[ianburrell]

One example that I'm working on is GPS receiver and NTP server. Accuracy requires PPS signal through GPIO. It would be possible to wire up GPS receiver board to microcontroller. But still need server to run NTPd. Or could put GPS Hat on Raspberry Pi and have everything in one unit. It will run on the cheapest $35 Pi, or extra one in my case.

Another I have thought doing is ADS-B receiver mounted outside. It helps to put the receiver close to antenna so would put the SDR and Pi in enclosure, and power it from PoE. Microcontroller can't run the SDR. Micro PC is overkill and wouldn't work in enclosure. Doesn't use GPIO pins.

[graphe]

Very interesting, I haven't used gps but that definitely does need more power (or optimizations). Have you heard of this? https://hackerwarehouse.com/product/portapack-h2-for-hackrf-...

Linux would probably be very easy to built without needing firmware