How many ODINs do you need to change a lightbulb?

That's a trick question, I haven't told you what ODINs are!

Well, ODIN stands for Outdoor Dust Information Node and it is the name of our low-cost outdoor dust sensor. You may ask why not calling it "low-cost outdoor sensor" to which I would respond: for the same reason that Apple doesn't call their phones "high-cost shiny communication devices". A lot goes in a name and I believe that for a project to be successful it needs a good name.

So, as strange as it sounds, we have a Norse god gathering data for us.

The sensors themselves are rather simple. At the heart of the ODIN is an optical dust sensor that, together with a temperature and relative humidity sensor and a clock send data to a microcontroller which saves it on a micro-SD card. The ODIN is battery operated and it can run unattended for two months on a full 6Ah LiPo battery.
Simplified schematics of ODIN (left) and an actual ODIN (right) with its internal components visible.

A more in depth description of the ODIN and the results of the first tests can be found here:
ODIN - Discussion document

And here are six ODINs in their co-location test for their Rangiora deployment... not quite changing a lightbulb (LED nowadays) but hoping to help us change the kind of information we are able to communicate with the public.




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