I'm completely new to electronics work.
Today I've received the ESP32 board that I ordered. (It's a WROOM-32.) I followed the instructions here. I connected the board to my computer via USB and I successfully installed the CP210x drivers and got a new serial port COM3, but when I tried to connect to the board with that serial port, I got nothing. I'm on Windows 7.
I tried with Tera Term, and it just shows an empty screen.
type COM3 in the shell, but got an empty string.
I tried doing
esptool.exe --chip esp32 -p com3 erase_flash, but I get "Failed to connect to ESP32: Timed out waiting for packet header".
I tried playing with the two buttons on the WROOM32 board, but that didn't help.
Any idea what I'm doing wrong? I'm a complete newbie so it's likely that I'm forgetting something basic.