When I first started working with microcontroller
This project will show you how to remove and replace the Arduino “brain” (ATmega328P uC). And we will re-flash your shiny new replacement chip with the glorious Arduino firmware. One thing to note, however: this project will only fix your Arduino if your Atmega328P controller is blown. If any other component is bad on your Arduino then this guide will more than likely not be helpful. With that said, let’s fix an Arduino!
Clint,
Perhaps you have already found out the solution.
In the Tools>Programmer menu choose Arduino as ISP.
Cheers,
You need an avr programmer. Because the Arduino bootloader is assumed “gone”.
Or you can buy an Atmega328P on eBay for less than $4 which has the boot loader pre-installed. Much cheaper than buying an avr programmer (that is, if this is the only thing you’re going to use it for.)
When i plug my arduino UNO in, L13 led and power led just blinks once and then turns off.
and it’s not detected by PC. It was working fine before.
when i attach external power supply, the last upload code i.e. blink example works.
But i cant seem to power it up with usb now.
Is there a way to completely erase the bootloader from an ATMEGA328 chip without reinstalling the bootloader? In other words, I want a bare metal chip with no bootloader. How can I do this?
Get an AVRISP MKII programmer and AVR Studio and you can do it. That is how I would.
Riley
Of course this won’t work if the processor is a soldered-on SMD. :-(
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