Hi everyone,


It seems nothing will do... Still got the same errors. The chip may be dead!

Well, too bad, but I'll use it for a reflow oven controller, so it won't need the usb communication!
At least, I'm reusing it!

Thanks again to everyone for the help!


Cheers,

Gromain

Thanks for all the answers!

As for the USBtiny, I know it works well, I've used it to program the 328 with blink (to test the board, and it works well), and to put the bootloader back.

And the chip does power up when I connect the USBTiny. Should I try to connect the usb at the same time (to provide another power source for the chip while programming it)?

Hi!

Thanks for the help!

I tried your hint, but it seems there's some trouble with the chip itself...
Here is the error message I have when trying your command:

Code:

avrdude: initialization failed, rc=-1
avrdude: AVR device initialized and ready to accept instructions
avrdude: Device signature = 0x000000
avrdude: Yikes!  Invalid device signature.
avrdude: Expected signature for AT90USB82 is 1E 93 82
avrdude: NOTE: FLASH memory has been specified, an erase cycle will be performed
         To disable this feature, specify the -D option.

avrdude done.  Thank you.

Device signature = 0x000000 ? That doesn't seem right, right?
Should I try with -D ?

Yep! I just found out about it yesterday, and tried it right away! Nice improvement, but still no luck!

I was wondering that maybe I could use a usbtiny to reprogram the atmega 8u2... Would that be possible?

Thanks for the quick answers!

I tried the hdwwiz method, but when I changed the driver, it still didn't want to take the driver (I got something about the driver not being compatible with my device). I'm running Win7 in 64 bits, does this could be the reason? (i.e. no atmel dfu driver for win7 64bits?)

For your informations, the informations about the driver in the device manager are as follow:

Code:

Driver Provider: http://www.arduino.cc
Driver Date: 15/11/2007
Driver Version: 5.1.2600.0
Digital Signer: Not digitally signed

And the setting for the port are those:

Code:

Bits per second: 115200
Data bits: 8
Parity: None
Stop bits: 1
Flow control: None

No luck apparently!

Hi everyone!

I do have the same problem! It seems I can't upload anything on my arduino UNO R2. I'm still able to upload sketches using an USBtiny, but no communication between the computer and the board when using the usb connection.
I got an "avrdude: stk500_getsync(): not in sync: resp=0x00" error when trying.
Although I followed the advices given here, I'm still stuck.

My board doesn't pass the loopback test.

The other problem is, I can't seem to be able to get the atmega 8u2 in DFU mode. It does nothing when I try to connect reset and GND from the pin on its side.
Well, to be honest, I think it did something the first time. I had a new device in the device manager (I'm using Win 7 64 bits here).
But the only driver accepted was the arduino one for the Uno board. It didn't accept the flip driver...

Any hints on what should I do now?

Thanks!

Salut!!

Essaie d'insérer ce morceau là de code:

Code:

int valeur = analogRead(gyroIN);
 
Serial.println(valeur);
 
delay(10);

dans une boucle For pour le répéter 100 fois par exemple.
Il devrait alors te sortir une centaine de valeurs différentes.
Je ne connais pas ce type de produit, mais il semblerait qu'il sorte une nouvelle valeur toute les 1,5 ms, essaie donc de régler ton delay à 1,5! (C'est ce que j'ai compris après avoir fait un tour sur le lien que tu donne! Je ne suis pas un expert loin de là!)