Comments (2)
You probably have a counterfeit atmega328p, here is an excellent video about the subject: https://www.youtube.com/watch?v=eeDC1m7ANJI
Not Unique Disclaimer
The Atmega328p, Atmega2560, Attiny85 does not have a 'Serial Number' on the datasheet, this mean it's possible to have two microcontroller with the same UniqueId.
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Having clones is a high probability, as i mainly use ebay for cheap boards for hobby projects.
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Related Issues (18)
- not working on the nano 33 IoT HOT 1
- Add processor type information to ID HOT 1
- Agregar LGT8F328P-LQFP32 MiniEVB HOT 3
- Incorrect endianness during copy since the chip is little endian
- ArduinoUniqueID example tries to send data before serial comms established HOT 1
- No guarantee for uniqueness on Arduino Nano HOT 6
- Seem a little mistake with ESP32 C3 HOT 2
- Change for Core RP2040 Arduino
- UNO R4 not supported HOT 2
- Read and compare ID HOT 1
- FYI: About serial number of Mega and Tiny devices HOT 1
- Unable to be used in Platform IO HOT 2
- How to address Arduino board through the unique ID HOT 7
- Not unique on Mega2560 HOT 5
- SAMD51 not supported (and will crash the CPU if used) HOT 3
- Writable Unique ID HOT 3
- you can keep memory HOT 1
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