Top View (Component Side)	Bottom View

The Mazduino WBO is a Fork of the original Wideband Oxygen sensor controller designed to work with the rusEFI ecosystem. This project is specifically redesigned with components that are easier to manually assemble and uses economical Molex connectors to reduce cost while maintaining functionality.

The Mazduino WBO provides accurate air-fuel ratio (AFR) monitoring for engine tuning and performance optimization. This module communicates with your ECU via CAN bus, enabling real-time AFR data transmission for precise fuel management. It's designed to be a cost-effective solution for DIY engine management enthusiasts who want reliable wideband oxygen sensor control.

• CAN Bus Communication: Communicates with ECU via CAN bus for real-time AFR data transmission
• Multiple LSU Sensor Support: Compatible with LSU 4.2, LSU 4.9, and LSU 4.9 Adv sensors
• Easy Manual Assembly: Redesigned with components that are straightforward to solder and assemble by hand
• Economical Connectors: Uses cost-effective Molex connectors instead of expensive alternatives
• rusEFI Compatible: Fully compatible with the rusEFI ecosystem for seamless integration
• Open Source: Complete schematics, PCB design files, and firmware available
• Proven Design: Based on the reliable mck1117/wideband controller

• Initial release with improved component selection for manual assembly
• Cost-optimized Molex connector implementation
• Supports LSU 4.2, LSU 4.9, and LSU 4.9 Adv sensors (tested and verified with LSU 4.9)
• Complete gerber files and assembly documentation included
• Interactive BOM: View Interactive Bill of Materials

This project uses the rusEFI WBO F0 firmware, which provides:

• Accurate AFR readings
• CAN bus communication
• Calibration and diagnostic features

Firmware Source: rusEFI WBO F0 Implementation

• Mazduino WBO PCB (v1.0 or later)
• Wideband oxygen sensor: Supports LSU 4.2, LSU 4.9, and LSU 4.9 Adv (tested with LSU 4.9)
• 12V power supply
• CAN bus connection to ECU (primary communication method)

The Mazduino WBO uses a Molex 2x6 connector for easy assembly and cost-effective connections.

Row 1 (Top) and Row 2 (Bottom) of the Molex 2x6 connector

1. Follow the assembly guide in the v1/ directory
2. Refer to the BOM (Bill of Materials) for required components
3. Use the Interactive BOM for easy component identification and placement
4. Use the provided schematics for proper component placement

1. Download the rusEFI WBO F0 firmware from the official repository
2. Flash the firmware using your preferred STM32 programming tool
3. Configure the controller according to your sensor specifications

Mazduino-WBO/
├── README.md           # This file
└── v1/                 # Version 1.0 files
    ├── Readme.md       # Version-specific documentation
    ├── Schematics.pdf  # Circuit schematics
    └── gerber/         # PCB manufacturing files
        ├── bom.csv             # Bill of materials
        ├── designators.csv     # Component designators
        ├── netlist.ipc         # Net list file
        ├── positions.csv       # Component positions
        └── rusEFI-WBO.zip     # Complete gerber package

This project is a fork of the excellent work by mck1117 on the original wideband controller. The Mazduino variant focuses on improving manufacturability and reducing cost while maintaining the proven functionality of the original design.

• Original Wideband Controller: https://github.com/mck1117/wideband
• rusEFI Project: https://github.com/rusefi/rusefi
• Mazduino ECU Family: See main project directory for other Mazduino variants

Contributions are welcome! Please feel free to submit issues, feature requests, or pull requests to improve the Mazduino WBO design.

This project follows the same license terms as the original wideband controller project.

• Official Website: https://www.mazduino.com
• Documentation & WIKI: https://wiki.mazduino.com
• rusEFI Community: https://rusefi.com/forum/

For questions or support, please visit the Mazduino community forums or create an issue in this repository.