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Vehicle Monitoring with ESP32, GPS, and Accelerometer

Table of Contents

Overview

This project utilizes an ESP32 microcontroller, a GPS module, and a 6-axis accelerometer (GY-521) to monitor and publish real-time data about a moving vehicle. The data includes GPS coordinates, vehicle speed, and filtered accelerometer information.

Components

  • ESP32 DevKit v1: Microcontroller for processing and communication.
  • GPS Module: Provides latitude, longitude, and speed data.
  • GY-521 6-Axis Accelerometer: Measures acceleration and orientation.

Dependencies

Ensure that these libraries are installed in your Arduino IDE.

Setup

  1. Wiring

    • Connect the GPS module and GY-521 accelerometer to the ESP32 using appropriate pins.
    • Refer to the comments in the code for pin configurations.

  2. WiFi Configuration

    • Update the WIFI_SSID and WIFI_PASS variables in the code with your WiFi credentials.

  3. Adafruit IO Setup

    • Create an account on Adafruit IO.
    • Set up feeds for GPS, Speed, and Acceleration.
    • Update the MQTT configuration variables (MQTT_SERVER, MQTT_PORT, MQTT_USERNAME, MQTT_KEY) with your Adafruit IO information.

  4. Upload the Code

    • Upload the modified code to your ESP32 using the Arduino IDE.

Operation

  • The ESP32 reads GPS data, including latitude, longitude, and speed.
  • Accelerometer data is filtered using a complementary filter to obtain accurate pitch and roll.
  • The filtered data (GPS, speed, and accelerometer) is published to Adafruit IO via MQTT.

Data Visualization

  • Monitor your vehicle's data in real-time on the Adafruit IO dashboard.
  • View GPS coordinates, speed, and filtered accelerometer information.

Power Management

  • The code includes a deep sleep mode to minimize power consumption during idle periods.
  • Adjust the sleep duration based on your application's requirements.

Additional Notes

  • This code is a foundation for vehicle monitoring. Customize it based on your specific needs.
  • Refer to the comments in the code for detailed explanations of configurations and adjustments.

Flowchart

graph TD
  subgraph Initialization
    A[Initialize ESP32] -->|Setup WiFi| B[Connect to WiFi]
    B -->|Setup GPS| C[Initialize GPS Module]
    C -->|Setup Accelerometer| D[Initialize MPU6050]
  end

  subgraph Main Loop
    D -->|Read GPS Data| E[Parse GPS Data]
    E -->|Valid GPS Fix| F[Calculate Speed]
    F -->|Read Accelerometer| G[Filter Accelerometer Data]
    G -->|Publish Data| H[Publish to Adafruit IO]
    H -->|Deep Sleep| I[Enter Deep Sleep Mode]
  end

  B -->|Reconnect if Disconnected| B

  style A fill:#86B300
  style B fill:#86B300
  style C fill:#86B300
  style D fill:#86B300
  style E fill:#5DADE2
  style F fill:#5DADE2
  style G fill:#5DADE2
  style H fill:#5DADE2
  style I fill:#EC7063
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