The powerful, compact core for your custom rusEFI engine management system.
The AlphaECU Brainboard is a professional-grade ECU daughterboard designed for developers and enthusiasts building custom engine control hardware. Powered by the STM32F407 MCU, this board integrates the essential "heavy lifting" of an ECU—power regulation and analog conditioning—leaving the high-current output stages to your specific carrier board or external drivers.
Integrated Features
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MCU Performance: STM32F407 processor, fully compatible with the open-source rusEFI firmware ecosystem.1
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Onboard Power Management: Integrated power supply conditioning to provide stable logic voltage in noisy automotive environments.
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Conditioned Analog Inputs: Dedicated, filtered inputs for critical sensors:
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CLT & IAT: Temperature-compensated and filtered for accuracy.
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TPS, O2, & MAP: High-impedance inputs ready for standard automotive sensors.
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Raw Logic I/O: Unconditioned signals are broken out for direct control of external ignition coils, fuel injectors, and idle valves.
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Expansion Ready: Dedicated pins for external signal conditioners, perfectly suited for the AlphaECU Hall Conditioner or MAX9924 VR Board.
Why Choose the AlphaECU Brainboard?
Instead of reinventing the wheel with MCU traces and power filtering, the Brainboard allows you to focus on your specific vehicle's pinout and power stages. Its small form factor makes it ideal for "plug-and-play" ECU retrofits or ultra-compact custom builds.
Technical Specifications
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Microcontroller: STM32F407 (168 MHz Cortex-M4)
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Firmware Support: rusEFI
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Connectivity: High-density pin headers for motherboard integration
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Analog Inputs: 5 Conditioned (CLT, IAT, TPS, O2, MAP), other exposed
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Digital I/O: Raw logic signals for Injection/Ignition control