6.1 Connecting and Getting Data

Full example video

The goal of this example is to show you how to connect the NULA MINI to a Wi-Fi network and make a simple HTTP GET request to retrieve data from a webpage.
This is the foundation of all Internet-connected projects. Once your device can send and receive data over the network, you can build dashboards, cloud sensors, and remote controls.

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In this documentation you will learn:

How to connect your NULA MINI to a Wi-Fi network.
How to use the Wi-Fi and HTTPClient libraries.
How to perform a basic HTTP GET request.
How to print the server’s response to the Serial Monitor.

Hardware required

1× Soldered NULA MINI board (with Wi-Fi support)
1× USB-C cable
Wi-Fi network with internet access

All components needed for this example

Setting up the libraries

This example uses two built-in libraries, so no extra installation is required:

Wifi.h handles network connections
HTTPClient.h allows sending HTTP requests and receiving responses.

Connecting to Wi-Fi

To connect to the internet, your board must join a Wi-Fi network.
This is done by providing your Wi-Fi SSID (network name) and password inside the code.

const char* ssid = "Your_SSID";
const char* password = "Your_PASSWORD";

When the sketch runs, the board will attempt to connect to this network and print its status to the Serial Monitor.

Connecting the NULA MINI board via USB-C

Making a simple GET request

Once connected to the network, the board can contact a server on the internet. A GET request asks for information, in the cae of this example, the content of example.com.

HTTPClient http;
String url="http://example.com/";
http.begin(url);    // Connect to the server
int httpCode=http.GET();    // Send the GET request

If successful, the server returns a response and the website's HTML content, which is then printed on the Serial Monitor:

HTTP GET request flow overview

Full example

Full example demonstration video

Check out the full example code on the link below: