Arduino UNO uC replacing

Other Hardware 3rd Party Boards
1

Hello, I´m new at programing and microcontrollers, so I recently found out i can use the ATmega328P-PU without the Arduino UNO board, or even buy a new one to leave it permanently on a project.
Looking in the forum i learned some ways to burn the bootloader on a new ATmega328P-PU, but always using extra hardware or the Arduino UNO board as an ISP,then i can remove the original microcontroller and replace it by this one just bootloaded to update sketchs to it, to finally remove it once the code i want is working and leave it permanently "standalone". My questions goes as follows:

When i use Arduino UNO as an ISP to bootload a new microcontroller, i need to have always one ATmega328P-PU ALREADY working and bootloaded?

I will always need to have at least ONE ATmega328P-PU bootloaded and ready to use if i dont want to get extra hardware?

Thanks to everyone, i´m new to this and im really happy learning this :smiley:

PD: Im sorry if my syntax is wrong anywhere or the post is confuse, english not first language :slight_smile:

2

Yup bootload a 328p, you need either a working (ie, bootloaded) Arduino or Arduino-alike (Like Arduino on breadboard or something else that works with ArduinoAsISP sketch) rubbing Arduino as isp sketch and reset disabled (10uf cap between reset and ground), or you need a dedicated isp programmer.

You can get a usbasp " eBay for 2-3 bucks shipped (that's my favorite, because of the gui tool "eXtreme burner avr" that only works with the asp, and lets you easily see and edit flash, eeprom and fuses)

3

You can also buy the chips preloaded with the boot loader usually it'll run you maybe 1 dollar more or so , further more if you ever want to NOT use arduino boot loader you can get a programmer and use Atmel Studio .

4

Or use Nick Gammon's bootload installer sketch.

Or a standalone programmer like this one, running a version of Nick's sketch.
http://www.crossroadsfencing.com/BobuinoRev17/Programmer.html