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This Instructable will go through the steps to assemble the first Citizen Sensor kit : the MQ-7 Carbon Monoxide Gas Sensor Breakout Board. More info ...
The only tools you will need are: • a soldering iron • solder • snips The kit includes the following parts: • 1 MQ-7 carbon monoxide sensor • 5 414...
Locate the 10K-ohm resistor. This is the one who's stripes read brown - black - orange - gold. Bend both legs of the resistor down 90 degrees. Inse...
Find your 5 diodes. Bend their legs 90 degrees just as we did with the 10k resistor. Note the markings for the diodes on the board have a white stripe...
Line the shape of the transistor with the drawing on the PCB. you will have to bend the middle leg a bit out of the way in order to get all three thr...
The 1K-ohm resistor has stripes who's colors read brown - black - red - gold. Bend one of the legs 180 degrees as you see in the picture. Insert int...
The 5v relay is very obvious and does not require any trimming. It only fits in one way. Solder it up! We're almost there.
The socket is going to be the trickiest part of our assembly. The first thing to do is remove one of the legs. The one to remove is the 4th leg in w...
Line the legs up with the holes on the board. It might take a little bit of bending, but you need to be sure that all legs are inside the holes. They...
Take the header pins and solder them into place. This will let you breadboard the breakout. If you know where this is going to be used, you can use w...
The sensor can be inserted in 2 ways, as it is a symmetrical circle of pins. Either way is fine, they are the same. Press the sensor all the way int...
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