Project idea: figure out a way to cram an ESP32 into an SD card.
Searching 'wifi sdcard' and I found several vendors still making those cards, but I haven't used any of the newer ones.
I have no idea what the original FlashAir software looks like. Never even occurred to me to try it—just assumed it would be a nightmare.
But it works fine in my old Nikon with PhotoSync on iOS!
They can also connect to phones/tablets/websites but you need apps/services.
ftp direct from camera:
https://gdlp01.c-wss.com/gds/5/0300024975/01/eos5d-mk4-wff-i...
page 113
link is: EOS 5D Mark IV (WG) Wi-Fi (Wireless Communication) Function Instruction Manual
What’s more annoying is that automatically adding geolocation data for photos requires a Bluetooth link to a phone via their app which seems pretty unreliable and sometimes messes up the ftp uploads. Older canon dslrs had built in GPS.
