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Faire Maus! A 'fair' USB optical mouse
A few weeks ago I wrote a blog post about ethical and sustainable electronics.In the post I mentioned a German project called Nager IT who have designed an optical USB mouse using low carbon materials...
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Measuring building thermal performance - coheating tests
Improving the thermal performance of buildings is an area where some of the largest energy and carbon savings can be made. Building energy use and carbon emissions can be reduced by as much as 60-80%...
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RaspberryPI: SD Cards, HDD, Gateway Forwarder
After several Raspberry Pi emonBase SD card failures between myself and Glyn in the last two weeks and the general experience of short SD card lifespan on the forums (SD cards have a limited number of...
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Backing up your raspberrypi emoncms or emoncms.org account
I've added a couple of scripts to the emoncms usefulscripts directory that makes backing up an emoncms account whether on a local raspberrypi or emoncms.org much easier than the sync module solution,...
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In the interest of open-source I thought I would share the backup setup we have running for the OpenEnergyMonitor website. I'm relatively new to sys-admin tasks and writing bash scripts so please...
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CarbonCoop & OpenEnergyMonitor build weekend, November 16 & 17th
After much re-arranging we've got the new date for the energy monitoring build weekend that we're hosting with Carbon Coop at MadLab in Manchester. Its now on the 16th and 17th of November.Meetup...
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emonTH Update - Hardware
Since my last post on the emonTH wireless Temperature and Humidity monitoring node good progress has been made.emonTH cased upemonTH - unboxedThe most significant hardware change has been the addition...
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emonTH Update - Software and Power Consumption
Today I have spent some time writing the software for the emonTH. The goal for the emonTH is for it to last as long as possible from batteries (2 x AA's). The boost converter circuit as highlighted in...
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AA Battery Considerations
The manufacture of batteries is a very energy intensive process often using many types of heavy metals, it makes total sense to use rechargeable batteries where possible and always recycle old...
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Raspberry Pi - A new type of RAM
If you've had trouble booting up your Raspberry Pi then read on...The latest batch of Raspberry Pi's we have been selling through the shop (manufactured in South Wales, UK) have use a new type of RAM...
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New office space and new hardware units
Thanks a lot for everyone's support, it feel like we're on the verge of starting a new chapter.The next chapter sees us transferring from self-assembly through-hole kits to pre-assembled ready to go...
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Bulk SD Card Loading
Here's a neat little trick which should be useful for anyone needing to flash the same SD card .img onto lots of SD cards in parallel. We have been using it to load up the Raspberry Pi pre-loaded...
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Improving emoncms performance with Redis plus interesting consequences for SD...
As part of recent work to improve the performance of emoncms because of high load's on emoncms.org there is now an emoncms branch that uses redis to store feed and input meta data including last feed...
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Documentation highlight: Solar PV power diversion PLL
I would like to highlight the recent addition of some really great documentation written by Robert Wall and Martin Roberts detailing Martin's Solar PV power diversion implementation which uses an...
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Documentation highlight: Application guides
To try and bring the work on the application guides more to the fore, I've rearranged the openenergymonitor guide bringing the application guide list up to the top of the page.There you will find Robin...
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Hardware Manufacture Begins! Part 1: emonTH Temperature and Humidity Node
It's a busy for weeks for us at the moment. If you've been following us on twitter you will have see in the last week we have had the production PCB's designs for the emonTx V3, emonTx Shield SMT and...
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Hardware Manufacture Begins! Part 2: emonTx V3 and emonTx Arduino Shield SMT
This morning I visited Kaizen Technology in Royston near Cambridge. They're manufacturing the emonTx V3 and emonTx Arduino Shield SMT energy monitoring nodes. We choose Kaizen since we have worked with...
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New hardware is in the shop and starting to ship this week
If you have been following the blog and twitter over the past couple of weeks you will probably have noticed that we've been gearing up for and starting manufacture (part 1 and part 2) of a trio of new...
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2013 Christmas Ordering Info - Royal Mail Last Posting Dates for Delivery...
It's that time of year again! We're busier than ever with the launch of our new hardware modules this week.Thanks to everyone who's helped support the project by ordering through the shop or...
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Adding control to emoncms: RFM12b Packet Generator
I've had many conversations with people recently about controlling things like radiator set points, boiler thermostat's, heatpump's and so on.I visited John cantor of http://heatpumps.co.uk/ today who...
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