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Your robotβs basic circuit consists of an electric cell (2 x AA batteries), motor, sensor switch and conducting wires to carry the electric current. Scroll down to see how each of the circuit components is added to create your first basic circuit assembly.
The first thing added to the circuit assembly is the cell. To simplify the whole diagram, only one cell symbol is shown on the circuit diagram. Notice how each of the cell's terminals are represented. The positive terminal is shown using a short line while the negative terminal is shown using a longer line.
Use the switch to open and close the circuit. The on/off switch on your robot's power supply is a good example. It either closes the circuit to allow the flow of electricity from the cell to the motor or breaks the flow when opened.
The symbol of a circled 'M' is used to represent the motor, the third and last component of the circuit assembly.
Now you have completed Lesson 1
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