Hargrave Technologies

Hargrave Technologies is an Australian power electronics engineering company specialising in the professional design and manufacturing of NDAA compliant electronic speed controllers (ESCs) which are essential for driving brushless electric motors using various power sources.

Drawing on over a decade of experience in the aerospace and defense sectors, the company’s drone ESCs are essential for driving brushless electric motors in a variety of multirotor, fixed-wing and VTOL drone platforms. Hargrave Technologies ESCs are currently operating in over 50 countries and have been integrated into more than 10,000 aircraft.

Hargrave Technologies products have played a critical role in ensuring success for customers in a wide range of missions and use cases.

The company’s accomplishments include:

• Delivering exceptional performance and reliability
• Gaining recognition for industry-leading ESCs in commercial and defence aerospace markets
• Offering cutting-edge solutions for the automotive and space industries

Hargrave Technologies’ off-the-shelf solutions meet a broad range of immediate requirements, and are designed and manufactured from the ground up in-house at its facilities in Australia, providing end-to-end control over the full lifecycle for maximum quality.

The company’s highly skilled engineering team also excels in developing variants or creating bespoke designs to suit the unique needs of customers. From electronics to software, tailored solutions can be implemented within weeks not months.

Learn more: Drone Motor Controllers >

GateKEEPER Technology

At the heart of the company’s technology is GateKEEPER, a unified technology platform that underpins the next generation of drone motor controllers.

Key features include:

• Proven motor control architecture with advanced proprietary algorithms, combining the low-speed efficiency of FOC with the high-speed performance of trapezoidal drive
• Robust performance and high reliability that Hargrave Technologies is known for on any integrated inverter
• Bespoke controllers can now be derived from the same flight-tested platform as the company’s COTS offerings
• Supports a new generation of wide bandgap semiconductor technologies including Silicon Carbide and Gallium Nitride bridges
• Compatible with any flight controller that supports DroneCAN, PWM or Dshot

Drone Motor Controllers & Drone ESCs

microDRIVE LP

Compact and lightweight IP67-rated ESC for drone motor control

microDRIVE LP is Hargrave Technologies’ smallest and lightest drone motor controller, designed from the ground up around the DroneCAN specification for easy integration into UAV platforms and deployment at scale. The versatile ESC enables you to choose between the company’s groundbreaking high-efficiency FOCAL or rapid-response trapezoidal drive algorithms, allowing you to tailor the solution to your specific needs.

Users can configure over 60 parameters and update firmware from the flight computer. Real-time telemetry allows you to monitor and capture critical data such as current, voltage and RPM, ensuring that issues can be spotted before serious problems occur. microDRIVE LP also provides a host of other advanced features including error-correcting memory, onboard diagnostics, and high-speed circular data logging with storage for up to 72 hours.

The rugged motor controller is IP67-rated for operation in harsh environments, and can be optionally provided as a fully NDAA-compliant product for U.S. government and defense applications.

microDRIVE MP

High-current motor controller for medium VTOL platforms

The microDRIVE MP is Hargrave Technologies’ medium-power motor controller, delivering 60 V / 120 A performance for medium VTOL aircraft, loitering munitions, and uncrewed underwater vehicles that require sustained propulsion output in demanding operating conditions.

Combining continuous 120 A phase current capability with selectable control modes, microDRIVE MP allows users to choose between Hargrave’s high-efficiency FOCAL algorithm and a rapid-response trapezoidal drive profile. Integrated temperature sensing, multiple Hall-effect inputs, and an optional motor sense cable enable advanced functionality such as propeller parking and active thermal protection.

nanoDRIVE 4LPi

NDAA-compliant 4-in-1 ESC for high-volume UAS production

The nanoDRIVE 4LPi is a compact, NDAA-compliant ESC designed for high-volume UAS production. It features pre-soldered capacitors, a 5V auxiliary power supply, standard 30×30 mounting, and machine-mount capability for streamlined assembly.

Powered by Hargrave’s GateKEEPER core, it supports DroneCAN, ARINC825, DShot, and PWM protocols with over 60 configurable parameters. A dual-input priority system ensures reliable signal redundancy, while firmware updates via the flight computer enable mission-specific tuning.

Modular Smart Power Supplies for UAS

microFLUX 4LP

Lightweight and NDAA-compliant four-channel smart power supply

The microFLUX 4LP is a lightweight, NDAA-compliant smart power supply delivering configurable, reliable power for UAS. It features four hardware-defined low- or high-voltage channels, each with digitally selectable output levels within its range. Channel configurations are set per variant, enabling tailored integration for specific aircraft designs. With full DroneCAN support, the unit provides real-time visibility into voltage, current, and power usage, giving operators detailed system insight during operation.

The microFLUX 4LP offers a modular foundation for scalable UAS power architecture. Built in Australia from Western-sourced components, it combines supply chain assurance with proven performance. The unit operates from 15–60 V, delivers up to 8 A per channel, and maintains stable functionality between -20°C and 50°C.

microFLUX 2MP

High-current, NDAA-compliant dual-channel smart power supply

The microFLUX 2MP is a compact, high-current smart power supply delivering configurable, reliable power for UAS. It features two independently configurable output channels with digitally selectable voltage levels from 3.3 V to 28 V, enabling software-defined power delivery without hardware changes. With full DroneCAN support, the unit provides real-time visibility into voltage, current, and system status, supporting informed operational monitoring of mission-critical avionics and payloads.

Built using Western-sourced components and designed to meet NDAA compliance requirements, the microFLUX 2MP prioritises supply chain assurance and integration flexibility. Operating from a 15 to 60 V input range, it delivers up to 20 A continuous current per channel within the same compact footprint as the microFLUX 4LP, while maintaining stable performance between -20°C and 50°C.

Bespoke Drone Motor Control & Power Solutions

In addition to off-the-shelf solutions, Hargrave Technologies provides end-to-end consultancy for electronics projects, covering the entire lifecycle including requirements specification, prototyping, testing, manufacturing, and certification.

The company’s expertise is not limited to motor control systems – Hargrave Technologies also creates bespoke solutions for demanding powertrain applications, as well as for battery management, DC-DC conversion and solar maximum power point tracking.

If you have a custom project in mind that requires an expert and specialised approach, get in touch to find out how Hargrave Technologies can help.