This tutorial shows how to send an SMS using the Arduino UNO R4 Wi-Fi and the Circuit Digest Cloud API, without using a GSM module, by using board’s Wi-Fi capability to connect to the internet and send an HTTP request to the SMS API.
Components Required
- Arduino UNO R4 Wi-Fi
- USB cable
- Arduino IDE
- Wi-Fi connection
- Circuit Digest Cloud account
- A mobile number to receive SMS
The Arduino UNO R4 WiFi connects to the internet using built-in Wi-Fi and sends an HTTP POST request to the CircuitDigest Cloud API with the recipient’s phone number, your API key, and message. The cloud server processes the request and sends the SMS to the specified number via its SMS gateway.
Applications
- Alerting
- Automation
- Monitoring
- Agriculture
- Education
This project demonstrates how to send SMS from an Arduino UNO R4 WiFi using CircuitDigest Cloud API. It's a useful method for sending notifications in simple IoT applications without needing additional hardware.
For in-depth explanation and code : How to Send SMS with Arduino UNO R4 via Internet?
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