Page 43 - Robo_Genius_V1.0_flipbook_C8

Step 13 Connect the first pin of the third switch to the positive rail and the second pin to the fourth
pin of the RGB LED. Also, take a wire to connect the first five pairs of holes in the positive
rail to the next five.

Pin 1 Pin 2

Circuit Operation

When the switch is turned on, it completes the circuit, allowing electricity to flow to the RGB LED.
The RGB LED emits light, and by adjusting the switch, students can control the color emitted,
creating different mood lighting effects. When the switch is turned off, the circuit is broken, and the
LED turns off.

Concept

The switch plays a key role in completing or breaking the circuit. When the switch is ON, it allows
electricity to flow through the circuit, powering the RGB LED. When the switch is OFF, it breaks the
circuit, cutting off the electricity and turning off the LED. The RGB LED works by mixing red, green,
and blue light in different intensities to create other colors. The combination of these colors in
various proportions can represent any colour in the visible spectrum, which can be related to ratios
and proportions in mathematics.

Observation

Students will observe that when the switch is turned ON, the circuit is completed, and the RGB
LED lights up. By adjusting the switch or controlling the current flow, they will see different colors
emitted by the LED.

Electronics with Breadboard-Based Kit 41