Arduino Nano Code Upload Error avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00

Very useful information.

Спасибо большое!!!!! Так легко решается, столько сайтов и никто не помог, А вы смогли! Thank you very much!!!!! It's so easy to solve, so many sites and no one helped, But you could!

Thanks so much, I had tried two PC's, two nano, different cables, head was starting to hurt from banging it against a wall.

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ATmega168 works but ATmega328p and ATmega328p(oldbootloader) doesnt work and ı need help because ATmega168 has too little storage capacity its not enough for my code, pls help

Thank You

Solved my problem. Thank you very much

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BRO THANK YOU I REALLY APPRECIATE IT I DONT KNOW HOW TO THANK YOU , IVE BEEN SOLVING THESE FOR LIKE 4 HOURS , OH MY GOD , VERY VERY THANK U FROM THE BOTTOM OF MY HEART :))))

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man....
love you man...
wish you were a girl , I could kiss you
I wasted a hole day stuck in this problem
thanks man
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Worked only once and failed on another try kindly help

Thanks I'm looking for hours

solve it!!!!

man my baord is still show the problem but its a arduino uno
what should i do

I use ic in breadboard and connect it with USB to TTL converter and my ic is Arduino Uno board

Thank you! I'm very lucky to try searching it on YT instead of trying many things of my own.

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i almost throw my nanos away, you saved them

v v vv v v helpful. THANKS ALOTTT.

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Thanks buddy, it worked!

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Thank you brother ❤

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Tive problemas de ERRO ( AVRdude – STK500 unknown protocol) ao carregar um Sketch qualquer após a instalação do IDE, tentei de tudo…(DRIVERS, re-instalação da IDE em várias tentativas ) mas a solução foi a seguinte: Fui no Gerenciador de Dispositivo do Windows na configuração de PORTAS (COM e LPT) selecionei com o botão direito do mouse sobre a Arduino Uno ( COM3) na opção Propriedades/Configuração de Portas/Avançada/no. da Porta COM e alterei de COM3 para COM10. Depois fui no IDE Software e alterei para COM10 ( Arduino UNO) e dei um Boot no PC. Pronto agora carrega certinho os Sketchs e roda os programas normalmente. O detalhe que me chamou a atenção para o conflito foi: no IDE Software não aparecia na frente da porta COM, o nome (Arduino UNO) só aparecia COM3….ai conclui que havia um conflito qualquer nesta porta. Este erro te deixa maluco porque parece um defeito de Hardware mas não é, trata se apenas de um de conflito entre algum dispositivo desconhecido e o Arduino Uno na porta que normalmente é escolhida como COM3 (Arduino Uno ) pela configuração do IDE.

Espero ter ajudado vocês ( Portuguese Language)

Simple Tip worked like a charm!!

it works! thank you

perfect :)

Thank you!

TY

thanks it fixed my problem.

Thank you very much, has worked 👍👍👍👍

Many Many THANKS!!!

thanks a lot mate

Thannkss

Thanks...simple solution but realy helping..thumbs up

thakssssssssssssss

thank u