# Elixir Nerves -- wrong I2C?

**URL:** <https://forum.elixirforum.com/t/elixir-nerves-wrong-i2c/51105>\
**Category:** Questions\
**Tags:** nerves, raspberrypi, i2c, circuits\_i2c\
**Created:** [October 17, 2022, 5:10pm UTC](https://forum.elixirforum.com/t/elixir-nerves-wrong-i2c/51105 "2022-10-17T17:10:25Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![Daz](https://forum.elixirforum.com/user_avatar/forum.elixirforum.com/daz/32/28141_2.png) [@Daz](https://forum.elixirforum.com/u/Daz)\
**Post date:** [October 17, 2022, 5:10pm UTC](https://forum.elixirforum.com/t/elixir-nerves-wrong-i2c/51105/1 "2022-10-17T17:10:25Z")

</div>

Hi! I am very new to all of this but I’m hoping you can help me.

I have an original Raspberry Pi with some sensors attached (GPIO, I2C, SPI). In Raspbian, everything seems to work as intended. I run `i2cdetect -y 0` and I see devices at 0x39 and 0x48. I see `/dev/i2c-0`.

However, I am having trouble exploring with Elixir Circuits Quickstart. If I run `Circuits.I2C.bus_names()` I get back `["i2c-11"]`, and `Circuits.I2C.detect_devices()` just loops `i2c-bcm2835 20205000.i2c: i2c transfer timed out`.

Any advice?