# \#i2c

**URL:** https://forum.amebaiot.com/tag/i2c/49.md

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## [I2C scanner returns all addresses, despite pullup resistors](https://forum.amebaiot.com/t/i2c-scanner-returns-all-addresses-despite-pullup-resistors/3867)

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**Author:** [@Barryn56](https://forum.amebaiot.com/u/Barryn56)\
**Replies:** 12\
**Last updated:** [March 7, 2025, 2:48am UTC](https://forum.amebaiot.com/t/i2c-scanner-returns-all-addresses-despite-pullup-resistors/3867 "2025-03-07T02:48:34Z")

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Hello, newbie here. Just trying to get a battery-backed RTC connected to an AMB82-mini, so started with the I2CScanner. As it returns all addresses with nothing attached, I put in 2 pull up resistors (1.2k) on SDA and SC…