One more thing, the messages on the console are displayed correctly only if I select 38400 bps baudrade. On default 115200 i see only unrecognizable characters. Is this a normal behavior or suggests any problems with the clock?

Yes, i have two dev boards, the 'hello world' example (and any other) run on it without problems. I flashed my board using a USB2UART converter, from Raspbery Pi serial port and directly from RS232 laptop port via MAX3232. Always same result. In General Guidelines i found this: The ground pad at the...

Hello. I'm trying to run a 'hello world' project from IDF examples on a custom board. Chip is ESP32S3FH4R2 (integrated Flash and PSRAM). Flashing runs smoothly: esptool.py v4.7.0 Serial port /dev/ttyS0 Connecting.... Chip is ESP32-S3 (QFN56) (revision v0.2) Features: WiFi, BLE, Embedded Flash 4MB (X...