STEVAL-WESU1 Datasheet STEVAL-WESU1 | P1-P3

March 2016

DocID029018 Rev 1

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STEVAL-WESU1

Wearable sensor unit reference design for fast time to market

Data brief

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

Description

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.

Formal notice requirements

STEVAL-WESU1

2/5

DocID029018 Rev 1

1 Formal notice requirements

Required by the U.S. Federal Communications Commission (“FCC”)

Any changes or modifications to this equipment not expressly approved by

STMicroelectronics may cause harmful interference and void the user’s authority to operate

this equipment. This device complies with Part 15 of the FCC Rules. Operation is subject to

the following two conditions: (1) this device may not cause harmful interference, and (2)

this device must accept any interference received, including any interference that may

cause undesired operation. This device uses, generates and radiated radio frequency

energy. The radio frequency energy produced by this device is well below the maximum

exposure allowed by the Federal Communications Commission (FCC).

The STEVAL-WESU1 is FCC certified (FCC ID: S9N-WESU1).

Formal notices required by Industry Canada (“IC”)

English:

This device complies with Industry Canada licence-exempt RSS standard(s). Operation is

subject to the following two conditions: (1) this device may not cause interference, and (2)

this device must accept any interference, including interference that may cause undesired

operation of the device.

French:

Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils

radio exempts de licence. 'exploitation est autorisée aux deux conditions suivantes : (1)

l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter

tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en

compromettre le fonctionnement.

The STEVAL-WESU1 is IC certified (IC: 8956C-WESU1).

STEVAL-WESU1

Schematic diagram

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2 Schematic diagram

Figure 1: Functional block diagram

STM32L

Microcontroller

32 kHz 24 MHz

LIS3MDL

LSM6DS3

LPS25HB

SPI 8 MHz

BlueNRG

SPI 8MHz

STC3115

Antenna Tuning Circuit

BALF-NRG-01D3

Chip Antenna

32 MHz

I2C

100 kHz

32 kHz

GSPG1702161120SG

P1-P3 P4-P5

STEVAL-WESU1

Mfr. #:

Buy STEVAL-WESU1

Manufacturer:

STMicroelectronics

Description:

Multiple Function Sensor Development Tools Wearable sensor unit reference design for fast time to market

Lifecycle:

New from this manufacturer.

Delivery:

DHL FedEx Ups TNT EMS

Payment:

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