adjusted iot entry to be smart devices entry

wiki/android/gadgetbridge.md

@@ -2,7 +2,9 @@
 
 [Gadgetbridge](https://codeberg.org/Freeyourgadget/Gadgetbridge/) is a free and open source software
 for [Android](/wiki/android.md) systems.
-It is a cloudless replacement for gadgets proprietary applications.
+It is a cloudless replacement for proprietary software for
+[smart devices](/wiki/smart_devices.md), but is especially designed for
+[smartwatches and smart bands](/wiki/smart_devices.md#smartwatches-and-smart-bands).
 
 ## Setup
 

wiki/home_assistant.md

@@ -1,7 +1,7 @@
 # Home Assistant
 
-[Home Assistant](https://www.home-assistant.io/) is a central control system for smart home and
+[Home Assistant](https://www.home-assistant.io/) is a central control system for
-other [Internet of Things](/wiki/internet_of_things.md) devices.
+[smart home](/wiki/smart_devices.md#smart-home) and other Internet of Things devices.
 
 ## Setup
 

wiki/internet_of_things.md

@@ -1,10 +0,0 @@
-# Internet of Things
-
-Internet of Things (IoT) describes communication between devices with sensors - so called smart
-devices - over the internet or a network.
-
-## Control Systems
-
-Many smart devices can be controlled via [Bluetooth](/wiki/bluetooth.md), Zigbee or Z-Wave.
-[Home Assistant](/wiki/home_assistant.md) is a free and open-source software that is designed to be
-a central control system for smart home devices.

wiki/smart_devices.md

@@ -0,0 +1,22 @@
+# Smart Devices
+
+Smart devices are electronic devices that are interconnected, connected to a local network or
+connected to the internet.
+Smart devices include smart home devices aswell as smartphones, smartwatches and more.
+They can often be considered to be part of the Internet of Things (IoT).
+Smartphones can use an operating system like [Android](/wiki/android.md).
+Other devices often use customized versions of [Linux](/wiki/linux.md).
+
+## Smart Home
+
+Many smart home devices can be controlled via [Bluetooth](/wiki/bluetooth.md), Zigbee or Z-Wave.
+[Home Assistant](/wiki/home_assistant.md) is a free and open-source software that is designed to be
+a central control system for smart home devices.
+
+## Smartwatches and Smart Bands
+
+Smartwatches and bands are wearable computers in form of a watch or armband.
+They can include biomonitoring and other applications.
+Smartwatches and bands are often connected to a smartphone.
+On [Android phones](/wiki/android.md) [Gadgetbridge](/wiki/android/gadgetbridge.md) can be used as
+an alternative to proprietary applications by the smart devices' vendor.