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Arduino · Module 8 of 10

Connectivity and IoT

Connect Arduino projects to the internet.

📖 Key ideas

  1. Wi-Fi boards: ESP32/ESP8266 (programmable with Arduino IDE), Arduino Uno R4 WiFi, Nano 33 IoT.
  2. Send data to cloud dashboards (Arduino Cloud, ThingSpeak, Blynk).
  3. MQTT for lightweight messaging.
  4. Control devices from a phone.
  5. Secure credentials and use HTTPS/TLS where possible.
💡 Real-life example: Adding Wi-Fi turns your Arduino from a local robot into a reporter sending news worldwide.
ESP32Wi-Fi/Bluetooth microcontroller
Arduino CloudOfficial IoT cloud platform
MQTTIoT messaging protocol
DashboardLive data display