Autonomous Tractor ECU

500W power distribution, gigabit networking, and multi-sensor integration, packed into a rugged ECU for autonomous field operation

This start-up builds autonomy software that turns commercial tractors from OEMs into self-driving machines for specialty crop farming, including vineyards, orchards, and citrus groves where a single navigation error can destroy years of growth. Their platform lets a single operator manage an entire fleet from a smartphone, but bringing that software to life in the field requires hardware that can survive harsh agricultural environments while reliably powering and coordinating a complex onboard robotics stack. They needed an ECU capable of distributing high amounts of power, managing high-speed data networking, and integrating multiple sensors across a board built to operate without interruption in the field. All while operating under harsh environmental conditions such as vibration, temperature extremes, dust, and moisture.

This start-up needed a rugged, high-power ECU to anchor the onboard electronics of their autonomous tractor platform.

Digital Design

Networking

High-Power

Manufacturing

Industrial

What We Built

Focus designed and developed the ECU hardware and diagnostics firmware from the ground up. The board delivers over 500W to downstream devices and switches network traffic across multiple physical layers, including Power over Ethernet at gigabit speeds, handling the data demands of a full autonomy stack in real field conditions. Onboard sensing integrates dual IMUs, GNSS, and temperature, current, and voltage channels over I2C and SPI, giving the system continuous awareness of its own state. The diagnostics firmware, written in C/C++17 with CMake and backed by GTest/GMock unit tests, exercises all hardware interfaces and transmits structured status packages over the network. Watchdog management, IMU bring-up using the BNO080 with SHTP transport, and a lightweight serialization layer built on a small-footprint protobuf implementation round out the firmware stack.

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Impact

The ECU enabled reliable autonomous operation in the field and established the hardware foundation for the next safety layer.

500+ W

Power delivered to downstream devices across the full onboard robotics stack

Gbps PoE networking

High-speed traffic switching across multiple physical networking layers

Dual IMU + GNSS + Diagnostics

Multi-sensor integration providing continuous awareness of position, motion, and system state

Autonomous tractors are only as reliable as the electronics coordinating them. This ECU was built to be the foundation everything else depends on.