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Glyn Hudson 2016-11-29 13:14:04 +00:00
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**Low power wireless temperature and humidity node**
V2.0 hardware revision adds support for SI7021 temperature and humidity. This sensor brings performance and power savings over the DHT22, see `sensor_test` folder of this repo for sensor evaluation and comparison.
*V2.0 hardware revision adds support for SI7021 temperature and humidity. This sensor brings performance and power savings over the DHT22, see [sensor](sensor) folder of this repo for sensor evaluation and comparison.*
The emonTH V2 is an open-source, wireless, battery powered temperature and humidity monitoring node.
Data from the emonTH is transmitted via wireless RF (433MHz) to an emonPi / emonBase web-connected base-station for logging to Emoncms for data logging, processing and graphing.
![emonTH V2](hardware/emonth2.jpg)
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![emonTH V2](hardware/emonth2.png)
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### Open-Hardware
- Hardware schematic & CAD files are in the `hardware` folder of thisw repo
- Hardware schematic & CAD files are in the `hardware` folder of this repo
- See [emonTH V1 Technical Wiki](https://wiki.openenergymonitor.org/index.php/EmonTH_V1.5) for more hardware design notes.
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### Related Blog Posts
- [Introducing emonTH V2](https://blog.openenergymonitor.org/2016/11/introducing emonth-v2)
- [Optical Pulse Counting with emonTH](https://blog.openenergymonitor.org/2015/09/optical-pulse-counting-with-emonth/)
- [emonTH V1 Prototype](https://blog.openenergymonitor.org/2013/06/emonth-prototype/)
- [emonTH V1 Hardware Design](https://blog.openenergymonitor.org/2013/10/emonth-update-hardware/)