• This ESP32 WhatsApp notification project shows how to send real-time WhatsApp alerts directly from an ESP32 using WiFi and the CircuitDigest Cloud WhatsApp API. • The ESP32 reads sensor data, checks for a defined condition such as high temperature or motion detection, and immediately pushes a WhatsApp alert to your phone. • And the best part is you do not need a WhatsApp API subscription or GSM module or SIM card to do this. • The idea behind this tutorial is to help engineers and makers to quickly and easily send WhatsApp messages from ESP32. • For the sake of demonstration, we have connected a DHT11 sensor to the ESP32 to read and send the temperature and humidity values as a WhatsApp alert message. • But you can use it for any project as you see fit.

Article Summaries:

  • The ESP32 WhatsApp notification project demonstrates how a microcontroller can send real‑time alerts to a phone without a GSM module or WhatsApp subscription. By connecting a DHT11 temperature/humidity sensor, the ESP32 reads data over Wi‑Fi and posts an HTTPS request to the CircuitDigest Cloud WhatsApp API. The cloud service authenticates the request, formats a pre‑approved template, and delivers the message to up to five registered numbers, limited to 100 messages per month. The tutorial highlights the minimal hardware needed-an ESP32 board, the DHT11, breadboard, and USB cable-and offers links to related ESP32 notification guides.
  • This ESP32 WhatsApp notification project shows how to send real-time WhatsApp alerts directly from an ESP32 using WiFi and the CircuitDigest Cloud WhatsApp API. The ESP32 reads sensor data, checks for a defined condition such as high temperature or motion detection, and immediately pushes a WhatsApp alert to your phone. And the best part is you do not need a WhatsApp API subscription or GSM module or SIM card to do this. The idea behind this tutorial is to help engineers and makers to quickly and easily send WhatsApp messages from ESP32. For the sake of demonstration, we have connected a DHT11

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