Car Black Box Using UART & I2C Communication (PIC18F4850)

Overview

This project implements a Car Black Box using the PIC18F4850 microcontroller in MPLAB IDE.
Black Boxes are typically used in transportation systems (e.g., airplanes, cars) to log and analyze events for post-accident investigations.
This system continuously monitors and records critical driving parameters and events such as over-speeding for accident analysis.

Objectives

• Monitor and log key events in real time.
• Store event data in non-volatile memory.
• Provide easy data retrieval via UART.
• Interface with sensors and peripherals via I2C.

Hardware Requirements

• PIC18F4850 Microcontroller
• EEPROM (I2C) for data logging
• GPS Module (optional, for location logging)
• UART Interface (PC or Serial Terminal)
• Power Supply (12V → 5V regulated)

Software Requirements

• MPLAB IDE
• XC8 Compiler
• Serial Terminal software (e.g., Tera Term, PuTTY)

Communication Protocols Used

• UART → For serial data transmission and retrieval of event logs.
• I2C → For interfacing with external EEPROM for event storage.