ADSB_Alert
Experiments with a ADSB warning device
Inspired by MustardTiger on the ExpressLRS discord (see https://github.com/PicoADSB), I'm trying out a simple ADSB receiver using R820T for the tuner and STM32H7 for the processing. The aim is to create a simple portable ADSB monitor that can alert a pilot to close-by traffic.
Initial prototyping and testing is being done with the R820 beakout board by Eric Brombaugh https://github.com/emeb/r820t2, and a WeAct studio H723 development board https://github.com/WeActStudio/WeActStudio.MiniSTM32H723
Current status: Testing with LCD and ePaper displays to see what might be practical
Testing with multiple displays to check what is possible with the single processor doing message decoding and UI
Preamble and first 5 bits of a DF17 packet. Sampled at 8 msps, dc offset removed, rectified and filtered
Acknowledgements and Licenses
This project builds on the work of several open source projects whose work is gratefully acknowledged. I need to gather together the complete list and the Licenses of each. Obviously at the moment this project is at a very early stage and things are considerably in flux, but I'd like to mention the following while I'm getting my act together:
- Code for initialising the R820T from https://github.com/emeb/r820t2
- Code for decoding ADSB message from https://github.com/antirez/dump1090
- The LCD driver and graphics library from https://github.com/deividAlfa/ST7789-STM32-uGUI
- Algorithms for handling coordinates from https://www.movable-type.co.uk/scripts/latlong.html
- Excellent ADSB documentation from https://mode-s.org/decode/index.html
- E-paper driver and graphics library from https://github.com/waveshareteam/e-Paper
- ST7796 Driver from http://www.lcdwiki.com/3.5inch_IPS_SPI_Module_ST7796