Arduino - transferring the solution to the microcontroller, how?

Question

Arduino

Tell me: I understand correctly that to work with the arduino uno board, you can take a bare atmega controller (the same as on the board, for example atmega328p), pull out the standard controller chip, install a new one - it will work the same as the original one, without any additional preparations?
Those. I just want to pour my sketch into a separate crystal (the same microcircuit), which I then want to use separately from the arduino.
Upd. Actually, the answer to the question was found easily - indeed, you need to flash the bootloader into the "naked" crystal, thanks to those who answered!

Answer 1

Well, you still need to flash the bootloader there. And do all the wiring for power and IO.

Answer 2

No. Arduino UNO is not an external programmer, the MK should already have firmware that, if powered, will accept downloadable "sketches" from UART (USB-to-TTL), and a new MK is usually sold "empty".

Answer 3

the easiest way is to have 2 arduinos... and with one arduino to sew another
, i.e. Google controller: "arduino icsp"
like that https://learn.sparkfun.com/tutorials/installing-an...

Answer 4

Yes, you can. Just before you can upload a sketch from the Arduino IDE to the microcontroller, you will need to program its FUSE bits through the ICSP interface and flash the Arduino bootloader into it.