Can i display messages on a display from the pi

PrzemekWasinski · April 16, 2024, 12:15pm

Is it possible to attatch a display onto the pi and have it display messages for example “Airbus A320 is flying over 200m away from you” ive got a python program that does this all i need for it to work is a way to get the current plane’s flight number or call sign and then run the python program and display the output on the attatched screen, does information like call sign or flight number get saved in a file somewhere on the pi?

foxhunter · April 17, 2024, 6:33pm

Depends how you have set it up.

dump1090 (the default decoder on a FA install) temporary stores this information in a JSON file on the device, named aircraft.json

See the details here:

github.com

SDRplay/dump1090/blob/master/README-json.md

# JSON output formats

dump1090 generates several json files with informaton about the receiver itself, currently known aircraft,
and general statistics. These are used by the webmap, but could also be used by other things
e.g. [this collectd plugin](https://github.com/mutability/dump1090-tools/tree/master/collectd) feeds stats
about dump1090's operation to collectd for later graphing.

## Reading the json files

There are two ways to obtain the json files:

 * By HTTP from dump1090's internal webserver, which defaults to running on port 8080. The json is served from the data/ path, e.g. http://somehost:8080/data/aircraft.json
 * As a file in the directory specified by --write-json on dump1090's command line. These can be exposed via a
   separate webserver.

The HTTP versions are always up to date.
The file versions are written periodically; for aircraft, typically once a second, for stats, once a minute.
The file versions are updated to a temporary file, then atomically renamed to the right path, so you should never see partial copies.

Each file contains a single JSON object. The file formats are:

This file has been truncated. show original

As far as i know there are already tools exist which share alerts on Twitter if there are any defined aircraft in range. So it should be possible to display the information

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Can i display messages on a display from the pi

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