There are lots of examples on the internet on how to build Arduino from scratch such as IN THIS LINK. I will like to do the same but with the esp32.
I have this development board:
And I am able to program it with the Arduino framework/IDE thanks to THIS VIDEO.
Now the question
How can I flash my code and run it on a standalone ESP-WROOM-32 chip like this one:
I do not want to use voltage regulator etc as I am planning to run it from a 3.3V battery.
Before asking this question this was my research:
In this video (https://www.youtube.com/watch?v=n43rHugPbTg) Hugatry does exactly what I am looking for but he does not explain what pins he is using. Moreover what happens if I connect my 5v serial to the chip? will it burn?
I went directly to espressif website and looked for the schematics (https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf). It is hard to understand I just want to do something simple.
This blog (http://blogs.oregonstate.edu/copaps/resources/programming-esp32-on-custom-pcb/) explains how but the pins are different than my esp-wroom-32 chip.
Looking more on the internet/youtube everyone explains how to solder it. But I haven't found a diagram that will enable me to flash it and run my code. Also will I have to burn a bootloader like with arduino?
What I am about to try is to buy a 5V to 3.3V serial converter connecting TX with RX and RX with TX. Providing 3.3V power to the 3.3V pin and connect the last cable to ground. If I try that will it work?