DASH FREE 99 is our latest
kit for making a robot to enter the schools micromouse
competition. It can be used to make a reasonably fast
machine to follow the standard rectangular course made
from 50 mm wide white masking tape on a black background.
The DASH FREE 99 kit was used by the top
three in the schools' standard national competition in
In the kit there is a tested assembly
of two fairly powerful DC motors with worm gear drives to
wheels. This assembly is ready to use and avoids the
problem that some entrants will have in making
The kit also contains two Hamamatsu
S4282-51 photo-ICs. These are very clever devices that
have everything needed for a modulated-light digital
sensor except for an LED. The kit includes bright red
LEDs to shine down on the course. The photo-ICs respond
to the light reflected from the course and, when
correctly set up, will give a reliable on/off signal
corresponding to the light reflected from the tape or the
background. These sensors are unaffected by ambient light
and will even run with direct sunlight and shadow on the
The rest of the kit is a simple
electronics circuit to switch the speeds of the motors
according to the sensor outputs. For further details of
the system see ALGORITHM.
We do not supply a PCB or stripboard.
Neither do we supply batteries, wire or solder. You will
have to design your own layout of the components and
batteries. Good weight distribution and ideal positioning
of the sensors will enable your version of the kit to
achieve lap times of under 10 seconds. Some details of
how to make your DASH FREE 99 kit faster
are shown here.
A gallery of
We also supply various bits and pieces
to make building micromice easier both for the
schools competition and the complex maze-solving
here for details.
Musings on the
new corner-to-corner competition.
We also have some technical
here for details.
For a list of sites that we have found