Why adding RFM69 compatibility to OpenMqttGateway

The next release of OpenMQTTGateway will introduce the compatibility with RFM69 transceivers based on the work of lowpowerlab and bbx10.

After some discussions about what will be the new module for OpenMQTTGateway we concluded that the rfm69 from HopeRF would be a good candidate. I did the implementation with the most powerfull variant of RFM69 the RFM69HCW.

It offers in one module :

Emission and reception
It support multiple frequencies 315, 433, 868 and 915mhz
It has a range of several hundred meters
It has acknowledgment, you know when the data sent has been received by the recipients
It can adapt its power related to the distance between sender and receiver

In some word you can now have mqtt data from far sensors with low power consumption.

This first implementation support the rfm69 library which make it compatible de facto with moteinos low power boards.

A second step could be to integrate the library from jeelabs to be compatible with jeenodes and openenergymonitor.

And we can also explore the replacement of the base RF receiver and emitter of the gateway, maybe a big work to do...

As you see there is a lot of things to build and explore with rfm69 !

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