Previously Arduino Cloud allowed the creation of devices based on Arduino or ESP32/ESP8266 hardware, with automatic sketch creation in C/C++ using the Arduino IoT Cloud library.

Arduino Cloud IoT room monitor “To create this smart device, Robert used an Arduino Oplà IoT Kit, as it contains a MKR WiFi 1010, a MKR IoT Carrier with a built-in screen and capacitive buttons ...

With just a Wemos D1 Mini, a standard PIR sensor, and some open source code, you can create a practical self-contained motion sensor module that can be placed anywhere you want to keep an eye on.