echo wind
I basically bought the adsb exchanger started kit.
1070 Receiver, antenna, preprogrammed sd card.
Attached it all to a poe powered pi zero 2 and I have only seen 1 plane over night. I live close to an airport and the antenna is in a big bay window facing the airport.
I feel the pi is not setup to read from the usb SDR but I can find any logs, graphs or anything to know if it is all working.
oblique cosmos
If it goes outside does it see more aircraft?
tropic geode
You'll find logs at http://adsbexchange.local/info/. readsb.service would the the one to look for if suspecting issues talking to the SDR. Graphs at http://adsbexchange.local/graphs1090/
If possible, try powering the Pi with a proper supply (ideally an official RPi one), to rule out PoE inadequacy.
echo wind
This seems suspicious:
Jan 23 14:51:23 adsbexchange readsb[554877]: 30002: Raw TCP output port
Jan 23 14:51:23 adsbexchange readsb[554877]: 30005: Beast TCP output port
Jan 23 14:51:23 adsbexchange readsb[554877]: 30154: Position json output port
Jan 23 14:51:23 adsbexchange readsb[554877]: 30003: SBS TCP output ALL port
Jan 23 14:51:23 adsbexchange readsb[554877]: 30001: Raw TCP input port
Jan 23 14:51:23 adsbexchange readsb[554877]: 30004: Beast TCP input port
Jan 23 14:51:23 adsbexchange readsb[554877]: 30104: Beast TCP input port
Jan 23 14:51:23 adsbexchange readsb[554877]: 30152: API output port
Jan 23 14:51:26 adsbexchange readsb[554877]: FATAL: rtlsdr: no device matching '1090' found.
tropic geode
Indeed that would be a problem! Is there anything under "Installed SDR serials" on the info page?
tropic geode
hmmm. So go to http://adsbexchange.local/sdr-assign/ - it should already have 1090 selected, but anyway click "Save & restart services". Does the "no device ... found" error recur?
echo wind
Same error after restart
I have no issues with sshing into the pi and running commands if that is helpful
tropic geode
output from sudo rtl_test might be interesting. You might have to sudo apt update && sudo apt install rtl-sdr if it's not already installed (I don't remember if the image has it)
echo wind
Jan 23 16:35:10 adsbexchange systemd[1]: Stopped readsb.service - readsb ADS-B receiver.
Jan 23 16:35:10 adsbexchange systemd[1]: Started readsb.service - readsb ADS-B receiver.
Jan 23 16:35:10 adsbexchange readsb[631620]: invoked by: /usr/bin/readsb [REDACTED]
Jan 23 16:35:10 adsbexchange readsb[631620]: [2026-01-23 16:35:10.515 UTC] readsb starting up.
Jan 23 16:35:10 adsbexchange readsb[631620]: readsb version: 3.14.1631 adsbexchange git: eea98b1 (committed: Mon Jun 17 09:18:43 2024 -0700)
Jan 23 16:35:10 adsbexchange readsb[631620]: Using lat: [REDACTED], lon: [REDACTED]
...
Jan 23 16:35:10 adsbexchange readsb[631620]: FATAL: rtlsdr: no device matching '1090' found.
Jan 23 16:35:10 adsbexchange readsb[631620]: rtlsdr: found 1 device(s):
Jan 23 16:35:10 adsbexchange readsb[631620]: 0: , , SN:
Jan 23 16:35:10 adsbexchange readsb[631620]: [2026-01-23 16:35:10.817 UTC] sdrOpen() failed, exiting!
Jan 23 16:35:10 adsbexchange readsb[631620]: [2026-01-23 16:35:10.826 UTC] Abnormal exit. uptime: 0d 0h 0m 0.312s
Jan 23 16:35:10 adsbexchange systemd[1]: readsb.service: Main process exited, code=exited, status=1/FAILURE
Jan 23 16:35:10 adsbexchange systemd[1]: readsb.service: Failed with result 'exit-code'.
Yeah, something not right there. Again, I'd want to see if this happens with a proper power supply. Then maybe try the SDR on a different device (PC or something) to see if it's defective, or something to do with the Pi
echo wind
Allocating 15 zero-copy buffers
Failed to submit transfer 0
Please increase your allowed usbfs buffer size with the following command:
echo 0 > /sys/module/usbcore/parameters/usbfs_memory_mb
Library error -5, exiting...
rtlsdr_write_reg failed with -4
tropic geode
if you have another SDR lying around (doesn't have to be a 1090 one), it'd be interesting to see what that does too
echo wind
I had to remove a lot to get it to fit in a message
I dont have another sdr at this second
tropic geode
well you have something to chase now anyway...
echo wind
ill try it in another computer and try a different power source
as feedback, if the sdr are not running or failed all the green status bars probably shouldnt be
echo wind
SDR on windows computer seems to be working as expected.
tropic geode
Something with the Pi, then... still suspect power supply first