"It seems my dataflash fell off after a hard landing, and I'm getting the same error (which makes sense now that I know it fell off). Where can I buy one of those (online) components separately? Thanks!"
"Thanks for your answer!
But I wonder how did you connect the FrSky module to the Arduino UNO board? Have you used a level stepper, voltage divider, or anything else between both devices?
Or did you connect the FrSky back Tx/Rx pins directly to the…"