I just returned to my IoT project. Pulled esp32 from box, connected with usb cable to raspberry pi, did minicom -D /dev/ttyUSB0 and .... nothing. No reaction to my input, help() doesn't work. No output.

Have I bricked another ESP32?

I thought so, then I started to play with options …

ESP32 for Pycopy (Pfalcon's Micropython) can be downloaded here.

More details

TL;DR: press 'boot' button when flashing ESP32. At least some of them.

I have connected newly bought ESP32 to usb cable and try to flash it with micropython image.

(micro) maho@dlaptop:~$ esptool.py --port=/dev/ttyUSB0 erase_flash
esptool.py v2.6
Serial port /dev/ttyUSB0
Connecting........_____....._____ …

UPDATE

Pycopy's ESP32 image can be downloaded here

If you ecounter following problem:

    TypeError: function takes 2 positional arguments but 3 were given

while trying to use uasyncio and micropython - then to save your time, learn a bit about current situation in project:

There is fork war between Micropython and …

While I'm IoT, my servo is humming in almost every position. I hear annoying noise every time it's not moving.

After asking Dr. Google, I know that: servo is bad and I need to use another one, or is set to position which it unable to achieve and need to …