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How to build an Energy Monitoring Android App part 1
P { margin-bottom: 0.21cm; }A:link { }Glyn and I have wanted to have an android app to make it easier to access energy monitoring data from phone's and tablets for sometime. Last year we took part in a...
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Gwynedd Council Award 2014
Many thanks to Gwynedd Council (our local council) inviting us along to the Gwynedd Business Week dinner and presenting us the 'Special Contribution to Gwynedd's Economy' award week before last. It's...
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How to draw a myelectric style bar chart
Part of the android app tutorial series: How to build an Energy Monitoring Android App P1Both the myelectric emoncms module and the soon to be myelectric android app have a bar chart that is written...
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emonPi Raspberry Pi Energy Monitoring Shield - Prototype Dev Update
For a while now I have been working on developing a Raspberry Pi energy monitoring shield. Here is a preview of the first prototype design.The emonPi is not designed to totally replace the emonTx V3,...
View ArticleEmoncms time-series feed engine documentation
I've been working over the last few days on writing documentation on how the emoncms time-series feed engines work (phpfiwa, phpfina and phptimeseries). The documentation is an early draft at this...
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emonGLCD V2 SMT Development
For sometime now the emonGLCD has been lagging behind other OpenEnergyMonitor hardware units in terms of development, we're still selling it only in thru-hole DIY kit form.We've been thinking about...
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Reducing emoncms write load and a minimal python version of emoncms
Over the last few weeks I have been investigating how to reduce the write load of emoncms to explore if it might be possible to achieve long term logging on SD cards.A brief summaryThrough a mix of...
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How CT Sensors are Made...
Ever wondered how CT sensors are made? I've just been sent these photos of inside the YHDC factory, here we can see the CT windings being wound:Â
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Android Tasker & Pebble Smartwatch - Emoncms Notifications
Tasker is a powerful Android app which can be used to automate all sorts of things on your phone or tablet.Using Tasker it's easy to create notifications using data from Emoncms to be triggered by...
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Pebble Smart Watch Emoncms Heating Control Demo
This post follows on my post a while back on Emoncms heating control, and links in with my previous post on using Tasker to display Emoncms notifications. For details of the hardware and overview of...
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Monitoring SolarPV, Heatpump and house electric, EmonTx v2 system upgrade...
Several years ago we did a community energy monitoring project in our local area, Penrhyndeudraeth, North Wales. It involved installing 20 openenergymonitor energy monitors in 20 households and...
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A right to build: An open approach to housing provision: self-provision
A right to build is a booklet written by Alaistair Parvin of (00 and Wikihouse), David Saxby, Cristina Cerulli and Tatjana Schneider that outlines a clear and comprehensive vision for how a...
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From the Forum: Using Modbus RS485 to read a SDM630M 3-phase meter
JBecker writes :I am using a modified OpenEnergyMonitor energy monitoring hardware since more than a year now, with one voltage sensor and three CTs for the current measurement of the three mains...
View ArticleEmonhub installation/update, replacing the PHP raspberrypi emoncms module
From Paul Reed's post on the forums here: http://openenergymonitor.org/emon/node/5986Emonhub is now the recommended method of interfacing a rfm12pi to a local or remote emoncms install, and replaces...
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Testing KiCad PCB
We are always a fan of using open-source software wherever possible. A few years ago I briefly attempted to use open-source KiCad and gEDA PCB CAD software but found them very limiting, clumsy and...
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Snowdonia household energy study, exploring zero carbon solutions
A couple of years ago Glyn and I and a friend of ours Bethan Gritten carried out an energy study with a local organisation called EcoBro of 17 households in Snowdonia, North Wales including our own.We...
View ArticleResearch Project Call for Participants
In collaboration with Corina Sas from Lancaster University we would like to to evaluate members' experience of building, setting up and using our monitors and how these impact on people's understanding...
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Introducing RFM69CW
For sometime now the Hope RF RFM12B module has been our RF module of choice. This module was chosen for it's low cost, decent performance and importantly for us, an active development community. On the...
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Kettle vs Blanket
One of the things I love about monitoring energy is that it can be used to answer questions and inform decisions.In my household we have recently purchased an electric blanket, I had always associated...
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Introducing emonTx V3.4
Now shipping later this week in the shop is an updated version to the emonTx V3. This is a relatively minor update feature and form factor wise, most users probably won't notice the difference. However...
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