCX microcontroller, which is part of Lego's Robotics Invention System. TinyVM is the progenitor of <a href="http://lejos.sourceforge.net">leJOS</a>.
This low cost project is a RC servo like position control of one or two geared motor(s) with a pot as angle feedback. You can send the arduino microcontroller a value from 0 to 1023 and the arduino will control the motor speed and direction to reach your target value. The PID algorithm will insure that the motor will not get into hold vibrations if the pot has some influences. This article will describe where you have to take attentions and what you have to setup to get the best results. ...