EdVenture 4 – Line tracking
Meet the
holy grail
of enthusiast robotics; line tracking. Line tracking is a very popular
robotics activity as it’s fun to watch the robot go around and around a track. See how many
people ask you
“Is that line magnetic?”
This barcode activates
Edison’s line tracking program. The program uses Edison’s line
tracking sensor and motors to follow the edge of a black line.
Reading the barcode
1. Place Edison facing the barcode on the right side
2. Press the record (round) button 3 times
3. Edison will drive forward and scan the barcode
What to do
The first thing you need is a line. You can
print the small track on the next page, print
the large A1 (84cm x 59cm) EdMat from
meetedison.com/downloads
or make your
own using black electrical tape on a white
table (the line must be 1.5cm/0.6in thick).
Place Edison to one side of your line, so that
the line tracking sensor is on white. Now
press the play (triangle) button and watch
Edison follow the line.
EdFact
Edison’s line tracking sensor shines light on the surface and then measures the amount of
light that is reflected back. White reflects a lot of light, giving a high light reading and black
reflects very little, giving a low light reading.
To track the line Edison is in a constant state of dissatisfaction. When he is off the line, he
turns right to get on the line. But when he’s on the line, he turns left to get off the line. This
results in him waddling on the edge of the line.
Barcode
– Line tracking
Summary of Contents for Edison Robot V2.0
Page 10: ......
