Homemade Arduino board not in sync with Arduino IDE


I flashed a blank Atmega328 chip with an AVR dragon lended.

That chip was running nicely on the breadboad it had been flashed on.

I could program it with arduino IDE, through a uno board without it's chip.

Then I built a small board for that chip.


The program (blinking LED) is working properly, but I can't reprogram it with arduino IDE anymore.

I got the message :

"avrdude: stk500_getsync(): not in sync: resp=0x00"


I can't see what's wrong, as I was able to reprogram it before, on the breadboard...

It seems to me, that the RX,

It seems to me, that the RX, TX connection between ATmega and FTDI must be swapped. Verify your schmatic with Guibots Paperduino: 



Hi, thank you for your

Hi, thank you for your reply.

I simplyt forgot to cut a coper strip. It works now.

Nice links you gave.