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Lesson 34: TT Motor

In this lesson, you will learn how to control the speed and direction of a motor using a Raspberry Pi. You’ll learn how to program the Raspberry Pi to run the motor at different speeds and in both forward and backward directions. The project will involve setting the motor speed, running it for a specified duration, and then stopping it. This exercise is a practical introduction to motor control with the Raspberry Pi, offering a clear and straightforward experience in hardware control and Python programming, suitable for beginners.

Required Components

In this project, we need the following components.

It’s definitely convenient to buy a whole kit, here’s the link:

Name	ITEMS IN THIS KIT	LINK
Universal Maker Sensor Kit	94	Universal Maker Sensor Kit

You can also buy them separately from the links below.

Component Introduction	Purchase Link
Raspberry Pi 5	BUY
TT Motor	-
L9110 Motor Driver Module	-

Wiring

Code

from gpiozero import Motor
from time import sleep

# Define motor pins
motor = Motor(forward=17, backward=27)  # Using Raspberry Pi GPIO pin numbers

# Run the motor forward at half speed
motor.forward(speed=0.5)  # Set motor speed, range is 0 to 1
sleep(5)                  # Run the motor for 5 seconds

# Increase to full speed forward
motor.forward(speed=1)    # Set motor speed, range is 0 to 1
sleep(5)                  # Run the motor for 5 seconds

# Run the motor backward at full speed
motor.backward(speed=1)   # Set motor speed, range is 0 to 1
sleep(5)                  # Run the motor for 5 seconds

# Stop the motor
motor.stop()

Code Analysis

Import Libraries

Import the Motor class from gpiozero for motor control, and sleep from time for timing control.
```
from gpiozero import Motor
from time import sleep
```
Define Motor Pins

Create a Motor object to control a motor connected to GPIO pins 17 and 27 for forward and backward movements, respectively.
```
motor = Motor(forward=17, backward=27)
```
Run the Motor Forward at Half Speed

The motor is run forward at half speed (speed=0.5) for 5 seconds. The speed range is between 0 (stopped) and 1 (full speed).
```
motor.forward(speed=0.5)
sleep(5)
```
Increase to Full Speed Forward

Increase the motor speed to full speed (speed=1) in the forward direction, running for another 5 seconds.
```
motor.forward(speed=1)
sleep(5)
```
Run the Motor Backward at Full Speed

The motor is then run backward at full speed for 5 seconds.
```
motor.backward(speed=1)
sleep(5)
```
Stop the Motor

Finally, stop the motor using the stop method.
```
motor.stop()
```