fischertechnik ROBOTICS Mini Bots, Activity Booklet, Page: 10 / 15

Mini Bots
ROBOTICS
10
Trail Searcher
DIP switch setting:
On the trail searcher model a further sensor, the trail sensor,
is attached in addition to the two mini-switches acting as
sensors on the two bumpers. With the aid of the trail
sensor the Mini Bot trail searcher can follow a trail in
the form of a black line.
The mini-switches as sensors on the two bumpers
serve for recognition of hindrances located along the
black trail. If one of the two mini-switches is tripped by
hitting against an obstacle, the Mini Bot trail searcher moves
back, makes a deviating motion and then continues to move forward
again while it looks for the black trail.
An obstacle course is included in the construction set. A black trail is
printed on it, which you can use for this model. For this purpose place
the Mini Bot trail searcher in the middle of the obstacle course and
switch on the power supply on the battery tray. The Mini Bot then moves
forward in a spiral until it finds the black trail, which it then follows.
However you can also draw a trail on a large sheet of white paper with a
black marker. This black trail should be at least 20 mm wide for the trail
sensor to work properly.
Hindrance Detector with Trail Sensor
DIP switch setting:
As the name of this Mini Bot suggests, it is an upgraded version of
the hindrance detector model with a trail sensor.
The mini-switches on the two bumpers serve as sensors
and the potentiometer has the same function as on the
Mini Bot hindrance detector.
The trail sensor on this model is an additional sensor
for recognition of hindrances in the form of a black line.
If the trail sensor recognizes a black line, the Mini Bot
also moves back, deviates by turning and then continues