Page 87 - Robo_Genius_V1.0_flipbook_C4

Each button sends a different signal to the servo motor, and the motor moves
to the corresponding angle and stays there until a new signal is received. This

shows how buttons can be used to control the precise movement of a motor.

Application

Students, in a robotic hand, a servo motor plays a key

role in moving the fingers. Each servo motor controls
the movement of a joint, allowing the robotic hand to
open, close, and grip objects with precision. When the

servo motor receives a signal, it moves to a specific
angle, making the fingers bend or straighten.

Combining Sensor to Control the Movement of Motor

Light Sensor

A light sensor detects the brightness in the
environment. It measures the amount of light

present and sends this information to the micro:bit.

Servo Motor

A servo motor is a type of

motor that can move to
a specific angle when given a signal. Unlike regular
motors, which spin continuously, a servo motor is

precise, allowing for controlled movements.

When you combine the light sensor and the servo motor
using the micro:bit, you can create automated systems that react to changes
in light. For example, in an automated shading system, a light sensor detects

how much sunlight is present. If it gets too bright, the micro:bit can signal the
servo motor to lower the shades, blocking the sunlight and keeping the room
cool. As the light level drops, the micro:bit can tell the servo motor to raise the

shades back up.

The micro:bit reads the data from the light sensor, processes it, and then controls
the servo motor based on that information. This system is smart because it

adjusts automatically, making life easier and saving energy by controlling the
shades without any manual effort.

Basic Motor Control and Sensors 85