Everything it does.
The radar, the alarm, the broadcast, the phone, the instruments.
Try it.
It is the software inside skyBlip.
Screen:
Hold the lower key to switch it back on.
ATT
Fly it from the keyboard, the arrows like a stick: down to climb.
↓ ↑climb, descend ← →turn left, right F Sfaster, slower Tadd trafficOne to eight aircraft come and go, each sending real ADS-L frames, plotted as in flight. The lamp on the left lights when one sets off the alarm.
What next?
Screen by screen.
Seven guides, one per subject, with captures from this same firmware.
Your own.
A LilyGO T-Echo or T-Echo Plus, the skyBlip firmware, and it is ready.