Bilby2

built by Ray Fairall, Angela Durie

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Target Environment Locomotion Method
Indoors 2 Wheels
Sensors / Input Devices Actuators / Output Devices
four opto-gate sensors two stepper motors
Control Method Power Source
Autonomous Battery
CPU Type Operating System
BASIC Stamp None
Programming Lanuage Weight
BASIC N/A
Time to build Cost to build
12 hours $80 (Australian)
URL for more information
N/A
Comments
Bilby2 is a generic machine built around a set of electronic circuit boards that we have designed so that local school kids can participate in the University of Southern Queensland (USQ)National Bilby competition. A Bilby is a small simple robot that runs a maze like path. The latter is easily constructed from white melanite shelving material that is cut into 180 mm square tiles. The rules are available from the USQ web page http://www.usq.edu.au/users/billings/bilby/.

In our 1997 program, sixteen fifteen year olds and others built nine Bilbies similar to that shown in the picture. Since then about another dozen have been built in various forms.

Our electronics consist of a single PCB (now available commercially) with a Basic Stamp one controling two stepper motors (from old disk drives) via a pair of UCN5804 driver chips. Four simple opto-gate sensors are fed via Schmitt Trigger gates to the Stamp chip. This gives effective position feedback. Wheels are standard Meccano. It takes about twelve hours work to build a Bilby and costs about eighty Dollars (Australian)depending upon how much of it you can scrounge. We will be publishing construction details shortly on our own web site. Email: asrgf@alinga.newcastle.edu.au

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