Multi-ranger deck

Multi-ranger deck

Laser ranging

Measure distances to objects all round

How it works

The Multi-ranger deck  gives the Crazyflie 2.X the ability to detect objects around it. This is done by measuring the distance to objects in the following 5 directions: front/back/left/right/up with mm precision up to 4 meters.

To get the most out of your Multi-ranger it should be paired with a Flow deck V2 , which will measure the movement along the ground and the distance to the ground. It gives the Crazyflie the capability to sense the space around it and could react when something is close and for instance avoid obstacles.

It also allows to start working on environment-aware problems like Simultaneous Localization And Mapping (SLAM) algorithms.



  • Fast, accurate distance ranging
  • Measures absolute range up to 4m in 5 directions
  • Eye safe

Mechanical specifications

  • Weight: 2.3g
  • Size (WxHxD): 35x35x5mm
  • Designed for mounting on top of the Crazyflie 2.X

Electrical specification

  • 5 x VL53L1x ToF sensor to measure distance up to 4 meters within a few millimeters (depending on surface and light conditions)
  • PCA9534 I2C IO expander connected to resets of all
  • 1-wire memory for automatic expansion deck detection


See the compatibility matrix


Firmware implementation

The Multi-ranger deck is being handled in its driver in the crazyflie firmware.


Check out the multi-ranger based python demos in the Crazyflie Python Library example folder.

Here is the video of the point cloud example

And here from the push demo (also featured in Usage tab)


If you have any further questions please contact