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

Projects Interfacing w/ Software on the Computer
1

Hello everyone. Yesterday I was playing with my Arduino Uno, with example codes for LEDs, and everything was ok. But suddenly, while uploading Blink code, IDE told me that "avrdude: stk500_getsync(): not in sync: resp=0x00" And... the previous Fade code works even now, but I'm not able to upload anything new into Atmegas guts. I've already tried to shutdown everything, reconnect the wires etc. There's no wire in pin0, arduino was tested on second computer, and nothing. I've even tried to flash a bootloader with ParallelProgrammer, but again, IDE has some problem "avrdude initialization failed rc=-1" and signature 0x000000. I've checked twice every wire, connection and resistor, everything seems ok, but I'm still unable to upload any code, or bootloader. But what I noticed is that the TX diode doesn't blink. Only RX. Somebody in internet said, that I should connect two wires before resistor pack labeled "102", so I did. And then, the TX diode blink when I'm trying to upload something, and what's more - I can get an echo.. but the code still isn't being uploaded, because of error "avrdude: stk500_getsync(): not in sync: resp=0x30" so something has changed, but I don't know what else can I do. Sorry for my poor english and I wish that someone will be able to help me :slight_smile:

Regards.

EDIT
In addition, if it means anything, LED labeled L (next to TX LED) lights as long as nothing is connected to pin 13.

2

Two steps should be taken.

  • check if the right board is selected in the IDE
  • reconnect the Arduino
  • is the bootloader still present? or did you overwrite? (no I do not know how to check this easily)
3
  • yes, I've selected a proper board
  • tried so many times..
  • Probably yes. I haven't doing anything with it(before it stopped working). After the malfunction, I tried to flash it via ParallelProgrammer, but IDE informs me that there is wrong device singature 0x000000 and rc=-1. Somebody wrote somewhere, wrote that if I want to check if the bootloader still works, I have to connect Arduino to power supply and check if some LED blinks, and if I did it properly, it appears as working fine.

Regards.

4

Ok, now I flashed new bootloader into Atmega chip using second arduino board, but is still won't work.. So bootloader is fine. Any ideas what can I do?