Enabling i2c - confused about when to use sda1 vs sbd1 vs mmcblk0p1

[eoren1]

Moved my rPi4b to the Argon 40 and am trying to get i2c enabled so as to control the fan and power button. I can access CLI via a keyboard and HDMI to my TV.

I followed the steps below by entering ‘login’ at the ha prompt which gave me a #
I did not see anyway of going into root (typing in ‘root’ at the ha prompt errored and asked if I meant to type ‘host’ for some reason)

Anyway, I input each line as below and after reboot, typed in login to get # and then lsmod | grep i2c which resulted in i2c_dev 20480 0

But I still get errors about i2c not being enabled when trying to start the Argon40 Add on.

Not sure if I should redo the below with sbd1 or mmcblk0p1 as HA instructions are vague only saying " Type the following to enable I2C, you may need to replace sda1 with sdb1 or mmcblk0p1 depending on your platform" - what platform goes with what???

mkdir /tmp/mnt
mount /dev/sda1 /tmp/mnt
mkdir -p /tmp/mnt/CONFIG/modules
echo -ne i2c-dev>/tmp/mnt/CONFIG/modules/rpi-i2c.conf
echo dtparam=i2c_vc=on >> /tmp/mnt/CONFIG/config.txt
echo dtparam=i2c_arm=on >> /tmp/mnt/CONFIG/config.txt
sync
reboot

[zoogara (Daryl)]

I just used this:

[add-on] HassOS I2C Configurator

HassOS I2C Configurator [image] This project enables the Raspberry Pi I2C bus from an addon. You can connect an SDCard and up to two hard disks or USB drives, which are detected as sda or sdb, and they will all have I2C enabled when you click start. About This project is a part of my HassOS Configurator project. The goal of this add-on, similar to root apps on Android, is to make a mole-hill out of a mountain. Installation Within Home Assistant, click Supervisor-> Add-on Store → … button (…

Which works with this:

Argon One v1v2 Active Cooling and Active Linear Cooling Addon

Currently only v1 and v2 are supported. V3 is not supported. [Open your Home Assistant instance and show the dashboard of a Supervisor add-on.] [image] This is an addon for Argon One in Home Assistant. It’s essentially a script that runs in a docker container. It enables and automates the Argon One Active Cooling System with your specifications. Know your options There are two addons to choose from Active Cooling, and Linear Active Cooling. I advise not using both at the same time as th…

And for Argon 40 there is this:

GitHub - Misiu/argon40: Home Assistant support for Argon ONE Pi 3 & 4...

But I think the Argon One version works with the hat.

[eoren1]

Thanks

I tried that ‘easy way’ first and it didn’t work which led me to go the official route but that also doesn’t seem to be working - or maybe my result of i2c_dev 20480 0 shows it is and I screwed up the non-configurable plugin?

[eoren1]

Figured it out after searching here - looks like the ‘easy way’ has to have protection disabled to work. Did that and now have i2c. Thanks!