The encoding process is relatively light on resources, and an Arduino should be perfectly capable of running this code.
The intent of this library is to foster experimentation with e.g. automated beacons. FT8 already supports free-text messages and the upcoming new version will support raw telemetry data (71 bits).
Work is in progress (possibly taking forever) to explore decoding options. On a fast 32-bit microcontroller decoding might be possible, perhaps with some tradeoffs.
I am working on the revised FT8 protocol with 77-bit payload (introduced since WSJT-X version 2.0), and currently the library supports the basic message set:
You can generate 15-second WAV files with your own messages as a proof of concept or for testing purposes. They can either be played back or opened directly from WSJT-X. To do that, run ```make``` and build ```gen_ft8```. Then run it. Currently messages are modulated at 1000-1050 Hz.
Thanks to Robert Morris, AB1HL, whose Python code (https://github.com/rtmrtmrtmrtm/weakmon) inspired this and helped to test various parts of the code.
This would not of course be possible without the original WSJT-X code, which is mostly written in Fortran (http://physics.princeton.edu/pulsar/K1JT/wsjtx.html). I believe that is the only 'documentation' of the FT8 protocol available, and the source code was used as such in this project.
