
Robot Magic: Beginner Robotics for the Maker and Magician 143
first hole in the row, so that the round top is showing
on the front side and the edge is flush to the back of
the cardboard (Figure
10
).
Before inserting the next LED, we have a few very
important things to pay attention to in order for the
whole project to work smoothly:
• First, notice how each LED has two wires, one slightly ...