About NANO burn bootloader

Using Arduino General Electronics
1

Hi,
I followed:

to burn my NANO, but waiting too long more than 3 minutes time and I just stop it on half way.
It can't burn again now.

My question is how long generally need for it?
Thanks
Adam

2

Let's start with the obvious question. Why do you need to burn the bootloader ?

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3

A few seconds.

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4

Thanks.
It can't upload a sketch. and I've tried all solutions I found.

5

I assume that you have the correct board and COM port selected, but what have you got the Processor set to in the IDE ?

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6

I tried all three options. The stoped one selected: ATmega328.
BTW: how to know if a NANO has or hasn't a 'Bootloader', my NANO's red led does't flash when pressed the reset button

7

An attempt to upload a sketch, via the bootloader, does not work ?

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8

Thanks.

  1. uploading failed;
  2. try to burn bootloader, and it takes too long time, unplugged, now can't burn bootloader, can't upload.
9

Exactly how did you connect the Uno to the Nano when you tried to burn the bootloader ?

When you tried to burn the bootloader to the Nano which board type and processor did you have selected on the Uno ?

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10

Thanks.

  1. upload the ArduinoISP into an UNO;
  2. wiring as picture;
  3. burn as picture. click 'Burn Bootloader'
  4. ERROR.
  5. chip on NANO

ckt.PNG
ckt.PNG1735×1036 116 KB

burn.1
burn.2.PNG
burn.2.PNG767×413 37.1 KB

burn.3

11

The chip on the Nano looks like it is a Mega168 rather than a Mega328 which I would expect.. Where did you get the Nano board from ?

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12

You show "Vin" connected to both the UNO and the Nano.

You need to power them at 5 V; do not use "Vin". (Preferably not ever!)

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13

used 5v to 5v, same.

14

aliexpress

15

Can you please provide a link to the listing on the site

It may be worth trying the Minicore board core https://mcudude.github.io/MiniCore/package_MCUdude_MiniCore_index.json as it has an option for ATmega168

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16

Thanks.
The link of the NANO I ordered.
I'll your link.

17

Have you tried connecting a 10uF capacitor between RESET and GND of the UNO? That is sometimes needed to prevent the UNO from resetting while burning the bootloader.

18

I see no link

19

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