Introduction

This experiment demonstrates how to use the ESP32 to control the speed of a DC motor using Pulse Width Modulation (PWM).

Materials Required

• ESP32 Development Board
• DC Motor
• Motor Driver (e.g., L298N)
• Power Supply
• Breadboard and jumper wires
• Arduino IDE

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Circuit Diagram

The following diagram shows how to connect the motor driver and DC motor to the ESP32:

Steps for the Experiment

1. Connect the motor and motor driver to the ESP32 according to the circuit diagram.
2. Write a program to generate a PWM signal on a GPIO pin to control the motor speed.
3. Upload the program to the ESP32 and connect the motor to the power supply.
4. Observe the motor speed change according to the PWM signal.

Explanation

The ESP32 generates a PWM signal that controls the motor driver's input, which in turn controls the motor's speed. By adjusting the duty cycle of the PWM signal, the motor's speed can be varied.

Results and Observations

• The DC motor should change speed as the PWM signal duty cycle is modified in the code.