Program to log RF12 data to a computer

Jee Labs Talk » Pointers & products

Program to log RF12 data to a computer

(10 posts) (5 voices)

Tags:

No tags yet.

hobbyhack

I am using my JeeNodes to capture energy usage data and I wanted to capture longer term trending information. I wrote a program that runs on an attached computer and grabs all RF12 serial data from a JeeNode/JeeLink. It logs the good data in a csv file and anything else to an error log.
http://code.google.com/p/rf12datalogger/downloads/list
You will need python and pyserial. It should work on any OS but it was developed and tested on Ubuntu 10.04 with python 2.6.5. This will grab data straight from rf12Demo.
It currently grabs any packet that has a good checksum and has 3 fields of data beyond the status and nodeID but it would be easy to tune for another purpose. It can send all of the other data to a log file.
I am working on adding an option to log to mysql as well.
I am not really a coder and this is my first attempt at python so I would appreciate some constructive feedback.

Posted 01/06/2010 19:25:49
jeroen

Perhaps an idea to look at rrdtool. It is great for creating all kind of graphs. Internally there is a database with auto compression and cleaning.

Posted 01/06/2010 19:42:02
bvwelch

Sounds like a really cool program, I will check it out!
I like python also, and for python graphs,I like pyQt and pyQWT, but since so many folks use 'Processing' with their Arduino projects, I decided to give that a try myself. If you'd like to see a short, simple example, check out my arduino/sandbox. You'll see an Arduino sketch and the matching Processing sketch.
Note: my JeeNode has no RF, so my Arduino program is just sending ascii data in the CSV format.
ps: this web site looks interesting, even though I don't understand it:

Posted 01/06/2010 20:11:11
hobbyhack

I am actually playing with a combination of mrtg and nagios. Mrtg uses rrdtool and I was going to use it for data analysis. I am interfacing with nagios in order to take some actions based on sensor data like my motion sensors or temperature sensors.
pachube.com looks really cool. Thanks for the link.
I haven't played with Processing much. I might be wrong but it looked to me like I needed a GUI to run the IDE. I am using an embedded guruplug http://www.globalscaletechnologies.com/t-guruplugdetails.aspx as the computer to save on energy costs. i was able to get arduino compiling on the command line so I am sure it is possible.

Posted 01/06/2010 21:27:59
bvwelch

I did some work last year on a Sheevaplug, and there are a couple of different ways to get X and gnome/kde running:
But we'd need to see if Java is available for Processing. I don't remember, and I've loaned out my Sheevaplug for the moment.
I did run Pyqt and PyQWT on my Sheevaplug - they worked fine.

Posted 01/06/2010 21:48:42
epokh

I used wxPython which is more easy to install to show the sensor data and to send also automated SMS. I need to find the time to upload it on google code! So many things to do and few time!

Posted 03/06/2010 23:28:12
hobbyhack

Google code takes like 3 minutes. it is faster than posting to a forum :-).
OK. Maybe not quite that fast. I am just messing with you because I would love to see your code.

Posted 04/06/2010 06:00:32
axel

Hallo bvweich,
> ps: this web site looks interesting, even though I don't understand it: http://www.pachube.com/
You can logg your Sensor-Data direkt to pachube as XML/CVS via HTTP-GET/POST
Just search for FHEM.... FHEM has a Modul to Log Data to pachube-Feeds f.e. KS300 or S300/S555TH ..... FHEM is a HomeAutomation-Software...similiar ("vergleichbar mit") to JeeMon....
Greetings Axel

Posted 04/06/2010 08:19:09
epokh

Pachube they have some client implementation example for every language, for example python: http://naughtorious.com/tweetawatt.html
Yes will post the software.

Posted 04/06/2010 08:58:35
epokh

The code is on the SVN at this address: There is the decoding side on the jeenode plug and the visualization on the python-host side.

Posted 05/06/2010 10:21:24