I recently (two days ago) purchased my first Arduino Uno board, my objective being to recreate this (http://mrbook.org/blog/category/arduino/) mod. I installed the drivers to my laptop, which runs Ubuntu 10.04, and succesfully uploaded the code related to the project to the Arduino board. Imagine my joy when the Arduino was able to make a LED blink upon MIDI-in! Later while working on the rest of the circuitry I might have made a mistake and the Arduino stopped making the LED blink. Imagine my dissapointment! I tried re-uploading the code, but this time it returned an error:
avrdude: verifying ... avrdude: verification error, first mismatch at byte 0x0000 0x0c != 0x00 avrdude: verification error; content mismatch
After searching for solutions online, I decided to try to rewrite the bootloader, which in turn returned another, similar, error:
***failed; avrdude: verification error, first mismatch at byte 0x0000 0x3f != 0x00 avrdude: verification error; content mismatch
I realize that posting to the forum is one of the last avenues of help I should go down, but all the relevant posts I found had either no response, or advise to rewrite the bootloader with another board. This is something that I cannot do due to my only having one board. Common questions asked in other relevant topics are:
Are there cables attached to port 0..n? No, I have removed all cables. Have you selected the correct board? Yes, I have selected the Arduino Uno, which is what I have. Is the chip the right way in? Yes, I assume so since it was working earlier, and I bought this board pre-made, so why shouldn't it be?
I can post the verbose output if necessary.
Any advice or ideas would be greatly appreciated. Thanks in advance.
Edit: I forgot to mention that the RX/TX LEDs do light up when attempting to upload the code.
Edit 2: Another thing I should mention, is that I did try to reset my Arduino board and immediately attempt to upload the code, but to no avail.