For whatever reason I can't flash anything to them neither using Arduino IDE nor using esptool.py. No matter what I do - I always receive "Failed to connect to Espressif device: Timed out waiting for packet header". For all 5 chips - same behavior.
I can connect to the device using minicom, and on "reset" it greets me with cryptic message
Code: Select all
brlrl
ready
So at least the chips and the board itself are operable.
I tried to connect UART pins of the burner to CH340 adapter I have and then flash it - basically the same result.
I tried to press "flash + reset" and then release "flash" during that "Connecting..." prompt - no luck.
The same USB cable works just fine to flash NodeMCU boards, but I wonder if I am missing something with this one.