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Readme.md

Mazduino Lite Edition

Mazduino Lite Edition is a compact ECU designed for 4-cylinder engines with wasted spark ignition or 1-2 cylinder motorcycles with individual ignition control. All configurations support full sequential injection. This lightweight version provides essential engine control features in a smaller form factor.

Mazduino Lite is compatible with firmware from rusEFI and can also be used with Speeduino.
For tuning and configuration, you can use the Tuner Studio software.

Specifications

  • Board Size: 72mm x 74.7mm
  • Connector: 33-pin Automotive Connector
  • Target Application:
    • 4-cylinder engines with full sequential injection and wasted spark ignition
    • 1-cylinder motorcycles with sequential injection and individual ignition control
    • 2-cylinder motorcycles with sequential injection and individual ignition control (Smart Coil/IGBT)

Preview

v0.1

Mazduino Lite v0.1

v0.2

Mazduino Lite v0.2 Top Mazduino Lite v0.2 Bottom

Features

  • Processor/MCU: STM32F407
  • 2 Channel Ignition - Wasted Spark (Smart Coil/Coil On Plug/IGBT for Dumb Coil)
  • 4 Channel Injector outputs - Full Sequential Injection
  • 2 Spare MOSFET for Idle PWM/Boost/VVT/VTEC control
  • Analog Inputs: CLT, IAT, MAP, TPS, O2 sensors
  • Internal Baro Pressure Sensor: Built-in barometric pressure sensor (v0.2+)
  • Digital Inputs: CKP, CMP, VSS, Clutch
  • VR Conditioner Module Support (Dual VR)
  • Low Side Outputs: RPM, FAN, Fuel Pump, Main Relay, AC Compressor
  • Micro SD Card Support for data logging via SPI
  • CANbus Communication support
  • Compact Design - Smaller footprint for space-constrained applications

Downloads

Latest Version (v0.2)

Other Versions

Changelog

v0.2 (Latest - Important IGBT Revision)

  • Critical IGBT Fix: Resolved design error in v0.1 that could prevent IGBT functionality
  • Footprint Change: Updated IGBT footprint from Dpak 252 to d2pak 262 (commonly used for IGBT)
  • Added Internal Baro Pressure Sensor: Built-in barometric pressure sensor for improved engine management
  • Design validation and schematic corrections

v0.1 (Initial Release)

  • Initial design and layout
  • Compact 72mm x 74.7mm form factor
  • 33-pin automotive connector
  • 4-cylinder full sequential injection with wasted spark ignition
  • 2-channel ignition and 4-channel injection
  • Essential analog and digital inputs
  • VR conditioner support
  • CAN bus and SD card support
  • ⚠️ Note: Contains IGBT design issue for dumb coils (resolved in v0.2)
  • Still usable: Works perfectly with Coil on Plug (CoP) or Smart Coil configurations

This documentation will be updated as soon as possible... please wait.