Hardware development update

1. OpenEnergyMonitor
Hardware Developments
Glyn Hudson 30/05/14 @openenegymon

2. Current Hardware

3. emonTH - Room Temperature / Humidity Node
emonTx - Power Monitoring Node
RFM12Pi - Raspberry Pi BaseStation
Receiver Node
emonGLCD - Display Node
Current Hardware

4. 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!

5. 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

6. emonPi - Prototype
https://plus.google.
com/b/114424977493521882459/photos/+OpenenergymonitorOrgpage/albums/5999656723837107313

7. emonPi - Enclosure Prototype

8. emonGLCD
● Wireless LCD display
● Useful ‘glanceable’ display
● Real-time indicator of solar PV
import / export
● Built in room temperature sensor
● Easily customisable
● Control buttons

9. Open-source Customisable -
community developments:
HeatPump Diagram
emonGLCD: http:
//youtu.
be/UrLSAy5oyYw
Heating Control emonGLCD
http://openenergymonitor.blogspot.co.
uk/2013/11/adding-control-to-emoncms-rfm12b-packet.

10. Current emonGLCD - DIY kit only

11. emonGLCD - New Version
● Pre-assembled SMT
design
● Nice enclosure
● RGB LCD
● New RFM12B69CW
module

12. 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?