OpenEnergyMonitorHardware Developments

Glyn Hudson 30/05/14 @openenegymon

Current Hardware

emonTH - Room Temperature / Humidity Node

emonTx - Power Monitoring Node

RFM12Pi - Raspberry Pi BaseStation Receiver Node

emonGLCD - Display Node

Current Hardware

Separate Sensor and Base Station

Advantages● Base station can be located next

to ADSL router and connected with Ethernet

● Easily add additional wireless nodes

Disadvantages● Wireless comms between units

added extra layer of complication ● Increased cost● Wireless range can be issue● More units = more potential

things to go wrong!

Introducing: emonPi ● Combined power monitoring and

Raspberry Pi base station ● All-in-one power monitoring

solution● Integrated 2.5” HDD for local

logging and webserver ● Complement current emonTx

solution● Raspberry Pi can be connected

via wifi (or Ethernet) for remote logging

● Optional status LCD● Open-source design thread http://openenergymonitor.org/emon/node/3937

emonPi - Prototype

https://plus.google.com/b/114424977493521882459/photos/+OpenenergymonitorOrgpage/albums/5999656723837107313

emonPi - Enclosure Prototype

emonGLCD● Wireless LCD display● Useful ‘glanceable’ display ● Real-time indicator of solar PV

import / export ● Built in room temperature sensor● Easily customisable● Control buttons

Open-source Customisable - community developments:

HeatPump Diagram emonGLCD: http://youtu.be/UrLSAy5oyYw

Heating Control emonGLCDhttp://openenergymonitor.blogspot.co.uk/2013/11/adding-control-to-emoncms-rfm12b-packet.html

Current emonGLCD - DIY kit only

emonGLCD - New Version● Pre-assembled SMT

design● Nice enclosure● RGB LCD● New RFM12B69CW

module

emonGLCD - Enclosure Design

● Low embodied energy ● Medium quantity: batches of 500 - 1000 PCS● 3D print to prototype ● Injection mould? ● Eco wood plastic? Biodegradable / recyclable

plastic ● Local facilities for prototype design and

manufacture?