Open-source stack
SensWear is described as fully open-source, with hardware, firmware (Zephyr), and software released under the MIT license. That makes the platform suitable for users who want to inspect, modify, and extend the stack.
SensWear
SensWear is an open-source wearable development platform for custom devices, with modular hardware, raw sensor access, BLE connectivity, and SDK support.
Overview
SensWear is an open-source wearable development platform for researchers, developers, engineers, and innovators who want to build custom wearable devices rather than use a closed consumer product. The site describes the platform as modular, form-factor agnostic, and AI-ready, with support for smart rings, patches, and other wearable prototypes.
At the center of the system is a main board that provides wireless connectivity, embedded processing, battery management, motion sensing, and a standardized I²C expansion interface for daughter boards. The product pages and specification page show support for raw data access, BLE data streaming, local recording, and programmable sensing or feedback modules such as PPG, touch, temperature, LED, and vibration.
SensWear also provides SDK examples in Python and TypeScript, plus Android and iOS mobile app support for streaming and testing. The combination of open hardware, firmware, and software is intended for reproducible research, rapid prototyping, and custom wearable experimentation.
Key features
Raw sensor access
The platform exposes raw sensor data rather than only processed metrics, which is useful for research, signal analysis, and custom model development. The specification page says raw PPG, inertial, touch, and temperature data can be streamed over BLE and recorded locally.
Modular expansion bus
The platform uses a modular architecture centered on a main board for compute and wireless, with daughter boards connected through an I²C expansion bus. The home page says users can use custom-built or pre-built daughter boards for peripherals.
Cross-platform software support
SensWear supports Android and iOS mobile applications for data streaming and testing. The site also shows Python and TypeScript SDK examples for streaming acceleration and orientation data.
Integrated core controller
The main board page identifies onboard power and sensing components including the nRF54L15, BHI360 IMU, BQ25180 charger/power-path IC, BQ27427 fuel gauge, TPSM83102 regulator, and LP5562 LED driver. This concentrates compute, sensing, battery management, and feedback in the core board.
Sensing and actuation modules
The specification page lists both sensing and actuation modules, including PPG, touch, temperature, LED, and vibration, so the platform can be used for input, measurement, feedback, and notification workflows.
Common use cases
Custom wearable prototyping
Use the platform to build a wearable prototype that needs a compute-and-connect core plus sensor add-ons, such as a smart ring or patch. The modular main board and daughter-board approach is designed for rapid iteration on form factor and sensing mix.
Research and data collection
Use raw PPG, IMU, touch, or temperature streams for signal processing, model development, and offline analysis. The specification page notes that raw data can be streamed over BLE and recorded locally for offline processing.
Interaction and feedback experiments
Use the platform to test interaction concepts such as on-skin UI, gesture input, notification feedback, or haptic cues. The specification page lists touch, LED, and vibration modules for input and feedback workflows.
Wearable system integration
Use the main board as the core controller for a wearable system that needs battery charging, fuel gauging, regulated power, and wireless communication in one module. This is relevant when building continuous-sensing devices that need stable power handling.
Developer debugging and validation
Use the SDK examples and mobile apps to stream data, inspect signals, and validate firmware behavior during development. The site shows Python and TypeScript examples as well as Android and iOS support for testing.
Pros and Cons
Pros
- Open-source hardware, firmware, and software are all described on the site, which supports inspection and modification.
- The platform provides raw access to sensor data, which is useful for research and custom analysis.
- The modular main-board-plus-daughter-board design makes it possible to add sensing or actuation modules without redesigning the core system.
- Python and TypeScript SDK examples are shown, which gives developers a starting point for prototyping.
- Android and iOS mobile app support is mentioned for streaming and testing.
Cons
- Pricing information is not published on the site, and the /pricing page returns a 404 page not found.
- The main board is shown as sold out on the product page, so immediate purchase availability may be limited.
- The public evidence only clearly confirms a few modules and examples; detailed documentation for every board and workflow is not visible in the collected pages.
FAQ
What does SensWear connect to and how is data used?
SensWear is positioned as an open-source wearable development platform, and the site shows its own mobile apps and SDKs for data streaming and testing. The mainboard page also describes BLE connectivity for data streaming, configuration, and firmware updates.
Can I access raw sensor data?
The site says SensWear provides access to raw data for AI/ML, signal processing, and sensing, with support for streaming and local recording of sensor data for offline processing.
Does SensWear support mobile apps?
The home page states that SensWear supports Android and iOS mobile applications for data streaming and testing.
What hardware modules are available?
The home page and product pages show the platform is modular, with a main board and daughter boards such as PPG, touch, and temperature modules. The specification page also lists vibration as an actuator.
Is pricing or availability clearly listed?
The pricing page is not available and the home page does not show pricing details. The main board page shows the product as out of stock, so availability may vary by module.
Quick Facts
- Category
- Open-source wearable development platform
- Primary users
- Researchers, developers, engineers, and innovators
- Core stack
- Hardware, firmware (Zephyr), and software under the MIT license
- Connectivity
- BLE
- Architecture
- Main board plus I²C-connected daughter boards
- Availability
- Main board page shows sold out; pricing page is not available
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