STEVAL-WESU1:Wearable sensor unit reference design for fast time to market

STEVAL-WESU1 is a reference design developed and optimized to help designers implement the latest technologies in wearable and portable applications.

The small form factor of the hardware allows it to be enclosed in a watch strap, so the user can experience a real activity monitoring system and immediately begin appreciating the sensor data acquisition, as well as all of the embedded hardware and firmware features, also thanks to the ST WeSU app available free of charge from Apple Store™ and Google Play™ stores. The Apps are based on BlueST SDK, available on GitHub.

Advanced users can also further reduce the hardware form factor; please refer to STEVAL-WESU1 user manual for more details.

The STEVAL-WESU1 firmware package is built on the STM32Cube software technology so it can easily be augmented with further algorithms. It runs on STM32L151VEY6 and includes the drivers to manage three sensors (LSM6DS3, LIS3MDL and LPS25HB), the Bluetooth low energy network processor (BlueNRG-MS) and the battery management ICs (STC3115 and STNS01).

The firmware is freely available on www.st.com.

Key Features

  • Compact solution for wearable, motion sensing applications with a complete set of firmware examples
  • iOS and Android apps available
  • Main components:
    • STM32L151VEY6 – 32-bit ultra-low-power MCU
    • LSM6DS3 – 3D accelerometer + 3D gyroscope
    • LIS3MDL – 3-axis magnetometer
    • LPS25HB – MEMS pressure sensor
    • BlueNRG-MS – BLE network processor
    • BALF-NRG-01D3 - 50 Ω balun with integrated harmonic filter
    • STNS01 – Li-Ion linear battery charger
    • STC3115 – Fuel gauge IC
  • 100 mAh Li-Ion battery included, UN38.3 tested and certified
  • Micro USB connector for recharging
  • SWD connector for debugging and programming capability
  • Watch strap with plastic housing included
  • Fully tested and certified by FCC (FCC ID: S9N-WESU1) and IC (IC: 8976C-WESU1)
  • RoHS compliant
Product Specifications
DescriptionVersionSize
DB2854: Wearable sensor unit reference design for fast time to market1.0291 KB
User Manuals
DescriptionVersionSize
UM2041: How to use the STEVAL-WESU12.05 MB
Presentations
DescriptionVersionSize
STEVAL-WESU1 Getting Started1.41 MB
Board Manufacturing Specifications
DescriptionVersionSize
STEVAL-WESU1 gerber files1.0204 KB
Bill of Materials
DescriptionVersionSize
STEVAL-WESU1 BOM1.289 KB
Schematic Packs
DescriptionVersionSize
STEVAL-WESU1 schematic2.0314 KB
License Agreement
DescriptionVersionSize
501225 Battery Air Transportation Authorization201612311 MB
501225 Battery CE Certification1.048 KB
Evaluation products license agreement1.0125 KB
Hardware Development Tools
Part NumberManufacturerDescription
ST-LINK/V2STST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32
Evaluation Tool Software
Part NumberManufacturerDescription
STSW-WESU1STBluetooth low energy, MEMS sensors and battery management firmware for wearable applications
ST_BLUE_DFUSTWeSU over-the-air device firmware upgrade
ST_WESUSTSTEVAL-WESU1 Android/iOS app
MEMS and Sensors Software
Part NumberManufacturerDescription
osxMotionARSTReal-time Activity Recognition software expansion for STM32Cube
osxMotionCPSTReal-time carrying position software expansion for STM32Cube
Sample & Buy
Part NumberUnit Price (US$) *QuantityCore ProductECCN (EU)ECCN (US)Country of Origin
STEVAL-WESU148.951STM32L151VEY6; BLUENRG-MSQTR; LPS25HB; LSM6DS3; LIS3MDL; STC3115; BALF-NRG-01D35A002A1A5A992AITALY
Quality & Reliability
Part NumberPackageGradeRoHS Compliance GradeMaterial Declaration**
STEVAL-WESU1CARDIndustrialEcopack2
Wearable sensor unit reference design for fast time to market STEVAL-WESU1
How to use the STEVAL-WESU1 STEVAL-WESU1
How to use the STEVAL-WESU1 STEVAL-WESU1
How to use the STEVAL-WESU1 STEVAL-WESU1
How to use the STEVAL-WESU1 STEVAL-WESU1
How to use the STEVAL-WESU1 STEVAL-WESU1
How to use the STEVAL-WESU1 STEVAL-WESU1
How to use the STEVAL-WESU1 STEVAL-WESU1
ST-LINK/V2 in-circuit debugger/programmer for STM8 and STM32 ST-LINK-V2