Page 21 - Robo_Genius_V1.0_flipbook_C8

Circuit Operation

When the switch is in the ON position, it completes the circuit, allowing electricity to flow from the
battery source through the switch and the LED. Pins 1 and 2 of the switch are connected, as well as
pins 4 and 5. This causes the LED to light up. When the switch is turned OFF, it breaks the circuit,
stopping the flow of electricity and turning off the LED.

Concept

This activity demonstrates the basic science behind electrical circuits. It shows how electricity flows
in a closed circuit when the switch is turned on, allowing the LED to light up. This activity also
introduce the basic binary concept of ON (1) and OFF (0), which related to early computer logic or
switches in circuits.

Observation

Students will observe that when the switch is turned ON, it completes the circuit, allowing the
flow of electricity, causing the LED to light up. When the switch is turned OFF, the circuit breaks,
stopping the flow of electricity, and the LED turns off.

Application

Lighting Control: Switches are commonly used to control the lighting
in homes, offices, and public spaces.

Troubleshooting Tips

1. Check if the LED is properly connected to the breadboard.

2. Ensure the switch is securely connected and making good contact.

3. Check for any loose or disconnected wires in the circuit.

Variable Resistors

Potentiometer
A potentiometer is like a volume knob that controls the flow of
Wiper
electricity in a circuit.
It has three terminals: one for input, one for output, and one for Gnd Vcc
adjustment. Potentiometer
By turning the knob, we change the resistance between the input and output terminals.

Electronics with Breadboard-Based Kit 19