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new products
Also part of the SensorTile kit is a cradle/expansion board
with an analog audio output, a micro-USB connector,
and an Arduino-like interface that can be plugged into
any STM32 Nucleo board to expand developers’ options
for system and software development. A programming
cable is also included.
The SensorTile kit (STEVAL-STLKT01V1) is available
now from distributors or can be purchased directly from
st.com, priced at $89.00.
Main features of SensorTile core system:
LSM6DSM 3D accelerometer + 3D gyroscope
LSM303AGR 3D Magnetometer + 3D accelerometer
LPS22HB pressure sensor/barometer
MP34DT04 digital MEMS microphone
STM32L476 microcontroller
BlueNRG-MS network processor with integrated 2.4GHz
radio
For further information please visit
www.st.com/sensortile
Maxim Reference Design Speeds
Development of Wearable Heart-Rate and
Pulse-Oximetry Monitors
Developers of heart rate and blood oxygen (SpO2)
monitors can now accelerate their efforts using the
ultra-small MAXREFDES117# reference design from
Maxim Integrated Products, Inc. (NASDAQ: MXIM/).
This optical heart-rate module reference design
incorporates red and infrared LEDs, a sensor, power
subsystem, and logic level translation. Measuring
13mm x 13mm, this tiny, low-power board can be placed
on a finger or earlobe to accurately detect heart rate
and SpO2 via personal wearable devices. The module
works with both Arduino® and ARM® mbed™ platforms
for ease of design, testing, and system integration, and
includes eight “tap pads” for quick electrical connection
to a development platform and/or wearable garment.
Maxim, already a leader in bio-sensing applications
with more than 200 million units shipped, now provides
this simple platform to enable all developers. The
reference design includes three Maxim chips: a pulse
oximeter and heart-rate sensor (MAX30102); an
efficient, low-power step-down converter (MAX1921);
and an accurate level translator (MAX14595). The
design requires only a single 2V to 5.5V supply and
typically dissipates less than 5.5mW when using the
included firmware.
Key Advantages
Ease-of-Use: Compatible with both Arduino and ARM
mbed platforms to simplify set-up
Fast Time-to-Market: Includes open-source heart-rate
and SpO2 algorithm; BOM; schematics; layout, and
Gerber files to accelerate development
Versatile: Can be used for product development or as a
module in the final design
Commentary
“Maxim is providing a basic open-source heart-rate
and SpO2 algorithm as part of the firmware, and we
encourage users to build upon it,” said David Andeen,
Director of Reference Designs at Maxim Integrated.
“Makers and developers can use this either as a ‘starting
point’ reference design, or embed any variation in their
final product or project.”
“As we continue to bring innovative designs to our
customers, we have started a collaboration with
Maxim—this is the first product we manufactured and
built with them,” said Joey Jiang, Marketing Product
Director, Seeed Studio. “We’re excited to see what
people will make with this reference design.”
Availability and Pricing
The MAXREFDES117# reference design is available for
$20 at Maxim’s website, select franchised distributors,
and
http://bit.ly/Seeed_MAXREFDES117.Hardware
and firmware design files, as well as test data, are
provided free and available online.
For information on other reference designs, visit http://
bit.ly/ReferenceDesigns.All trademarks are the property of their respective
owners.
70 l New-Tech Magazine Europe