Week 4: ESP32 & MPU6050 Displacement Measurement

Objective

To utilize an ESP32 microcontroller and MPU6050 accelerometer to accurately measure linear displacement by integrating acceleration data in real-time.

Features of ESP32

• Integrated Wi-Fi and Bluetooth: Enables seamless wireless communication.
• Low Power Consumption: Supports various sleep modes for energy efficiency.
• Multiple I/O and Peripheral Support: Supports ADC, DAC, PWM, SPI, I2C, and more.

Components

• ESP32: Microcontroller for processing accelerometer data.
• MPU6050 Accelerometer: Measures acceleration in X, Y, and Z directions.

Connections (Virtual Wiring)

MPU6050 to ESP32 connections:

• SDA → GPIO 21
• SCL → GPIO 22
• VCC → 3.3V
• GND → GND

Code

from machine import I2C, Pin
from time import sleep
import math

# Initialize I2C interface for ESP32
i2c = I2C(0, scl=Pin(22), sda=Pin(21), freq=400000)
MPU_ADDR = 0x68

# Initialize MPU6050
def init_mpu():
    i2c.writeto_mem(MPU_ADDR, 0x6B, b'\x00')
    

Simulation Steps

1. Open Wokwi and create a new project.
2. Add ESP32 and MPU6050 components.
3. Connect the wires as per the wiring diagram.
4. Upload the provided MicroPython code.
5. Run the simulation and observe results.

Images

Conclusion

This project demonstrates how an ESP32 microcontroller and an MPU6050 accelerometer can be used to measure displacement by integrating acceleration data.