Hi,
I am using an Arduino UNO Rev3 since a few weeks without problems on my Windows 7 SP1 computer.
I have recently purchased a few naked ATMEGA328p-pu that i wanted to use in projects.
I have used Arduino-ISP sketch to burn bootloader into each ones and have tried to put them into the Arduino board's IC Connector and everything was working perfectly. I have tried uploading some led blinking sketch and it worked.
BUT
I did some bad connection in my last test (some sort of short circuit...). I didn't found what i did but after my arduino was powered since a few seconds, i start smelling some "electronic component heating"... I briefly stoped power supply and unplugged everything.
I thought Arduino was still working because the ATMEGA328P-PU was still working.
I then realized that i can no more upload new sketches...
I have of course checked if my board was correct, if the com port was selected, if the good programmer was selected...
When i try to upload (with verbose mode) i am getting :
avrdude: Version 5.11, compiled on Sep 2 2011 at 19:38:36
Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
Copyright (c) 2007-2009 Joerg Wunsch
System wide configuration file is "E:\dev\arduino\arduino-1.0.2\hardware/tools/avr/etc/avrdude.conf"
Using Port : \\.\COM3
Using Programmer : arduino
Overriding Baud Rate : 115200
avrdude: Send: 0 [30] [20]
avrdude: Send: 0 [30] [20]
avrdude: Send: 0 [30] [20]
avrdude: Recv:
avrdude: stk500_getsync(): not in sync: resp=0x00
avrdude done. Thank you.
The fact are :
- my ATMEGA328P-PU seems to works : the "L" led blink when powering up and then get fixed.
- when trying to upload, i see no led activity at all (no RX or TX blinking)...
- The Arduino is still detected on my computer as "Aduino UNO R3 (COM3)" (i have tried to remove the device and drivers and reinstall but it is still the same).
I was thinking about some problem on the ATMEGA16U2
I tried to apply some tutorials about reflashing the atmega16U2 using DFU Mode but i cannot manage to go into DFU Mode :
- I have tried to put a jumper on the icsp connector on the 2 pin nearest to the USB Connector but nothing happend in the device manager (the "Arduino UNO R3 (COM3)") is still here...
- I know i have read that you have to put some resistor on the backside of the Arduino board but i cannot manage to see if it is still necessary on REV3 version.
- I have found on the front side of my Board the "RESET-EN" pin hole which seems to be at the same place as the resistor which should be in place in some tutorials. I tried to put a resistor on this 2 pin holes while using a jumper on the reset/gnd part of the icsp header near the usb port, but still nothing...
I don't know if i am doing something wrong.
I don't know if it could some other componnent related to this ATMEGA (capacitor ?) that i could change maybe ?
I would really appreciate if anyone of you had any clues to help me fix my Arduino...
Sincerly,
elfrancesco