ARLA/CLUSTER: Disponível descodificador de telemetria por satélite com um Raspberry Pi do FUNcube

[João Costa > CT1FBF]

Raspberry Pi FUNcube satellite telemetry decoder now available

The *FUNcube Team* has announced the availability of FUNcube CubeSat
satellite telemetry decoder software for the popular *Raspberry Pi* computer
board.

The original FUNcube telemetry decoder and Dashboard was designed to run on
Windows devices and the FUNcube team did publish the telemetry format in
accordance with the Amateur Satellite Service traditions and requirements.
The Team had planned to opensource the Telemetry Decoder and provide an
implementation on Linux, but several new missions after the original
FUNcube-1 delayed their plans somewhat.

Late 2019, the Team had the opportunity to develop a low power/low impact
ground station, based on Docker containers, for use at the Neumayer III
Antarctic base at DP0GVN. This led us to evolve the code such that it would
run on a Raspberry Pi. *Duncan, 2E0GTV*, has been able to produce this
variant of the code and allow us to fully realize our Open Source
commitment to the FUNcube project.

The Linux implementation is suitable for use on Raspberry Pi versions from
2B+ to 4 and with a FUNcube dongle (Pro or Pro+). The software will tune a
dongle to search for and track all three FUNcube compatible spacecraft
currently operational. The Telemetry Decoder is configured with five active
decoders operating concurrently so it can deal with situations where more
than one of the spacecraft are overhead at the same time.

The decoder and warehouse uploader run as a Docker container for
convenience shell scripts have been provided to launch the container in one
of two modes:

• “Interactive Mode� is when the Telemetry Decoder operates in the
foreground , when FUNcube compatible telemetry is received, the
corresponding hex data is displayed on the terminal screen.

• “Background Mode� allows the telemetry decoder to run as a Docker image
in the background where it operates much like any other background service
on Linux. This mode allows for the automatic restarting of the telemetry
decoder after a shutdown or reboot of the Raspberry Pi, therefore making it
suitable for a remote deployment situation.

*Both modes, when connected to the internet, will upload the received data
to the FUNcube Data Warehouse and the totals displayed on the Ranking Page
in the normal manner.

*Uploading to the warehouse requires online registration with the FUNcube
Data Warehouse.

All the code for the telemetry decoder, and the scripts to build the Docker
images, are now published online under a GPL Open Source License at the
FUNcube-Dev GitHub account
https://github.com/funcube-dev

Alternatively, it possible to buy a pre-formatted microSD card for the Pi
from the AMSAT-UK shop at
https://shop.amsat-uk.org/

Full instructions can be downloaded at
https://tinyurl.com/RPi-FUNcube-Decoder

FUNcube Data Warehouse
http://warehouse.funcube.org.uk/missions
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