> ## Documentation Index
> Fetch the complete documentation index at: https://mintlify.com/wokwi/wokwi-docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Frequently Asked Questions

> Common questions about Wokwi electronics simulator

Find answers to the most commonly asked questions about Wokwi.

## General Questions

<AccordionGroup>
  <Accordion title="What does Wokwi mean?">
    When choosing the name for Wokwi, we were looking for a short word that would be easy to pronounce and didn't have any meaning yet. We came up with a list of possible names, and picked the one we liked the most, Wokwi.

    Some of the names that didn't make it: Duvav, Hajuu, Chipine, Zeprr.
  </Accordion>

  <Accordion title="How does Wokwi work?">
    Wokwi compiles your code into a binary firmware, and then executes the binary firmware one instruction at a time, as a real microcontroller would.

    If you want to learn about the internals, check out these resources:

    * [Raspberry Pi Pico and RP2040 Deep Dive](https://www.youtube.com/watch?v=Duel_Oaases\&list=PL_tws4AXg7auiZHZsL-qfrXoMiUONBB0U\&index=2) - This 5 hours course will give you good understanding of the RP2040 architecture, and how it works.
    * [Live-coding Raspberry Pi Pico Simulator from Scratch](https://www.youtube.com/watch?v=POCUbWhBXVA\&list=PLLomdjsHtJTxT-vdJHwa3z62dFXZnzYBm\&index=1\&t=0s) - 70 hours long live-coding series where you'll see how we built the Pi Pico simulator, along with explanations about the architecture and design decisions.
    * [AVR8js: Simulate Arduino in JavaScript](https://blog.wokwi.com/avr8js-simulate-arduino-in-javascript/) - Blog post covering the basics of the Arduino simulation engine.
    * [Let's Code Arduino Simulator from Scratch](https://www.youtube.com/watch?v=fArqj-USmjA) - Create a simple Arduino simulator app using Wokwi's [AVR8js](https://github.com/wokwi/avr8js) open-source AVR simulation engine (16 minutes).
    * [Reversing the ESP32 WiFi](https://www.youtube.com/watch?v=XmaT8bMssyQ) - Learn how we prepared the ground for the ESP32 WiFi simulation by reverse engineering the WiFi hardware (32 minutes).
  </Accordion>
</AccordionGroup>

## Using Wokwi

<AccordionGroup>
  <Accordion title="How do I find a project I saved previously?">
    **If you haven't signed in to Wokwi:**

    Use the same device and browser that saved the project and visit [https://wokwi.com/dashboard/projects](https://wokwi.com/dashboard/projects).

    **If you signed in to Wokwi before saving projects:**

    Visit [https://wokwi.com/dashboard/projects](https://wokwi.com/dashboard/projects) to see all projects that you have saved on any device/browser. You can also navigate to your saved projects by clicking on your profile picture and selecting "My Projects" from the menu.

    <Tip>
      Sign in to Wokwi to access your projects from any device or browser!
    </Tip>
  </Accordion>

  <Accordion title="The simulation is slow, how can I make it faster?">
    There are many factors that can affect the simulation speed. Here are some tips that can help you get better performance:

    * **Chrome is usually faster than Firefox** - Try using Chrome or a Chromium-based browser for better performance.
    * **Add delays in your code** - For ESP32 / Pi Pico code, adding a `delay(10);` call at the beginning of `loop()` can help, as the simulator will have less work to do while the microcontroller is sleeping.

    ```cpp theme={null}
    void loop() {
      delay(10);  // Give the simulator a break
      // Your code here
    }
    ```
  </Accordion>

  <Accordion title="How can I use Wokwi offline?">
    Wokwi offers an offline mode through the **Wokwi for VS Code extension**.

    To set it up and learn more, visit the official guide: [Wokwi Offline Mode Documentation](/vscode/offline-mode).

    <Note>
      Offline mode requires the VS Code extension and is available for paid subscribers.
    </Note>
  </Accordion>
</AccordionGroup>

## Subscription & Billing

<AccordionGroup>
  <Accordion title="How much does Wokwi cost?">
    **Wokwi is free for personal use.**

    For commercial users and professionals, we offer paid plans with additional features. Check out our [pricing page](https://wokwi.com/pricing) for details.
  </Accordion>

  <Accordion title="How do I change or cancel my subscription?">
    You can manage your subscription, including updating or canceling it, by visiting the [Subscriptions page](https://wokwi.com/dashboard/subscriptions).
  </Accordion>

  <Accordion title="How can I update the payment method for my subscription?">
    1. Go to [https://wokwi.com/dashboard/subscriptions](https://wokwi.com/dashboard/subscriptions)
    2. Click on **"Change"** next to the payment method
    3. Enter your new payment details
  </Accordion>
</AccordionGroup>

## Still Have Questions?

<CardGroup cols={2}>
  <Card title="Join Discord Community" icon="discord" href="https://wokwi.com/discord">
    Get help from the community and Wokwi team members
  </Card>

  <Card title="Contact Support" icon="envelope" href="https://wokwi.com/contact">
    Reach out to the Wokwi support team directly
  </Card>
</CardGroup>