# Crazyflie simulator does not work

**URL:** <https://community.droneblocks.io/t/crazyflie-simulator-does-not-work/1338>\
**Category:** Crazyflie\
**Created:** [June 18, 2024, 7:22am UTC](https://community.droneblocks.io/t/crazyflie-simulator-does-not-work/1338 "2024-06-18T07:22:47Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Desmond](https://avatars.discourse-cdn.com/v4/letter/d/e495f1/32.png) [@Desmond](https://community.droneblocks.io/u/Desmond)\
**Post date:** [June 18, 2024, 7:22am UTC](https://community.droneblocks.io/t/crazyflie-simulator-does-not-work/1338/1 "2024-06-18T07:22:47Z")

</div>

When I use the Crazyflie simulator, I find that the drone cannot take off. After starting the simulation, the drone has no response, and the propellers do not spin. I am not sure if this web-based simulator needs to be connected to a physical Crazyflie. Can the simulation be done through the simulator if the physical drone is not present?

---

<div class="post-metadata">

**Author:** ![ryan](https://avatars.discourse-cdn.com/v4/letter/r/a8b319/32.png) [@ryan](https://community.droneblocks.io/u/ryan)\
**Post date:** [June 25, 2024, 8:04pm UTC](https://community.droneblocks.io/t/crazyflie-simulator-does-not-work/1338/2 "2024-06-25T20:04:16Z")

</div>

Hi Desmond,

Can you confirm what platform and browser you are using? The Crazyflie simulator does not require a physical drone to be connected. We recommend using the latest version of Google Chrome browser.

Thanks,  
Ryan