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PICAXE to control hydronic/radiator heating...

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DamonHD:
This project is all about energy efficiency and an easy retrofit to the very common boiler+radiators (aka hydronic or 'wet' central heating) scheme in use in the UK.

I mentioned this project in the Diaries section a little while ago, and we have now got to the stage where our PCBs are on the way back from China, we'll be populating a few of the (SMD) boards, and working on the next round where we hope to do some of the mechanics as well.

That next round may well involve an Arduino/ATmega implementation as well as PICAXE, since I want to make this project as accessible as possible.

http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html

We had a little item in Automated Home yesterday as well:

http://www.automatedhome.co.uk/carbon-footprint/opentrv-better-heating-and-saving-the-planet.html

Rgds

Damon

DamonHD:
Here's an outline timetable to get us updated tech ready for *next* winter (not that this one has gone away yet!) including an Arduino stack:

http://www.earth.org.uk/open-source-programmable-thermostatic-radiator-valve.html#timelineTo201310

Rgds

Damon

Larsmartinxt:
Great project!

Have you thought about using "energy harvesting" in the system to eliminate the need for replacing batteries?

Lars

DamonHD:
Hi,

There has been some discussion of that if you follow this thread:

http://lists.opentrv.org.uk/pipermail/opentrv-dev/2013-March/000173.html

Rgds

Damon

DamonHD:
The first PCB was populated and tested last night!

https://twitter.com/mikestir_uk/status/319917642435665921/photo/1

Rgds

Damon

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