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    I would imagine that README file was written when...

    I would imagine that README file was written when the author was using a AVR processor (like an Arduino Uno) where internal pull-ups do work. I wish there was a solder jumper on the ARM machines...
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    As I understand it, ARM processors internal...

    As I understand it, ARM processors internal pull-ups are just not strong enough, so you need a set of pull-ups on the SCL/SDA lines. I.e., it is not a 'bug', but a 'feature'. I was looking through...
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    From your picture, it looks like the pull-up...

    From your picture, it looks like the pull-up resistors are on the wrong pins (it looks like you have attached the resistors to pins 24, 25, an 26). They should be on the same pins as SDA/SCL. Even...
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