next topic »

[on:]

Hi I stated recently with arduino.
I have a UNO rev3.
Today I discharged a 100uF capacitor between ground and A1.

Is all lost or can I only replace the ATMEGA328P-PU micro controller.
And can it be replaced by any ATMEGA328P-PU or do I need one that is prepared beforehand?

[Reply #1 on:]

Hi I stated recently with arduino.
I have a UNO rev3.
Today I discharged a 100uF capacitor between ground and A1.

Is all lost or can I only replace the ATMEGA328P-PU micro controller.
And can it be replaced by any ATMEGA328P-PU or do I need one that is prepared beforehand?

Most likely a replacement 328P will fix the problem, but there is no guarantee of that. Unless you own a AVR hardware programmer or another arduino board to facilitate burning a bootloader into a blank chip, you are better off buying one pre-installed with the Uno bootloader. Several vendors offer such.

Lefty

[Reply #2 on:]

Ok thank you.

When you are talking about "another arduino board", is this now a separate board other than the one I discharged the capacitor on?
Can this other arduino also be a UNO rev3?
And when I have this other arduino board is the burning of the bootloader done by the areduino software?

Dawid

[Reply #3 on:]

And when I have this other arduino board is the burning of the bootloader done by the areduino software?

Here are the instructions for using the Arduino as a programmer.  (I have not tried it.)

[Reply #4 on:]

When you are talking about "another arduino board", is this now a separate board other than the one I discharged the capacitor on?

Yes, if you don't get a chip with a bootloader already on it.

Can this other arduino also be a UNO rev3?

Yes it can.

And when I have this other arduino board is the burning of the bootloader done by the areduino software?

There are a number of ways of doing it. I describe one here:

http://www.gammon.com.au/forum/?id=11635

You just need a second board, 6 hook-up wires, and you load the "programming" sketch onto the second (good) board.

[Reply #5 on:]

You could always pick up one of these and use it to reprogram your replacement chip.  Now you've got two boards!
http://www.aliexpress.com/item/MEGA-2560-R3-ATmega2560-AVR-USB-board-USB-cable-ATMEGA2560-ATMEGA8U2-Arduino-compatible-funduino-2560/724400409.html