@sarahdal , I use ZED-F9P together with SBC Olimex A20-OLinuXino-LIME2.

Here I shared some details: https://wiki.openstreetmap.org/wiki/User:Vazhnov_Alexey/Record_GNSS_traces

I couldn't achieve using precision correction, unfortunately: https://community.openstreetmap.org/t/wroclaw-high-precision-gnss-tracks/92143

#OlimexA20

User:Vazhnov Alexey/Record GNSS traces - OpenStreetMap Wiki

https://www.youtube.com/watch?v=3_bHeSe88DE&list=PLW_oRrdNdnFlJE-HTd61mxSStoAsik5kV#wfdsink-allwinner-20150819rzr# : #ArmBian on #OlimexA20 micro #AllWinner : kernel:[ 4588.423210] Internal error: Oops: 5 [#1] SMP THUMB2 , Linux arm 5.8.10-sunxi #20.08.3 SMP Fri Sep 18 15:56:56 CEST 2020 armv7l #GNULinux any clue ? contact me: https://purl.org/rzr/
wfdsink-allwinner-20150819rzr.mp4

YouTube
#APPSD is the name of the card in my #OlimexA20 Micro 's #mmc controller and here is graph from my #usb #sdcard reader on other desktop computer , how to explain the saw pattern ?