Plexi

built by Henry Arnold

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Target Environment Locomotion Method
Indoors 2 Wheels
Sensors / Input Devices Actuators / Output Devices
IR sensors
Bump sensors
DC motor
LCD display
speaker
Control Method Power Source
Autonomous Battery
CPU Type Operating System
Motorola HC11 None
Programming Lanuage Weight
N/A N/A
Time to build Cost to build
N/A N/A
URL for more information
N/A
Comments
Plexi is constructed using a plexiglass display dome for his top and heat bent plexiglass for the tubular body. All other parts are simple flat cut pieces. He uses a New Micros 68HC11 single board computer running BASIC11. 18 Infrared and switch bump sensors allow him to navigate around a room without bumping into things. A home brew closed loop motor control system allows accurate distance and turning motions. An RS-485 network of STAMPs and PICs provide extra functions such as LCD display, sound, and status modules. The motor gearboxes came from a child's motorized vehicle and battery power is a 12V 6ah gell cell battery. Plexi has simple maze navigation abilities and random wander routines. He also reacts to his environment using his sound and display abilities.

Email: henry57@aol.com

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