@oleksii
What tags are you using?
What reading distance can you currently archive?

Hi,

I just got myself a new UHF RFID JRD-4035 board and a M5Fire.

I flashed the "UHF-RFID Test" image from here and started it:
https://docs.m5stack.com/en/unit/uhf_rfid

I immediately get the "Warning 15" displayed on the screen.

Anybody got an idea why this happens and what I can do about it?

Best,
Gerwin