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1. Introduction

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....

3. Plugging the board in

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3

2. Soldering the headers

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4. Essential features

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.

click

BOARD

www.mikroe.com

CO click

 can detect Carbon monoxide 

levels in concentrations from 20ppm to 
2000ppm. The MQ-7 CO sensor unit 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 CO rise. CO click

 

also contains a potentiometer that lets you 
adjust the sensor for the environment. For 
precise calibration the sensor needs to 
preheat (once powered up, it takes 48h to 
reach the right temperature).

CO click Manual

ver. 1.00

CO 

click

CO click

 is a simple solution for adding a 

high-sensitivity Carbon monoxide sensor 
to your design. The board features an MQ-7 
sensor with a Sn02 gas sensing layer, a 
calibration potentiometer, a mikroBUS

 

host socket, two jumpers and a power 
indicator LED. CO click

 communicates 

with the target board through mikroBUS

 

AN (OUT) line. CO click

 is designed to use 

a 5V power supply only. 

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