I am trying to load code to an Arduino Mega2560 from Amtel Studio 7 and avrdude.exe. I get the following:-
avrdude.exe: stk500_getsync(): not in sync: resp=0x00
avrdude.exe: stk500_disable(): protocol error, expect=0x14, resp=0x51
Consulting with my friend Google I find this is not uncommon and is due to problems with the serial link.
However none of the remidies suggested have helped and the link is working for the Arduino IDE.
I am not sure what baud rate I should use. i thought tha baud rate was irelavent with USB but I tried several anyway
(115200,57600 , .. . and 9600 which the Arduino serial library uses)
I also wondered whether the existing progam effected it so I loaded a sketch with Arduino IDE which didn't use the serial link.
Without the serial link in use I get 3 flashes on the RX LED at about 1 second intervals followed after by atother after 20 seconds.
I would appreciate any suggestions about what to try next as I am lost for Ideas.