A Raspberry Pi weather station and air quality monitor
This is the code for the project located at http://airpi.es
Some of the files are based off code for the Raspberry Pi written by Adafruit: https://github.com/adafruit/Adafruit-Raspberry-Pi-Python-Code
For installation instructions, see http://airpi.es/kit.php
You will need to install the following dependencies:
sudo apt-get install git-core python-dev python-pip python-smbus libxml2-dev libxslt1-dev python-lxml i2c-tools
and
sudo pip install rpi.gpio requests
AirPi requires python-eeml. To install:
cd ~/git
git clone https://github.com/petervizi/python-eeml.git
cd python-eeml
sudo python setup.py install
To set up i2c, first add your user to the i2c group. For example, if your username is "pi":
sudo adduser pi i2c
Now, add the modules needed.
sudo nano /etc/modules
Add the following two lines to the end of the file:
i2c-bcm2708
i2c-dev
Exit by pressing CTRL+X, followed by y to confirm you want to save, and ⏎ (enter) to confirm the filename.
Finally, unblacklist i2c by running the following command:
sudo nano /etc/modprobe.d/raspi-blacklist.conf
Add a # character at the beginning of the line blacklist i2c-bcm2708. Then exit in the same way as last time.
Now, reboot your Raspberry Pi:
sudo reboot
Let's check to see which board version you have. Run:
sudo i2cdetect -y 0
You should see this as the output:
0 1 2 3 4 5 6 7 8 9 a b c d e f
00: -- -- -- -- -- -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- 77
If not, run:
sudo i2cdetect -y 1
and you should see the above. This tells you if your board is version 0 or 1. This is important for the next step.
Clone this repo into your git directory (or wherever you want):
cd ~/git
git clone https://github.com/tomhartley/AirPi.git
cd AirPi
Edit the settings file by running:
nano sensors.cfg
The start of the file should look like this:
[BMP085-temp]
filename=bmp085
enabled=on
measurement=temp
i2cbus = 1
[BMP085-pres]
filename=bmp085
enabled=on
measurement=pres
mslp=on
i2cbus = 1
altitude=40
If your board version is "0" change both instances of i2cbus = 1 to i2cbus = 1
Press CTRL+X to exit the file, when prompted, press "y" to save the file.
If you want to push the data to Xively, edit the outputs.cfg file:
nano outputs.cfg
The start of the file should look like this:
[Print]
filename=print
enabled=on
[Xively]
filename=xively
enabled=on
APIKey=xxxxxxxxxx
FeedID=xxxxxxxxxx
If you have registered with https://xively.com - you can add your API Key and Feed ID here.
AirPi must be run as root.
sudo python Airpie.py
If everything is working, you should see output similar to this:
Success: Loaded sensor plugin BMP085-temp
Success: Loaded sensor plugin BMP085-pres
Success: Loaded sensor plugin MCP3008
Success: Loaded sensor plugin DHT22
Success: Loaded sensor plugin LDR
Success: Loaded sensor plugin MiCS-2710
Success: Loaded sensor plugin MiCS-5525
Success: Loaded sensor plugin Mic
Success: Loaded output plugin Print
Success: Loaded output plugin Xively
Time: 2014-06-04 09:10:18.942625
Temperature: 30.2 C
Pressure: 992.55 hPa
Relative_Humidity: 35.9000015259 %
Light_Level: 3149.10025707 Ohms
Nitrogen_Dioxide: 9085.82089552 Ohms
Carbon_Monoxide: 389473.684211 Ohms
Volume: 338.709677419 mV
Uploaded successfully
This is a fork of https://git.jim.sh/jim/terminal.git from Jim Paris with some changes I had made. Hackaday also had a nice write-up on this: [Python script lets you monitor multiple serial devices at once] (http://hackaday.com/2012/11/16/python-script-lets-you-monitor-multiple-serial-devices-at-once/)
These changes are here because I was unable to get a hold of him via email to accept a patch I'd written. I found his tool very useful for some of my work: I was trying to debug some serial communications between two devices, and had no way to clearly show the transactions between them.
I fixed some Python 3.x bugs, added functionality for logging to a file, and I started trying to add functionality for timestamps at each line - but this is still not working right.