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Monday, January 5, 2015

CO2 meter and Xively logger with NDIR infrared sensor built on AVR ATmega328

This is an AVR ATmega328 based CO2, temperature and humidity logger and meter.



It logs data feed, CO2 in air in terms of ppm, temperature and humidity to a xively.com feed.
It also display realtime data to user through a 16x2 characters LCD.


This logger it is based on the xively logger you can found here: http://davidegironi.blogspot.it/2014/12/a-web-configurable-xively-logger-build.html


User can setup the ethernet connection address through a web interface. Network can be setup with a static IP address, or using DHCP. Also the Xively feed and API key to use to log data could be setup by the web interface.
Custom Channel ID for the xively feed could be setup in code, at compile time.


A button is installed, so that when the user press it the lcd led will power on for 60 seconds.

For temperature and humidity is the DHT22 sensor it is used, for CO2 meter the NDIR infrared MZ-Z14.
This project was developed on ATmega328 running at 16MHz.
The network board it is based on the EC28J60 chip.


Code

Notes
  • read risk disclaimer
  • excuse my bad english
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6 comments:

  1. Janis AlnisFebruary 5, 2015 at 5:55 PM

    This comment has been removed by a blog administrator.

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  2. UnknownMarch 8, 2015 at 5:56 PM

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  3. EmmanuelSeptember 8, 2015 at 4:42 PM

    Hello, do you think this box can be used outside (of course removing the ethernet hole ;-)

    ReplyDelete
    Replies
    1. Davide GironiSeptember 8, 2015 at 9:10 PM

      Yes, it can. But you have to make it water resistent.

      Delete
  4. vovanJanuary 22, 2019 at 9:39 AM

    Fuse are set by default?

    ReplyDelete
    Replies
    1. Davide GironiJune 28, 2019 at 2:56 PM

      Hello, no, here i run the micro at 16Mhz using and external crystal, default values use the internal RC osciallator circuito at 1Mhz.

      Delete