ch3p4ll3 / esp-gear-indicator

A gear indicator for your car that interfaces with a bluetooth OBD-II adapter

ESP Gear Indicator

A gear indicator for your ESP-32 to use in your car.

Overview

This project aims to create a gear indicator using an ESP-32 microcontroller. The gear indicator displays the current gear of the car on an Matrix LED display, providing real-time information.

The project is developed using PlatformIO, an open-source ecosystem for IoT development with a focus on embedded systems.

Features

• Displays the current gear of the motorcycle on an matrix display.
• Supports up to 5 gears (1 to 5) and a neutral indicator. (can easly be configured for >=6 gears)
• Configurable gear ratios for different motorcycle models.

Hardware Requirements

• ESP-32 microcontroller
• MAX72XX LED matrix display (e.g., MAX7219, MAX7221)
• OBD-II Bluetooth adapter

Wiring

Component	GPIO Pin
DIN (Data Input)	GPIO14
CS (Chip Select)	GPIO12
CLK (Clock)	GPIO13

Connect the components as shown in the table above.

You can also use other pins by editing the pins from the config.h file

Installation

• Clone the repository: git clone https://github.com/ch3p4ll3/esp-gear-indicator.git

• Open the project in PlatformIO IDE or Visual Studio Code with PlatformIO extension installed.

• Connect the ESP32 microcontroller, MAX72XX display following the wiring instructions.

• Adjust the settings

• Build and upload the firmware to the ESP32 microcontroller.

• Once uploaded, the gear indicator should start displaying the current gear on the MAX72XX LED matrix display.

Configuration

Edit config.h to adjust settings such as GPIO pin configurations, gear ratios, display settings, etc.

Future Features

• Automatic Calibration: Implement a feature where the gear indicator can calibrate itself autonomously without the need to specify any gear range. This will enhance user convenience and simplify the setup process.
• Support for Reverse Gear: Add support for detecting and displaying the reverse gear on the MAX72XX LED matrix display, providing comprehensive gear information.
• Additional Customization Options: Explore options to customize the display format, add animation effects, or integrate with other systems for enhanced functionality.

Contributing

Contributions are welcome! Please feel free to submit pull requests, open issues, or suggest improvements.