- One minute will be allowed for setup and calibration before
- The robot must fit within the 18 x 18 cm starting box (no
- The maximum number of motors is two.
- The maximum number of line sensors is two.
- The robot must start with its sensors at the beginning of
the outer line.
- The team operator is only allowed to place the robot on the
board and to push its starting button when told to do so.
- The judge will time the robot.
- If the robot leaves the line it will be given 3 chances (line
crossings) to reconnect by itself within one vehicle length
(~ 18 cm) of leaving the line. (The judge's decision on 'loss-of-line'
- Each robot will be given two official trials at the line and
the shortest time will be recorded.
- The robot finishing the path in the shortest time will be
- If two or more robots finish within 2 seconds, or no robots
finish a run off will be declared between the best entries.
- The board is a 4 x 4 foot white enamel masonite board, the same material
as used in Botball.
- The board is edged with 1x2" pine furring strips (only needed for protection
and for the Line Running Challenge).
- The lines are made with standard 19 mm (3/4" black electrician's tape
except for the two lines in the center, which are light green paper, attached
with scotch tape. In some places the tape may be two layers thick (where
- The two centered lines are 21.6 cm long and 5 cm apart .
- The sharp curves are 7.6 cm radius and broader curves are 15.2 cm radius
on the inside edges.
- The inner area is 64 cm x 64 cm and the space between parallel lines is
- The circled numbers are not on the board, but identify the reference lines
for the line running competition.
- The two starting boxes are 18 cm x 18 cm and 10 cm apart, equally spaced
with one edge on the inner edge of the outside straight line.
- Suggested method for accurate line layout: Measure and draw the inside
edges of the tape as two concentric boxes on the board, then use a compass
to draw the curves. Finally, lay the tape along the marked edges, taking
care to not stretch the tape, as it tends to shrink back to its unstretched
- You should try to make the board lighting as uniform as possible, but
the entrants are responsible for calibrating out the local lighting effects
on their sensors.
Sharing the Results:
If you would like to share the results of your runs or competition, please feel
free to send Terry Grant with
your data and other information regarding the challenge, or if you have any
questions about what to send.