Archived Forum

- To operate emonTx must necessarily an Arduino? No, you have all that you need.

- Can you connect on Wifi instead of ethernet cable to the gateway? How?  Yes, see http://openenergymonitor.org/emon/node/5146#comment-21277

Thank you for your answers,So there is no manipulation to the emonTx? because I tried with all that I turning on the RPI, so the script runs (I have sd card preconfigured) but I have the impression it does not detect the emonTx.

The emonTx already has a sketch loaded https://github.com/openenergymonitor/emonTxFirmware/tree/master/emonTxV3... therefore, if you have the same radio frequency (433 MHz or 868 MHz) for your emonTx and your RFM12Pi modules, it should work.

How are you powering your emonTx? If you do not have the AC adapter, you must use either the 5 V USB power or you must connect batteries. Do you see a flashing red LED when you apply power?

I may have forgotten to tell you that I use a emonTx shield V2, it changes you something?

If you have an emonTx shield that is very different,

Yes you must have an arduino to attach the shield to. Because the shield is just an interface that provides an RF transceiver and connects all your inputs to the arduino, which is the main processor circuit that will have the sketch loaded to.

As Paul says, when you have an emonTx Shield you must have an Arduino, and you must also have a way to program it. You will find the emonTx Shield sketches also on GitHub, but in a slightly different place.