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ATmega328P CAN-Bus Controller Node

This project features a general-purpose electronic control board built around the ATmega328P microcontroller, integrated with a MCP2551 CAN transceiver. It is designed for modular sensor integration and robust communication in automotive or industrial "edge" applications.

🚀 Key Features

  • Microcontroller: ATmega328P (8-bit AVR).
  • Communication: CAN-BUS 2.0 protocol via MCP2551.
  • Power Management: On-board L7805 regulator (Supports 7V-12V DC input, provides stable 5V).
  • Clock: External 16MHz crystal oscillator for precise timing.
  • Termination: Integrated 120 Ohm termination resistor for CAN-BUS stability.
  • Design: Through-Hole (THT) components for easy prototyping and soldering.

🛠 Hardware Overview

  • Power Supply: Includes filtering capacitors (C1, C2) for noise reduction.
  • Reset Circuit: 10k Ohm pull-up resistor for stable MCU operation.
  • IO Access: Breakout pins for sensor connectivity.

📁 Project Structure

  • /Project_Files: KiCad schematic (.kicad_sch) and PCB layout (.kicad_pcb).
  • /Gerber: Production-ready files (Gerber + Drill) for manufacturing.
  • /Screenshots: 3D renders and 2D layouts of the board.

📸 Visuals

3D Render

Board 3D View

Schematic

Schematic View

📝 Future Improvements

  • Switching to SMD components for a more compact footprint.
  • Adding status LEDs for Power and CAN traffic.

About

ATmega328P based CAN-Bus node with MCP2551 transceiver and 12V-to-5V power regulation for industrial/automotive sensor applications.

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