Clik here to view.
Public and private feeds
Another new feature in the latest commit is what I hope is clearer feed authentication levels:Public access to feeds - no authentication required accessible to everyone - these are for use in public...
View ArticleClik here to view.
RFM12B Wireless Transmission Explained
All OpenEnergyMonitor hardware modules (emonTx, emonGLCD emonBase etc) currently use the RFM12B 433/868/915Mhz module to communicate via wireless. We use the JeeLib Arduino library from JeeLabs as the...
View ArticleClik here to view.
OpenEnergyMonitor Meetup
We had a very enjoyable OpenEnergyMonitor meetup last weekend. Ken Boak and Paul Allen (MarsFlyer) came up from London, Matt Fawcett from Manchester and Carlos Alonso Gabizó from Machynlleth.From left...
View ArticleTax and Season's Greetings...
...those are two words which are not often used together!Since launching the OpenEnergyMonitor online-shop in March this year we have been busy shipping over 1300 order to 47 countries.A big thank you...
View ArticleClik here to view.
A big thank you to everyone
As you know OpenEnergyMonitor is a collaborative project. The project would be nothing without the hard work, time and effort that so many of you dedicate. With the festive season upon us and the year...
View ArticleClik here to view.
Power emonTx from single AC power supply - Part 2 bench testing
Back in May last year we did some work (with the help of Robert Wall and others) into the design of an AC-DC circuit to allow the emonTx to run off a single AC power adapter while at the same time...
View ArticleClik here to view.
Air Quality Egg
The Air Quality Egg is a sensing device which facilitates a community-led network that gives people a way to participate in the conversation about air quality.The Air Quality egg monitors local Co2,...
View ArticleClik here to view.
Air Quality Egg Sensor Shield
The Air Quality Egg Arduino Shield provides a lower cost way for those of you with a spare Arduino / Nanode(RF) to get started with monitoring air quality and joining in the global air quality crowd...
View ArticleIdeas for improving the emoncms framework
I've been looking again at writing the developer documentation for emoncms, in particular Id like to document how to build the core framework from scratch, explaining the design decisions and...
View ArticleClik here to view.
emonTx SMT update > Introducing emonTx V3
If you're a regular follower of our blog you might remember towards the end of the summer of last year (2012) we posted up a design of an emonTx SMT (pre-assembled using surface mount...
View ArticleClik here to view.
Clik here to view.
Pictures from the OpenEnergyMonitor CAT course
A couple of weeks ago we held our first openenergymonitor course at the Center for Alternative Technology in Mid Wales. It was well attended with 17 of us in total including tutors: myself, Carlos and...
View ArticleClik here to view.
Introducing the RFM12Pi V2 - Raspberry Pi Wireless Expansion Board
Since, November last year we have more and more been leaning towards using a Raspberry Pi as our web connected base station of choice. See here for our original blog post on using the Raspberry Pi as...
View ArticleClik here to view.
Carbon Coop
The weekend before last I went to Manchester to help Matt Fawcett and Jonathan Atkinson of Carbon coop with the EcoHome_Lab openenergymonitor energy monitor building workshop. I haven’t blogged about...
View ArticleClik here to view.
One Year of Solar PV Monitoring
On the 23rd November 2011 we have had a 2.9Kwp solar PV installed. We recently got our first payment from the UK's governments Feed In Tariff scheme. This has prompted me to take stock of how the...
View ArticleOpen Source Hardware Users Group (OSHUG) #26 Meetup
Last night I attended OSHUG event #26 in London and gave a short talk on Low Power Wireless sensors as well as the brief overview of the OpenMonitorProject and a quick look at what we've been working...
View ArticleClik here to view.
Testing DS18B20 temperature sensing on emonTx v3
Hello, so I thought Id try something new on this blog, I'm going to try writing short blog posts about progress and general work on things day to day, these are not intended to mark significant...
View ArticleClik here to view.
Continuation of emontx testing - feed comparison tool
Glyn has been running a parallel test of the new emontx v3 vs the old emontx v2 for over a month now. See Glyn's original post introducing emontx v3 here:...
View ArticleClik here to view.
12 input pulse counter idea
A while ago now Glyn and I worked on a design for a 12 input pulse counter, we where doing some work at the Centre for Alternative technology, a stripboard version was built and is in continued use...
View ArticleEmoncms.org backup
I'm happy to announce that emoncms.org is fully backed up and has incremental backup implemented, all data is incrementally backed up once every 24 hours, a backup cron job runs hourly syncing 640...
View Article