Let's learn how to install official ESP32 add-on for Arduino IDE.
IoT (Internet Of Things) Motion Sensor – A motion sensor which will give us push notification in our phone whenever a motion is detected made using NodeMCU ESP8266 and PIR.
Arduino Mega With Inbuilt WIFI. Atmega 2560 + ESP8266.
6 Top ESP8266 Development Board for internet of things (IoT) projects.