We have the same issue. ESP32 always takes 30 to 40 seconds to connect to audio sink. Because of this issue, we are moving to another microchip vendor.

Also see this threads:
https://github.com/espressif/esp-idf/issues/15913
viewtopic.php?t=45508

We are using Audio Source example A2DP_SOURCE with ESP32 development board. Connecting to remote external headphones takes too long time: anywhere from 20 seconds to 1 minute. I have 4 different headsets from 4 different manufacturers, but the A2DP_SOURCE example has trouble to connect to most of ...

UART receives incorrect first two bytes if there was no RX communication for a few seconds. If communication goes continuously, no errors occurs.

The chip hardware version 3.0 ESP32-Pico development board works OK. I can see it only with 3.1 ESP32-U4WDH chip. In both ESP IDF versions, v5.1 and v5.4 ...

We are trying to upload binaries to ESP32-U4WDH using Serial Protocol found at:

https://docs.espressif.com/projects/esptool/en/latest/esp32/advanced-topics/serial-protocol.html

but it does not work.

We cannot use esptool.py in the production because the device we are making does not have space ...

We are trying to upload binaries to ESP32-U4WDH using Serial Protocol found at:

https://docs.espressif.com/projects/esptool/en/latest/esp32/advanced-topics/serial-protocol.html

but it does not work.

We cannot use esptool.py in the production because the device we are making does not have space ...

Is it possible to provide an external clock signal to the ESP32-PICO-V3 chip?

We have few other MCUs on the board and a centralized high-quality 40MHz crystal on it. Particularly, it defines audio sampling rate, which we would like to send over Bluetooth A2DP to the speakers using ESP32.

But if ...