mikroElektronika Methane click User manual

1. Introduction
3. Plugging the board in
2 3
2. Soldering the headers
1
4. Essential features
Methane click Manual
ver. 1.00
0 100000 026601
click™
BOARD
www.mikroe.com
Methane click™
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.
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.
Methane click™can detect methane levels in
concentrations from 200 to 10000ppm. The
MQ-4 methane sensor has a sensor layer
made of Tin dioxide (SnO2), an inorganic
compound which has lower conductivity
in clean air. The conductivity increases as
the levels of methane rise. Methane 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.)
Methane click™is a simple solution for
adding a high sensitivity methane (CH4)
sensor to your design. It’s suitable for
designing gas leakage equipment. The
boardfeaturesan MQ-4sensor,a calibration
potentiometer, a mikroBUS™host socket,
two jumpers and a power indicator LED.
Methane click™communicates with the
target board through mikroBUS™AN (OUT)
line. Methane click™is designed to use a
5V power supply only.

8. Support
7. Code examples
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MikroElektronika assumes no responsibility or liability for any errors or inaccuracies that may appear in the present document.
Specication and information contained in the present schematic are subject to change at any time without notice. Copyright © 2014 MikroElektronika. All rights reserved.
5. Methane click™board schematic
VCC
R1
2K2
VCC
R2
470
VCC
AN
RST
CS
SCK
MOSI
MISO
+3.3V
GND
PWM
INT
RX
TX
SCL
SDA
+5V
GND
MIKROBUS DEVICE CONN.
Analog output
PWR
P1
10K
B
H
B
A
H
A
MQ-4
6. Calibration potentiometer
MikroElektronika oers free tech support
(www.mikroe.com/support) until the end
of the product’s lifetime, so if something
goes wrong, we’re ready and willing to help!
Once you have done all the necessary prep-
arations, it’s time to get your click™board up
and running. We have provided examples
for mikroC™, mikroBasic™and mikroPascal™
compilers on our Libstock website. Just
download them and you are ready to start.
To calibrate Methane click™for optimum
performance, use the on-board potentiom-
eter to adjust the load resistance of the
sensor circuit.