From http://www.josepino. com - An easy-to-build home-made record player using LEGO NTX, just a few parts with a fair quality. The NTX parts makes it easier with better quality than the older Mindstorms Gramophone.
More details at http://www.josepino. com/lego_robots
From http://josepino.com - An improved version of my "solar-powered four-legged all-terrain walking robot" can walk using four legs. Fasters and better movements. No RCX, no NTX or sensors used, Just gears, one motor and solar power.
From http://www.josepino. com - Using no sensors, no circuits, no transistors or fotoresistors, this home made "Lego Sun Tracker" located the sun withour any problem.
A robotic arm built with LEGO Mindstorms, Uses only two motors and two sensor (one shared). Based on the Lego's robotic arm. More details at http://www.josepino. com/lego_robots/inde x.pl?robot_arm.jpc
From www.josepino.com - A six-legged solar-powered bug bot.
This "robot" uses three legs to stand up while the other three are advancing. No RCX used, just one motor, gears and a 6-volts solar cell to provide power.
Fast as a turtle!
From http://www.josepino. com - A DIY coin mechanism made with some plywood.
This is the third version that I created. Details about it can be found at http://www.josepino. com/other_projects
This version is easier to build, smaller, and allows to change the configuration so can match the size of any coin. Also, it should be easier to implement in any vending machine.
From http://www.josepino. com - A DIY Coin mechanism for vending machines. Simple and easy to build. It can be adapted for your microcontroller problem. It accepts Quarters (25 Cents) and rejects any other coins.
Instructions at http://www.josepino. com/other_projects
