EmonTx Arduino Shield
Revision as of 14:22, 18 October 2012 by Glyn.hudson (talk | contribs)
emonTx Arduino Shield
An open-hardware wireless energy monitoring Arduino compatible (Duemilanove,Uno and Leonardo) shield.
See non-invasive section of building blocks for theory behind CT energy monitoring.
Overview
- Apparent Power, Real Power*, Power Factor* and AC RMS voltage readings*
- 4 x CT Current Sensor input
- AC 9V RMS voltage sensor input
- 433/868Mhz RFM12B (HopeRF) wireless transceiver to transmit/receive data to other OpenEnergyMonitor and JeeNode modules
- On-board DS18B20 digital temperature sensor
- Status LED
- Compatible with Duemilanove,Uno and Leonardo
- Compatible with OpenEnergyMonitor modules (emonGLCD, emonBase - NannodeRF etc.)
* with 9V AC adapter
Design Files & Part List
- 10 x 470K (yellow, violet, yellow, gold)
- 5 x 10uF
- 4 x 33R 1% (orange, orange, black, gold, brown)
- 4 x 10K 1% (brown, black, black, red, brown)
- 4 x 4K7 (yellow, violet, red, yellow, gold)
- 4 x 3.5mm jack (Rapid: 20-0157)
- 1 x 0.1uF (100nF)
- 1 x 470R (yellow, violet, brown, gold)
- 1 x 100K 1% (brown, black, black yellow, brown)
- 1 x 2.1mm DC barrel
- 1 x RFM12B 868/433Mhz (HopeRf)
- 1 x 82mm/165mm Ant
- 1 x 3mm LED
- 1 x DS18B20 temperature sensor (optional - not included as standard)
- 1 x 6 pin ISP header (female)
- 2 x 6 pin header*
- 2 x 8 pin header*
* or 1 x 28 pin header
See OpenEnergyMonitor Shop for recommended CT and recommended plug-in AC-AC adapter
See building blocks for more information on CT's and AC-AC adapters.
The emonTx Shield schematic and board design in Eagle CAD format can be viewed and downloaded from the emonTx Shield SolderPad Git Repo
Build Guide
(In the making) WAITING FOR PHOTOS
- NEED TO MENTION SOLDER JUMPER SELECTION*
Port Map
| Function | Arduino Port |
|---|---|
| 9V AC sample | ADC0 |
| CT 1-4 | ADC 1-4 |
| DS18B20 Temperature | Dig4 |
| LED | Dig9 |
| RFM12B SS | Dig10 (recommended) / Dig5 |
| RFM12B INT | Dig3 Leonardo / Dig2 Uno |
Example Arduino Sketches
See emonTx Shield Folder in emonTx Firmware examples GitHub Repo
Follow instructions on the GitHub readme for required Arduino libraries