Datasheet

2 3
ver. 1.00
Hydrogen click
™
Manual
0 100000 026830
click
™
BOARD
www.mikroe.com
2. Soldering the headers
Hydrogen click
™
1
1. Introduction
Hydrogen click
™
is a simple solution
for adding a high sensitivity hydrogen
(H
2
) sensor to your design. It’s suitable
for designing gas leakage equipment.
The board features an MQ-8 sensor, a
calibration potentiometer, a mikroBUS
™
socket and a power indicator LED.
Hydrogen click
™
communicates with the
target board through mikroBUS
™
AN
(OUT) line. Hydrogen click
™
is designed
to use a 5V power supply only.
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.
Turn the board upward again. Make sure
to align the headers so that they are
perpendicular to the board, then solder
the pins carefully.
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.
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.
4. Essential features
Hydrogen click
™
can detect hydrogen levels
in concentrations from 100 to 10000ppm.
The MQ-8 hydrogen sensor has a sensor
layer made of tin dioxide (SnO
2
), an inorganic
compound which has lower conductivity in
clean air. The conductivity increases as the
levels of hydrogen rise. Hydrogen click
™
also contains a potentiometer that lets you
adjust the sensor for the environment you’ll
be using it in. For precise calibration the
sensor needs to preheat (once powered up,
it takes 24h to reach the right temperature).