# Creating an I2C address for a RPi slave

**URL:** <https://discourse.processing.org/t/creating-an-i2c-address-for-a-rpi-slave/30732>\
**Category:** Electronics (Arduino, etc.)\
**Created:** [June 15, 2021, 7:51pm UTC](https://discourse.processing.org/t/creating-an-i2c-address-for-a-rpi-slave/30732 "2021-06-15T19:51:33Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![TheDek](https://avatars.discourse-cdn.com/v4/letter/t/94ad74/32.png) [@TheDek](https://discourse.processing.org/u/TheDek)\
**Post date:** [June 15, 2021, 7:51pm UTC](https://discourse.processing.org/t/creating-an-i2c-address-for-a-rpi-slave/30732/1 "2021-06-15T19:51:33Z")

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I am trying to connect two Raspberry Pi’s using an I2C connection. I planned to use one as the slave sending data, and the other as the master. When I do i2cdetect -y 1 on my system the two pi’s can see each other, but no i2c address comes up. Is there a way to set an address to allow them to communicate?

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**Author:** ![RichardDL](https://avatars.discourse-cdn.com/v4/letter/r/f475e1/32.png) [@RichardDL](https://discourse.processing.org/u/RichardDL)\
**Post date:** [June 19, 2021, 9:00pm UTC](https://discourse.processing.org/t/creating-an-i2c-address-for-a-rpi-slave/30732/2 "2021-06-19T21:00:18Z")

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Hi @TheDek, I’m sorry no-one has replied. Using a Pi as I2C slave is a less likely option, and clearly no-one here has tried it. I had a quick Google of “RPi I2C Slave” and there’s lots of results.

best regards,

Richard.