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Fixed title. Fixed grammatical typos, corrected volts units (v->V), fixed list formatting, removed code formatting from the chip/board names, added code formatting to file name, and error message. Inlined the link. A number of issues still remain however.

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edit approved Apr 20, 2015 at 21:50

Greenonline

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Using the ATMega328, from an Arduino UNO in a Standalone configuration, and bootloader -i I am really lost

I am really despaired .i I have spent a full day to understand thatthis, and it seems that iI still dont don't.

I have arduino UNOan Arduino UNO,with atmega328 with an ATMega328, infor which iI wrote a great piece of code to it. Later

Later,i I have buildbuilt a circuit on a bread board,where i where I want to use that atmega328same ATMega328, in a 3.3v3V configuration , and hence 8MHz oscillator .

So, iI understood that iI have to write a new boot loader to it (is that correct? )

So iI follow any guidemany guides available in there, including thisthe : http://arduino.cc/en/pmwiki.php?n=Main/StandaloneArduino Standalone

, and than ithen I understood that i dontI don't have another chip (atmega328ATMega328) ,in in order to use the UNO as a boot loader .

So ,i I was trying to connect the atmega328ATMega328 directly from the bread board to the UNO's serial data, change the boards.txtboards.txt file to add "atmega"ATMega on bread board 8MHz" , and tried to boot-loading it, with outwithout success .(error that cant connect with I get the board)error that it can't connect with the board.

Now iI have been told that i cantI can't connect the atmega328ATMega328 directly to the UNO serial to boot-load load it, so my questions are :

do iDo I really need to go over this hell in order to work with the same chip chip that worked with 16MHz16MHz, but now on 8MHz and 3.3v ???8MHz at 3.3V? (why in in microchip iI could just switch xtal? )
If I do have to boot loading it, and I have one chip, and an UNO, how can I do that?

How you do that in mass production?

2.if i do have to boot loading it , and i have one chip , and UNO, how can i do that ?

how you do that in mass production ?

thanks .

Arduino UNO and bootloader-i am really lost

I am really despaired .i have spent a full day to understand that, and it seems that i still dont .

I have arduino UNO,with atmega328, in which i wrote a great piece of code to it. Later,i have build a circuit on a bread board,where i want to use that atmega328, in 3.3v configuration , and hence 8MHz oscillator .

So, i understood that i have to write a new boot loader to it(is that correct? )

So i follow any guide available in there, including this : http://arduino.cc/en/pmwiki.php?n=Main/Standalone

and than i understood that i dont have another chip(atmega328) ,in order to use the UNO as a boot loader .

So ,i was trying to connect the atmega328 directly from bread board to the UNO's serial data, change the boards.txt file to add "atmega on bread board 8MHz" , and tried to boot-loading it, with out success .(error that cant connect with the board)

Now i have been told that i cant connect the atmega328 directly to the UNO serial to boot-load it, so my questions are :

do i really need to go over this hell in order to work with the same chip that worked with 16MHz, but now on 8MHz and 3.3v ???? (why in microchip i could just switch xtal? )

2.if i do have to boot loading it , and i have one chip , and UNO, how can i do that ?

how you do that in mass production ?

thanks .

Using the ATMega328, from an Arduino UNO in a Standalone configuration, and bootloader - I am really lost

I am really despaired. I have spent a full day to understand this, and it seems that I still don't.

I have an Arduino UNO, with an ATMega328, for which I wrote a great piece of code.

Later, I have built a circuit on a bread board, where I want to use that same ATMega328, in a 3.3V configuration, and hence 8MHz oscillator .

So, I understood that I have to write a new boot loader to it (is that correct?)

So I follow many guides available, including the Arduino Standalone, and then I understood that I don't have another chip (ATMega328), in order to use the UNO as a boot loader.

So, I was trying to connect the ATMega328 directly from the bread board to the UNO's serial data, change the boards.txt file to add "ATMega on bread board 8MHz", and tried to boot-loading it, without success. I get the error that it can't connect with the board.

Now I have been told that I can't connect the ATMega328 directly to the UNO serial to boot load it, so my questions are:

Do I really need to go over this hell in order to work with the same chip that worked with 16MHz, but now on 8MHz at 3.3V? (why in microchip I could just switch xtal? )
If I do have to boot loading it, and I have one chip, and an UNO, how can I do that?

How you do that in mass production?

Source Link

asked Dec 3, 2014 at 16:54

Curnelious

Arduino UNO and bootloader-i am really lost

I am really despaired .i have spent a full day to understand that, and it seems that i still dont .

So, i understood that i have to write a new boot loader to it(is that correct? )

So i follow any guide available in there, including this : http://arduino.cc/en/pmwiki.php?n=Main/Standalone

and than i understood that i dont have another chip(atmega328) ,in order to use the UNO as a boot loader .

Now i have been told that i cant connect the atmega328 directly to the UNO serial to boot-load it, so my questions are :

do i really need to go over this hell in order to work with the same chip that worked with 16MHz, but now on 8MHz and 3.3v ???? (why in microchip i could just switch xtal? )

2.if i do have to boot loading it , and i have one chip , and UNO, how can i do that ?

how you do that in mass production ?

thanks .