# Help Me Please

Hello Friends.
I have a project build device of air monitoring using arduino uno DT-sense Carbon monoxide types MQ-7 sensor, can someone help me out about coding for it please

I also have to display it in a mobile application, I am using intel XDK for the application but I also do not have coding for it, someone told me that I have to learn a programming socket, can someone please help me.

i really need help. please.

I find this one. https://www.sparkfun.com/datasheets/Sensors/Biometric/MQ-7.pdf
(Other datasheet states 1.5V as low voltage)
Alternate power supply 5V / 1.4V (60sec/90/sec) for a looong time
Use a 10k serial.(more or less)
Read voltage just before end of 90 sec period. Calculate sensors resistance at this point.
This will be your reference pointâ€¦ (usually indoor environment is 0.5 to 5ppm CO)
â€¦
When reading for CO. Calculate the change in resistance (Rs/Ro) This will be â€˜yâ€™ in the formula below.
Solve for x.

Previous picture has an errorâ€¦ (40 should be 50)
New formula: Rs/Ro = 22.2 * ppm-0,67