0

We are so tired and would like to get help with this. We are trying to bootload using the arduino Uno.

We have an atmega 328p smd , that we are trying to bootload. We have connected all the right pins, added to the boards.txt the "Atmega328 on a breadboard(8mhz internal clock)".

Then I have chosen from the "board" menu, this option (internal clock), and uploaded the program. it worked .

Later, I wanted to try and bootload for external clock so I chose from the boards menu the pro mini with 5v board.(is it wrong?)

Not only that I got an error, now, I can't bootload the internal clock again !!

Why can't we bootload again? Did we damage something? Can it be reset again? How can you bootload for external 16Mhz ??

error :

avrdude: Yikes!  Invalid device signature.
         Double check connections and try again
  • When burnt the Pro Mini bootloader did it work? – RSM Apr 27 '15 at 14:08
1

Not only that I got an error, now, I can't bootload the internal clock again !

You need an external clock source, such as a crystal and two capacitors. Once you switch the fuses to the external clock it won't work any more unless you have such a clock.

I have a bootloader uploader sketch that also provides a clock signal if you need it.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.