Introducing the emonTx Shield

The OpenEnergyMonitor project started in 2009 playing about with an Arduino Duemilanove. Since then the project has very much built on the Arduino platform, both hardware and software. 

We love Arduino, it's fantastic how quick and easy Arduino makes it is to get started blinking an LED and or reading an analoge voltage level.

With that in mind it's with great pride that we are launching an Arduino compatible emonTx Energy Monitoring Shield to make getting started in energy monitoring just as easy. 

We are very pleased that the emonTx shield is compatible with the new Arduino Leonardo as well as the Uno and Duemilanove. 

The emonTx Shield has got four CT current sensor inputs, an AC voltage sample input, on-board temperature sensor and RFM12B wireless transceiver. With just a CT sensor the shield can monitor current and apparent power. With the addition of an AC-AC adapter to provide an AC voltage sample the shield can monitor real power, AC RMS voltage and power factor. 

The inclusion of the RFM12B wireless transceiver enables the emonTx shield to integrate with other OpenEnergyMonitor modules such an an emonGLCD display unit an emonBase web-connected base-station for logging an visualisation with emoncms. 

The emonTx shield is now available as a full kit (with or without the RF module) or PCB only in the OpenEnergyMonitor shop. 

As with all OpenEnergyMonitor hardware modules it's fully open-source, fully documented and has got plenty of Arduino example software sketches. Follow the links from the main documentation page: http://openenergymonitor.org/emon/emontxshield

The emonTx Shield is based on the popular emonTx a low power stand-alone energy monitoring unit. The stand-alone original emonTx is better suited to long term energy monitoring installations and/or low power operation. The original emonTx can also be bought in kit form from the OpenEnergyMonitor shop.    

If you have any questions or run into problems please post on our active community forums. 

Thank you to everyone who has helped contribute to the project.