Variobot varikabi Instructions Manual page 55

3) Sensors
Bend the connecting wires of the 3 sensors apart
as shown below. Align them according to the hole
spacing on the breadboard as follows:
The connections of the middle sensor should be
about 2 hole spacings apart, and those of the side
sensors approximately 5 hole spacings apart.
Pay attention to the correct polarity of the
sensors. The + side has a shorter lead
and a flat side on the housing.
Insert the middle sensor into rows 4 and 6 directly
in front of the resistor on the breadboard, ensuring
the shorter lead is on the left side.
Then insert the outer sensors, correctly polarized,
into rows + and 4, and 6 and -, respectively, on
the breadboard. The outer connections should be
inserted directly behind the respective transistor.
Finally, bend the two outer sensors downwards by
hand until they are inclined at approximately a 30-
degree angle to the ground.