1. Light sensor reading
    The light should shine half on the black and half on the right when taking the reading.

2. Movement
    1 rotation = 360 degrees = 17.2 cm

    (Medium wheel diameter is 5.5 cm >>> R=2.75 cm)
    1 rotation = 2πR = 2π x 2.75 = 17.2 cm

3. A common problem with JC program
    The robot stops when getting to a junction - MUST move a bit forward (70 degrees); otherwise, get stuck on the junction itself.

4. Taking a sensor reading

5. Color sensor   
    Each color read has a number, so we know which object was collected.