A Xively AMbient QUality MOnitor built on ATmega328

AMQUMO logs 4 environmental parameters:

  • Humidity
  • Temperature
  • Ambient Noise
  • Brightness
The data it is logged to the xively.com platform, and displayed to the user through 4 bi-color leds.
A Xively AMbient QUality MOnitor built on ATmega328
It can be used to monitor you Office Ambient Quality over the parameters logged.
This project it is built upon the xively logger ATmega328 library: http://davidegironi.blogspot.it/2014/12/a-web-configurable-xively-logger-build.html
So, a web page can be used to setup network parameters, and xively tokens.
Network can be set using a Static IP, Gateway, NET Mask, or DHCP.
Obviously xively feed number and API token can be setup by that web page.
Also the temperature sensor library expose a Celsius/Fahrenheit settings here
EC28J60 board perform all the communications.
For humidity and temperature a DHT22 sensor it is used.
To measure ambient noise an analogic noise sensor built with a electret microphone and a opamp it is used.
Brightness it is measured by a BH1750 sensor board.
Ambient noise and brightness are sampled 2 times per seconds, in order to give the led feedback almost instantly. Humidity and temperature have slower samplerate.
Ambient levels average it is computed and then posted to xively.com every minute.
All that parameters can be changed at compile time by user.
Also it is quite simple to add your own sensor.
The PCB is quite simple, it’s just a bridge board for a low cost Arduino Mini board and all the sensors board.
The main board and all sensor can be of course designed as a single board.
Note that the temperature and humidity sensor needs to be exposed outside the main electronics board, because both the EC28J60 chip and the voltage regulator heat up to almost 40 deg. and
To solve this issue, a step down switching regulator should be used. And eventually another networking solution.

About The Author

Ibrar Ayyub

I am an experienced technical writer holding a Master's degree in computer science from BZU Multan, Pakistan University. With a background spanning various industries, particularly in home automation and engineering, I have honed my skills in crafting clear and concise content. Proficient in leveraging infographics and diagrams, I strive to simplify complex concepts for readers. My strength lies in thorough research and presenting information in a structured and logical format.

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