How to get the ID of an Arduino?

Question

I use Arduino Pro Mini. As I know, every MCU has a number. Different MCU has different number. How to get it ?

Do you mean, every (single) chip has a unique number? Or does every type of chip have a signature? — Nick Gammon, Dec 16 '16 at 07:15

score 3 · Accepted Answer · edited Dec 15 '16 at 15:58

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Arduino Pro mini is based on Atmega328 which does not have a unique ID. It has only device signature which you can read if you turn on Show verbose output during upload in Arduino IDE's File > Preferences.

edited Dec 15 '16 at 15:58

Gerben

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answered Dec 15 '16 at 15:46

Chupo_cro

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But as I know , every Microchip have a unique number. – Enhao Lan Dec 16 '16 at 05:09
Really? Where is this documented? – Nick Gammon Dec 16 '16 at 07:14

score 1 · Answer 2 · answered Dec 17 '16 at 00:20

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Could you be confusing the term micro-chip (often applied to any tiny, programmable electronic device) with the manufacturer named "Microchip" (who make the PIC series of micro-controllers, among many other products)? Microchip (the company) does make a line of products that have individually unique IDs. Most manufacturers do not provide unique IDs in their micro-controller devices, and AVR's Atmega 328 series devices do not have unique ID's.

answered Dec 17 '16 at 00:20

JRobert

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Thanks, I understand you. Because I seemly remeber STM32 and 51 has unique ID, so I think 328 has too. – Enhao Lan Dec 17 '16 at 05:30

How to get the ID of an Arduino?

2 Answers2