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marc02/02/2020
Device received is revision 8 (latest is rev 10 from aug 2019), comes preflashed with SoftRF release 1.0-rc7.
Just add an 18650 battery (careful about polarity, clearly marked on the board), charge it over USB and you are ready to go.
Interna WiFi access point allows configuring the firmware (password 12345678, connect to 192.168.1.1), notably enabling BT and NMEA output over Bluetooth to make it a perfect complement to xctrack, xcsoar and lk8000 glider software running on a tablet or smartphone.
GPS is a uBlox neo-6m, not the very latest (there is another more expensive board sold with an 8m) but sufficient for my purposes.
A useful addition is a BMP280 barometric pressure sensor on the I2C port (the firmware recognizes it at boot, just like bmp085, bme280, and mpl3115a2 - probably bmp180 as well).
You can also add a small 0.96 inch OLED display, which will display the glider ID, protocol, and rx/tx counters.
The firmware sources and other project files are available on https://github.com/lyusupov/SoftRF - looking forward to add some bells and whistles :-)
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