This robot is made of a small garbage can. It is IR remote controlled and has RAM memory. It can be programmed to roll a specific route that lasts up to 20 minutes. It has a simple ultrasonic collision avoidance system, and can maneuvre itself around a room. It has a sound system that can tell the time with a female voice, alert you when it needs a recharge and alert when it "sees" something in front of it. It took a year to build and costed aprox. $400. Parts: 32 channel IR Remote system 2 12V driving motors 1 12V Rechargeable Camcorder NiCd battery 1 Digital speaking watch 1 ultrasonic position system 1 sound unit 1 12V built in recharge unit and a lot of electronics Visit my site at : http://www.image.dk/~croops Email: croops@image.dk