i would like to create sort of device that will collect data/log of temperature and humidity. the concept is portable size of device that you can lay on everywhere for several minutes/hours, then you can connect it to computer or via memory stick to see the graph of recorded temperature and humidity.
my inspiration is this tushev.org // Simon Tushev. i think i would like to make it micro controller based since it affordable.
any idea what major component will be required? so far i listed:
-micro controller for processor
-hh10d for humidity sensor
i think i would like to make it micro controller based since it affordable.
The link describes a microcontroller based setup.
Add an SD card shield/breakout to store your data, that makes it easy to transfer the data to the PC. There are probably thousands of project doing exactly the same if you search the Net.
I'd suggest the DHT22. My project uses two of them and they work well. They read both temperature and humidity with good accuracy.
You'll need an SD card shield. I'd also consider making it rechargable. That always adds to portability.
I found with my project that I dump the data from the card to my computer via serial rather than removing the card. I just send a command via serial and it writes out my data file. I then use gnuplot for pretty graphs. My project logs data from two DHTs and a single temp sensor 1000 times a day as a secondary action to its regular duties of switching things on and off.
