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  Pi5v2 server CM5 free GPIO extender pin define
Posted by: admin - 02-23-2026, 05:45 AM - Forum: Pi5 - No Replies

   

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  how to check whether home assistant enabled i2c bus
Posted by: admin - 02-23-2026, 05:37 AM - Forum: Pi5 - No Replies

home assistant OS command line, input command:
ls /dev/i2c-*
then will show i2c dev as this photo.
   

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  how to check whether home assistant enabled i2c bus
Posted by: admin - 02-23-2026, 05:37 AM - Forum: Pi5R16 - No Replies

home assistant OS command line, input command:
ls /dev/i2c-*
then will show i2c dev as this photo.
   

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  how to check whether home assistant enabled i2c bus
Posted by: admin - 02-23-2026, 05:37 AM - Forum: Pi5R8 - No Replies

home assistant OS command line, input command:
ls /dev/i2c-*
then will show i2c dev as this photo.
   

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  how to check whether home assistant enabled i2c bus
Posted by: admin - 02-23-2026, 05:37 AM - Forum: Pi5M8 - No Replies

home assistant OS command line, input command:
ls /dev/i2c-*
then will show i2c dev as this photo.
   

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  how to check whether home assistant enabled i2c bus
Posted by: admin - 02-23-2026, 05:37 AM - Forum: Pi5M16 - No Replies

home assistant OS command line, input command:
ls /dev/i2c-*
then will show i2c dev as this photo.
   

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  how to check whether home assistant enabled i2c bus
Posted by: admin - 02-23-2026, 05:37 AM - Forum: Pi5R32 - No Replies

check in home assistant menu : Setting -- System -- Hardware -- System hardware page, search "i2c"
   

or

home assistant OS command line, input command:
ls /dev/i2c-*
then will show i2c dev as this photo.
   

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  how to check whether home assistant enabled i2c bus
Posted by: admin - 02-23-2026, 05:37 AM - Forum: Pi5M32 - No Replies

home assistant OS command line, input command:
ls /dev/i2c-*
then will show i2c dev as this photo.
   

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  how to enable i2c bus for CM5 in config.txt file
Posted by: admin - 02-23-2026, 05:34 AM - Forum: Pi5 - No Replies

In the root of the hassos-boot partition, add a new folder called CONFIG.
In the CONFIG folder, add another new folder called modules.
Inside the modules folder add a text file called rpi-i2c.conf with the following content:
i2c-dev

In the root of the hassos-boot partition, edit the file called config.txt at last add two lines to it:
dtparam=i2c_arm=on
dtoverlay=i2c1-pi5,pins_2_3
   

restart home assistant.

how to check whether have enabled i2c bus for home assistant, see here: https://www.kincony.com/forum/showthread.php?tid=9075

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  how to enable i2c bus for CM5 in config.txt file
Posted by: admin - 02-23-2026, 05:34 AM - Forum: Pi5R16 - No Replies

In the root of the hassos-boot partition, add a new folder called CONFIG.
In the CONFIG folder, add another new folder called modules.
Inside the modules folder add a text file called rpi-i2c.conf with the following content:
i2c-dev

In the root of the hassos-boot partition, edit the file called config.txt at last add two lines to it:
dtparam=i2c_arm=on
dtoverlay=i2c1-pi5,pins_2_3
   

restart home assistant.

how to check whether have enabled i2c bus for home assistant, see here: https://www.kincony.com/forum/showthread.php?tid=9075

Print this item