Walker

built by David Mitchell

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Target Environment Locomotion Method
Indoors 4 Legs
Sensors / Input Devices Actuators / Output Devices
2 photosensors
2 microswitches
mercury switch
2 DC motors
speaker
Control Method Power Source
Autonomous Battery
CPU Type Operating System
N/A N/A
Programming Lanuage Weight
N/A N/A
Time to build Cost to build
N/A N/A
URL for more information
N/A
Comments
This Walking robot never had a name but "walker" will do. This is a simple "Braitenberg" type robot was built in about 1985. It has 2 photosensors (LDRs behind lenses) on the front, and two microswitches on the front legs and a mercury switch at the rear. It was powered by a 9V battery and 2 x 1.5 AA type batteries. This robot walks using two motors, each motor eccentrically drive the rear leg which is linked to the front leg which swing back and forth (no eccentric motion on front leg). The Robot seeks light, but if the leg microswitch is activated the robot reverses the motor directions on each motor and emits a dodgy 555 timer driver mini speaker two-tone sound. After a time delay the robot resumes the light seeking state. If the robot falls over the mercury switch cuts the power to the motors. The photo is from the same era, maybe I'll take some new photo's at different angles at a later date. DM

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