Digital Technologies – SS2 – Robot Design II (Line-Following Robot) – Questions with Answers and Explanations

A suitable width for the line on a school robot track is about

A. 1-2 mm
B. 5 mm
C. 18-25 mm
D. 100 mm

For best results with a TCRT5000 module, the sensor face should be mounted about

A. 30-60 cm above the track
B. 10 cm above the track
C. 0 mm, dragging along the surface
D. 3-6 mm above the track

After assembly, one wheel turns in the wrong direction. The simplest hardware fix is to

A. replace the castor wheel
B. raise the sensor height
C. connect the motor to the 3.3 V pin
D. swap the two wires of that motor