In the Dynamo project at UBC, we have developed an extensible facility for experimental mobile robotics. It currently consists of nine radio-controlled mobile robots, two CCD colour video cameras, a video transmitter and tuner, radio controllers, Datacube image processing hardware, and a network of transputers. Software for tracking, control, and simulation has also been developed. Ongoing projects include soccer playing, and constraint programming for robots. We describe the facility and outline the projects.