Minimal Bot

built by Edward Rupp

*
Target Environment Locomotion Method
Indoors 3 Wheels
Sensors / Input Devices Actuators / Output Devices
Micro-switch feelers N/A
Control Method Power Source
Autonomous Battery
CPU Type Operating System
PIC Microcontroller None
Programming Lanuage Weight
JAL N/A
Time to build Cost to build
One weekend $15-20
URL for more information
N/A
Comments
This is Minimal Bot. It's is my third robot and was built in a weekend to experiment using the 16C84 single chip computer. The idea was to see if it was possible to use direct drive stepper motors. The robots behavior is very simple. It simply keeps moving forward until the feeler's touch a object, the robot then backs up and turns away from the object and proceeds to wander forward. The Pic was programmed using JAL (Just Another Language) A free basic like language. The body is made of expanded vinyl plastic that is cut on my home made CNC. The plastic is then lightly heated and bent in box and pan break. Thus the platform can be quite complex in shape but be made out of only one peace. The PC board is also made by the CNC. The board is a generic proto design, all traces are cut the by the CNC, along with the holes and the board outline. Total cost was probably 15 to 20 dollars. Most of the stuff was junk parts and the only new parts were the wheels and the H bridge chips. Edward Rupp Loveland Colorado USA Email: Edwardrupp@netzero.net

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