Bootloader mega to uno

Development Tools Uploading
1

I have done burn Bootloader from a Mega to a Uno
without an error. Now I want to use IDE to upload
a sketch to the Uno but get error:
Sketch uses 2792 bytes (8%) of program storage space. Maximum is 32256 bytes.
Global variables use 448 bytes (21%) of dynamic memory, leaving 1600 bytes for local variables. Maximum is 2048 bytes.

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x95

etc.

When I connect the mega direct to the IDE/computer and connect the Uno to
the mega same way as I did to upload the ISP to the Uno
Mega uno
5v 5v
grnd grnd
53 reset
51 11
50 12
13 52

I have also changed the ISP sketch as above.

and select Uno,under Sketch, upload using programmer the sketch is
uploaded to the Uno. So I can upload a sketch via the Mega to the
Uno but not directly.

Any ideas what I did wrong here.

Thanks in advance

2

Did you try this after uploading the bootloader? If you did, the bootloader is overwritten. You must not upload a sketch via programmer after burning the bootloader.

3

Thanks for your reply.

After burning the bootloader I connected the Uno with IDE to
PC select board Uno, port etc. then try to upload sketch but
get the error as mentioned before:

avrdude: stk500_recv(): programmer is not responding
avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x95

What I'am doing wrong?

Thanks in advance.

4

What is the reason that you needed to burn the bootloader?

Reason for asking is that are two parts involved in uploading via USB. The 328P and the serial-to-usb converter. If the 328P is OK (sounds like it) the serial-to-usb converter might be faulty.

How is your Uno identified by the operating system? As "Arduino Uno" or as something else? If it's not identified as a CH340, you can run the loopback test (Loop-Back Test Instructions).
Which operating system?

5

The reason I replaced the processor is because I think the old one
is broken. I use Win 10 operating system and is identified as Arduino Uno
(COM5) in device manager.

I did the the loopback test but no output on COM5

Thanks in advance.

6

That would indicate that the 16U2 (serial-to-usb converter) is broken.

7

That is a hardware problem? If so I have to buy a new one I assume this can
not been solved?

Thanks

8

More than likely yes. You can try to burn the firmware using your programmer or Atmel Flip; there is a slight chance that you can revive it. You can find the firmware in C:\Users\yourUsername\AppData\Local\Arduino15\packages\arduino\hardware\avr\1.8.6\firmwares\atmegaxxu2

It's what I would do.

9

Thanks for your help