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Getting Started

Quick Start Guide

Build, simulate, and flash your very first IoT project in under 5 minutes right in your browser.

Updated Aug 29, 2026
5 min read
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#Tutorial#Quick Start#Arduino#LED Blink

Quick Start Guide

In this guide, you will create a new simulation workspace, connect an LED to pin 13 of an Arduino Uno, and run your first sketch.

[!TIP] You don't need to install Arduino IDE or USB drivers. Everything runs in modern browsers supporting WebAssembly.


Step 1: Create a New Project

  1. Log in to your NexFlux Dashboard.
  2. Click New Project in the top navigation bar.
  3. Select Arduino Uno Starter from the template gallery.
  4. Name your workspace my-first-iot-project.

Step 2: Write Your First Sketch

In the built-in Monaco Code Editor, paste the following standard blink code:

cpp
[object Object],
,[object Object], ,[object Object], LED_PIN = ,[object Object],;

,[object Object],{
  ,[object Object],(LED_PIN, OUTPUT);
  Serial.,[object Object],(,[object Object],);
  Serial.,[object Object],(,[object Object],);
}

,[object Object],{
  ,[object Object],(LED_PIN, HIGH);
  Serial.,[object Object],(,[object Object],);
  ,[object Object],(,[object Object],);

  ,[object Object],(LED_PIN, LOW);
  Serial.,[object Object],(,[object Object],);
  ,[object Object],(,[object Object],);
}

Step 3: Connect Components

  1. Open the Component Drawer on the left palette.
  2. Drag a Red LED and a 220Ω Resistor onto the canvas.
  3. Wire pin D13 to the Resistor, then to the LED Anode (+).
  4. Connect the LED Cathode (-) to the GND rail.

Step 4: Run Simulation

Click the ▶ Start Simulation button (or press Ctrl + Enter).

  • The WebAssembly compiler will compile the sketch in < 150ms.
  • You will see the virtual LED pulsing and live output in the Serial Monitor tab!

Troubleshooting Tips

[!WARNING] If the serial monitor displays garbled characters, ensure the Baud Rate dropdown in the terminal matches Serial.begin(115200).

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