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Lesson 34: TT Motor

In this lesson, you will learn how to control a motor using an Arduino Uno R3 or R4 and an L9110 motor control board. We’ll cover defining motor pins and setting their speed through programming. This tutorial will walk you through the process of connecting and controlling a motor, demonstrating the basic principles of motor operation and control in Arduino projects. Geared towards beginners, this lesson provides a hands-on approach to understanding output operations on the Arduino platform.

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
Arduino UNO R3 or R4	BUY
TT Motor	-
L9110 Motor Driver Module	-

Wiring

../_images/Lesson_34_tt_motor_uno_bb.png

Code

Code Analysis

The first part of the code defines the motor control pins. These are connected to the L9110 motor control board.
```
// Define the motor pins
const int motorB_1A = 9;
const int motorB_2A = 10;
```
The setup() function initializes the motor control pins as output using the pinMode() function. Then it uses analogWrite() to set the speed of the motor. The value passed to analogWrite() can range from 0 (off) to 255 (full speed). A delay() function is then used to pause the code for 5000 milliseconds (or 5 seconds), after which the motor speed is set to 0 (off).
```
void setup() {
  pinMode(motorB_1A, OUTPUT);  // set motor pin 1 as output
  pinMode(motorB_2A, OUTPUT);  // set motor pin 2 as output

  analogWrite(motorB_1A, 255);  // set motor speed (0-255)
  analogWrite(motorB_2A, 0);

  delay(5000);

  analogWrite(motorB_1A, 0);
  analogWrite(motorB_2A, 0);
}
```