Presentation given by OpenEnergyMonitor at Home Camp 4 energy monitoring and home automation conference and Open-source hardware camp organised by OSHUG. Presentation details latest developments on our end-to-end open-source wireless web-connected energy monitoring system; both hardware and software. Blog post about the event: http://openenergymonitor.blogspot.com/2011/10/home-camp-4-presentation-slides.html

1. Home Camp 4, C4CC London
29/10/2011 Glyn Hudson and Trystan Lea

2. “A project to develop and build open-source energy
monitoring, control and analysis tools for energy efficiency
and distributed renewable microgeneration”

6. http://openenergymonitor.org/emon/emontx

7. DS18B20 one-wire
Optional AC voltage temperature bus IRQ pulse counting
(for real power
measurement)
Status LED
(upside down!)
JeePorts for
compatibility with
JeeLab shields 3 x CT channels
3.5mm jack for
Atmega 328 @ 3.3V Seedstudio CT's
(Arduino bootloader) 100A max
AA battery input
(3.3V max)
5V USB RFM12B
5V FTDI power Wireless
Arduino IDE
compatible
openenergymonitor.org/emon/emontx
github.com/openenergymonitor/emontxfirmware

8. RTC plug
16Ch PWM LED plug
Barometric pressure plug
Motor plug
Infra red plug
MOSFET plug
Light intensity plug 512Kb memory plug
OOK plug
Relay plug

9. http://openenergymonitor.org/emon/emontx
Applications
● Electricity consumption monitoring
● Renewable generation monitoring
● Heat-pump monitoring
●Water, gas and flow monitoring (from pulse
output meter)
● Temperature monitoring
● Multi node distributed monitoring network

11. ●web-connected base-station
●receives monitoring data from the emonTx
●posts to a remote or local server for web-based logging and visualisation
●emoncms or a service like Pachube.
openenergymonitor.org/emon/emonbase
github.com/openenergymonitor/NanodeRF

12. emonGLCD emonGCLD demo – point your web-connected:device to
wireless open-source http://dev.openenergymonitor.org click on emonGLCD demo
graphical LCD unit
Applications
●Energy monitoring data
●Pachube feeds
The perfect complement to
●Simple graphics – graphs, lines, shapes etc.
Nanode-RF
●Grid demand / renewable energy mix
●Temperature data – onboard and remote
●Twitter feeds, weather, email alerts, RSS
etc.
openenergymonitor.org/emon/emonglcd
github.com/openenergymonitor/emonglcd

13. emonGLCD
wireless open-source
graphical LCD unit
Temperature sensor tri-colour ambient
indicator LED's
Atmega328 Light sensor
Arduino bootloader
Mode change /
FTDI programmer general function
push-button
5v USB
power
JeeLabs 512Kb memory
expansion plug Hope RF
3.3V 128x64 px GLCD RFM12B RF
wireless
JeePort - transceiver
Expansion

16. Home energy dashboards, heatpumps, solar hot water

17. An open-source web app for processing, logging
and visualising energy, temperature and other
environmental data.
●Open-source, downloadable and installable on
your own server.
●Specifically designed with processing and
visualising energy data in mind.
● Written in php, mysql, javascript, jquery
● Follows MVC architecture
openenergymonitor.org/emon/emoncms
github.com/openenergymonitor/emoncms2

18. Input processing
Inputs Feeds
Power Power
power
kWh/d
to kWh/d
Scale, offset
Temperature Temperature
x 1.1 + 0.2
Voltage
x input Power
Current

20. EcoBro community energy project
Inspiration
Saul Griffiths - Wattzon
Poptech 2008
Saul Griffiths, and David MacKay on sustainable energy plans that add up
The question
Can we make community scale sustainable energy plans?
What we did
1.) Understand energy use of a group of people interested in sustainability
In the Snowdonia North Wales area.
Next: 2.) Use this as the foundation for building a sustainable energy plan...

21. The results
The group gets 24% of its transport, heating
And electric energy from renewable sources
Group breakdown National breakdown

22. Energy use per person breakdown
A B C D E F G H I J K L M N O P

23. Electricity consumption breakdown
A B C D E F G H I J K L M N O

24. Thank you for listening.