Add I²C Example

Author: AzonInc

README.md

@@ -37,7 +37,7 @@ I offer you a fully assembled and tested Doorman-S3 which comes with the Stock F
 - USB-C port for easy flashing (and because USB-C is cool 😎)
 - It's super small (37mm x 37mm) and fits almost everywhere
 - Configurable WS2812B RGB LED to indicate specific events
-- 2 additional GPIO via Screw Terminal for easy expansion with your own sensors and devices
+- 2 additional GPIO via Screw Terminal for easy expansion with your own sensors and devices (i.e. I²C)
 - 1 Relay via Screw Terminal to switch up to 40V (max. 2.5A) for oldschool intercom systems
 - 1 External Button via Screw Terminal (G + BTN)
 - Bridge Rectifier for the Bus-wire input to correct polarity

docs/guide/firmware/additions.md

@@ -41,6 +41,21 @@ binary_sensor: // [!code ++] // [!code focus]
 ```
 :::
 
+::: details Use I²C Sensors
+If you want to add Sensors via the I²C bus you can use the two free GPIO Pins and add the I²C component to your configuration.\
+Now you can attach your Sensors to the two free I²C GPIO Pins.
+```yaml
+<!--@include: minimal.example.yaml-->
+
+i2c: // [!code ++] // [!code focus]
+  sda: GPIO40 // [!code ++] // [!code focus]
+  scl: GPIO48 // [!code ++] // [!code focus]
+  scan: true // [!code ++] // [!code focus]
+  id: i2c_bus // [!code ++] // [!code focus]
+```
+:::
+
+
 ## Advanced Examples
 ### Home Assistant
 ::: details Sending Bus commands

docs/guide/what-is-doorman.md

@@ -25,7 +25,7 @@ You just received your Doorman? Skip to the [Quickstart](getting-started).
 - USB-C port for easy flashing (and because USB-C is cool 😎)
 - It's super small and fits almost everywhere
 - Configurable WS2812B RGB LED to indicate specific events
-- 2 additional GPIO for easy expansion with your own sensors and devices
+- 2 additional GPIO for easy expansion with your own sensors and devices (i.e. I²C)
 - 1 solid state relay to switch up to 40V (max. 2.5A) for oldschool intercom systems
 - 1 External Button (G + BTN)
 - Bridge Rectifier for the Bus-wire input to correct polarity