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When I try to use "sudo i2cdetect -y 1" it comes back with unknown command. I turned on i2c do I need to download any new software?

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    You don't need the sudo if you are using Raspbian and the user is a member of the i2c group. Your particular problem is as identified by goldilocks though.
    – joan
    Mar 13, 2018 at 15:56
  • Although user pi is part of the group i2c in my case, I still have to run i2cdetect with sudo in front of it. Running RPi 3B+ using stretch.
    – GeertVc
    Jul 13, 2019 at 8:34

1 Answer 1

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On Raspbian (and other Debian derivatives) i2cdetect is in package i2c-tools.

sudo apt install i2c-tools

The package has the same name in Fedora, so I would guess other distros as well.

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