findMe is an open-source development kit enabling the user to explore the new Bluetooth 6.0 capabilities ranging (distance) and angle of arrival (direction, AoA). The findMe kit consists of a Hub and one or more Tags.

findMe Hub is the infrastructure component providing ranging, AoA, Wi-Fi access and power supply via USB Type-C or rechargeable battery. findMe Tag is a coin-cell operated device containing four inertial and environment sensors, an I2C interface for easy extension, and ranging capability.

The Ultimate Bluetooth 6.0 Playground

Bluetooth is everywhere and a fundamental part of our daily lives. The findMe Tag + Hub combines the core concepts of telemetry, localization, and command & control to address practical challenges in various environments.

For example, in logistics, a crate of avocados in a large warehouse can transmit not only its environmental status but also its precise location. This fusion of real-time position data with sensor telemetry—such as temperature and motion—helps optimize storage conditions, reduce search times, and improve cold chain management. The ability to track goods with centimeter-level accuracy solves common problems related to lost or misplaced inventory and inefficient warehouse operations.

Beyond tracking, the findMe system enables intuitive spatial interactions by capturing directional and movement data from the Tag. A user can control devices—such as turning on a light—simply by pointing or moving the Tag in a specific way. This integration of localization and command functions creates natural, gesture-based control mechanisms, making the platform suitable for smart home applications, industrial automation, and next-generation user interfaces.

Features & Specifications

findMe Hub

• Nordic nRF54L15 BLE SoC
• 4 chip antennas
• Wi-Fi 5 GHz
• Internal or external Wi-Fi antenna
• USB Type-C for power supply, charging and emulated serial port
• LiPo charging controller
• Push button and LED
• Expansion connectors and pads: DTM, SWD, GPIO
• Dimensions: 65 x 65 x 28 mm (2.55 x 2.55 x 1.1 in)

findMe Tag

• Nordic nRF54L15 BLE SoC
• Wire antenna
• Powered by 1x CR2032 coin cell
• Integrated sensors: 6 DoF IMU, earth magnetic field, barometric pressure, temperature, humidity
• Push button and LED
• Expansion connectors and pads: DTM, SWD, GPIO, I2C (Qwiic), UART
• Key fob enclosure

The firmware provided for Tag and Hub is similar, while not all modules are used in both components.

Open Source

We are building a fully open and hackable Bluetooth 6.0 platform. By making the hardware and code transparent, we’re empowering the community to refine localization algorithms and invent use cases we haven’t even dreamed of yet. We are releasing the full source files for both the Hub and the Tag hardware. We are not just releasing PDF schematics; we are releasing the native design files.

• EDA Tool: All designs are created in KiCad, the industry standard for open-source hardware.
• Standard Housing: The PCB is designed to fit into widely available, off-the-shelf plastic enclosures.

Firmware

The provided firmware is built on the Zephyr RTOS ecosystem within the Nordic Connect SDK (NCS).

• Application Logic: The entire application layer (the code that manages sensors, battery, wireless communication and handles data flow) will be provided as Open Source under MIT and Apache 2.0 license. The community can modify, fork, and recompile it using standard free tools (like VS Code, West, GCC).
• The Radio Stack: To ensure regulatory compliance and microsecond-perfect timing for the BLE protocol, we rely on the industry-standard Nordic SoftDevice Controller. While this specific low-level radio library is provided as a binary by the vendor, our firmware creates an open bridge to it, exposing the IQ data to the user.
• Absolutely No Vendor Lock-In: The community is not forced to use any provided proprietary library or tools.

Tools & Algorithms

We aim to deliver a comprehensive software suite to analyze hardware performance and evaluate different positioning strategies.

• Tools: To understand the hardware, we provide a suite of Python scripts to visualize the data, which are also Open Source.
• Ranging & Direction Finding Algorithms: We offer open-source implementations of localization algorithms. We also support proprietary enhanced ranging stacks (provided as binaries by the vendor, subject to a fee). This allows the community to compare differences between implementations and choose the right one that suits their needs.

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