diff --git a/Projects-using-ArduinoJson.md b/Projects-using-ArduinoJson.md
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--- a/Projects-using-ArduinoJson.md
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@@ -223,3 +223,19 @@ By [educ8s.tv](http://www.educ8s.tv)
 
  📥 http://educ8s.tv/art-deco-weather-forecast-display
 
+## HA4IoT
+
+HA4IoT is a home automation system for Windows 10 IoT Core. Some actuators and sensors are based on Arduino devices and thus they use this JSON library.
+
+The system has support for several hardware devices and supports Alexa, Sonoff, Telegram, OpenWeatherMap, WebApp for iOS, Android etc.
+
+Link: https://github.com/chkr1011/HA4IoT
+
+### Features
+![Features](https://github.com/chkr1011/HA4IoT/raw/master/Media/Images/Overview2.png?raw=true)
+
+### WebApp
+![App screens](https://github.com/chkr1011/CK.HomeAutomation/raw/master/Media/Screens/App_1.png?raw=true)
+
+
+