Step by step
Arduino IDE 1.0.1
Get the last avrdude version 5.11.
Drivers Arduino Installed Ok.
Connect Mega 2560 R3 to Windows Xp with USB.
Serial Port COM3 Detected.
Open Arduino IDE.
Select in Tools Arduino Mega 2560.
Select Serial Port COM3.
Copy Telnet Client Sketch to Arduino IDE (
http://arduino.cc/en/Tutorial/TelnetClient?action=sourceblock&num=1).
Test upload sketch and upload OK.
Close Arduino IDE.
Disconnect Arduino Mega 2560 USB.
plug in Ethernet Shield to Arduino Mega 2560.
Connect Mega 2560 R3 to Windows Xp with USB.
Open Arduino IDE.
Select in Tools Arduino Mega 2560.
and when go to Serial Port menu only COM1 is available.
If i try to disconnect and connet USB cable then windows tell me that "One of the USB devices attached to this computer has malfunctioned, and Windows does not reconnize it."
then unplugged the ethernet shield and connect de Mega 2560 USB again.
When I try to upload any sketch, I get the following error messages:
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_getsync(): timeout communicating with programmer
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
avrdude: stk500v2_ReceiveMessage(): timeout
like this post(
http://arduino.cc/forum/index.php?topic=83079.0)
1) The Green "on" light is on when the board is powered up.
2) The "L" light flashes when I power up the board (indicating that the bootloader is present).
3) I have the arduino IDE pointing to the correct COM port and setup for the Mega board
4) I have tried two different PCs, and 3 versions of Arduino IDE 1.0.0 1.0.1 and 0019
5) Nothing is attached to the Mega
6) When I send to upload a sketch RX LED tilt 1 per 15 seconds and TX not tilt.