STMicroelectronics SensorTile miniature multisensor module

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STMicroelectronics’ 13.5 x 13.5 mm SensorTile is said to be the smallest turnkey sensor board of its type, containing a MEMS accelerometer, gyroscope, magnetometer, pressure sensor and MEMS microphone. With the onboard low-power STM32L4 microcontroller, it can be used as a sensing and connectivity hub for developing products such as wearables, gaming accessories and smart home or IoT devices.

The product has a complete Bluetooth Low-Energy transceiver, including a miniature single-chip balun onboard, as well as a broad set of system interfaces that support use as a sensor fusion hub or as a platform for firmware development. It can be plugged into a host board and, when powered, it immediately starts streaming inertial, audio and environmental data to ST’s BlueMS smartphone app.

Software development is fast and easy due to a vast ecosystem of API based on the STM32Cube Hardware Abstraction Layer and middleware components, including the STM32 Open Development Environment. The system is fully compatible with the Open Software eXpansion Libraries, as well as many third-party embedded sensing and voice-processing projects.

The complete kit includes a cradle board, which carries the core system in standalone or hub mode and can be used as a reference design. This compact yet fully loaded board contains a humidity and temperature sensor, a micro-SD card socket and a lithium-polymer battery (LiPo) charger. Its simple layout demonstrates how a complete wearable prototype customised with extra functionalities can be designed with the SensorTile core system.

The kit includes an Arduino-like interface that can be plugged into any STM32 Nucleo board to expand developers’ options for system and software development, plus a plastic case that provides a convenient housing for the cradle, SensorTile and battery combination. Also part of the kit is a cradle/expansion board with an analog audio output, a micro-USB connector, a programming cable and a LiPo rechargeable battery.

For more information: www.st.com/sensortile.