mikroElektronika click boards Heart rate click Manual

Heart rate click
1. Introduction
Heart rate click carries a MAX30100
integrated pulse oximetry and heart rate
sensor. It's an optical sensor that derives
its readings from emitting two wavelengths
of light from two LEDs, then measuring
the absorbance of pulsing blood through
a photodetector. The signal is processed
by a low-noise analog signal processing
unit and communicated to the target MCU
through the mikroBUS™ I2C interface. A
programmable INT pin is also available.
Uses 3.3V power supply.
2. Soldering the headers
Before using your click board ™ , make sure
to solder 1x8 male headers to both left and
right side of the board. Two 1x8 male headers
are included with the board in the package.
2
Turn the board upside down so that
the bottom side is facing you upwards.
Place shorter pins of the header into the
appropriate soldering pads.
1
3
Turn the board upward again. Make sure
to align the headers so that they are
perpendicular to the board, then solder the
pins carefully.
3. Plugging the board in
Once you have soldered the headers your
board is ready to be placed into the desired
mikroBUS socket. Make sure to align the cut
™
in the lower-right part of the board with the
markings on the silkscreen at the mikroBUS
socket. If all the pins are aligned
correctly, push the board all the
way into the socket.
4. Essential features
Heart rate click is suitable for prototyping
wearable devices for fitness or medical
applications. The MAX30100 is a low powered
IC and it also incorporates ambient light
cancellation and motion artefact resilence.
For best results, the readings should be
taken through the tip of one's finger (the
red and IR LED combination is optimized for
this application). The readings, however, can
be negatively impacted by excess motion
and temperature variations. Also, too much
pressure can constrict capillary blood flow
and diminish the reliability of the data.
click
™
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Heart rate click Manual v100
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