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WiFi Networking

Cirkit Designer simulates a WiFi network with full internet access. You can use WiFi-capable boards like the ESP32-S3 to prototype IoT projects directly in the simulator. Common use cases include:

  • Connecting to MQTT servers to send sensor data
  • Querying web services over HTTP and HTTPS

Connecting to WiFi​

The simulator provides a virtual WiFi access point called CirkitWifi. It is an open access point — no password is required.

Connecting from Arduino​

To connect from an Arduino sketch running on an ESP32-S3, use the following code:

#include <WiFi.h>

void setup() {
  Serial.begin(9600);
  Serial.print("Connecting to WiFi");
  WiFi.begin("CirkitWifi", "");
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print(".");
  }
  Serial.println(" Connected!");
}

void loop() {
  delay(100); // TODO: Build something amazing!
}

Internet Access​

Your simulated device has internet access automatically — no additional setup or gateway installation is required. When your ESP32-S3 code makes a network request (HTTP, DNS, MQTT, etc.), Cirkit Designer routes the traffic through its backend to reach external servers.

Example Projects​

  • Crypto Price Tracker — Fetches live cryptocurrency prices over WiFi and displays them on screen.
  • IP Echo Test — Makes an HTTPS request to httpbin.org and displays the response on an ILI9341 TFT display.