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Crazyflie 2.1+ / Brushless

Bitcraze · 2019

$270 – $830
AvailablePython from a laptopFully open27–37 gSwarm-readyOptional camera
Weeks+Shipping: ~1–2 weeks.
Remote control: Fly it with cflib in Python through the Crazyradio USB dongle. With the AI-deck, camera frames come separately over Wi-Fi.

Overview

The most "real robotics" drone, with open firmware, a great Python library and research-grade swarm tools. Snap-on decks add optical-flow position hold, multi-direction ranging, Lighthouse or UWB positioning and a camera. The optional AI-deck camera is only a 320 px grayscale sensor, so it suits control, swarm and positioning work far better than vision. The Brushless version flies longer and carries more.

At a glance
Type
Drone · Indoor drones
Maker
Bitcraze
Released
2019
Price
$270 – $830
Status
Available
Best for
Ages 14+
Programming
Open source (hardware + software)

Price and shipping

Getting started bundles are $270 (2.1+) and $500 (Brushless). The AI-deck camera bundles ($610–830) are temporarily out of stock as of October 2026

Shipping: ~1–2 weeks. Ships from Bitcraze in Sweden, plus import duties. Base and STEM bundles are in stock. The AI-deck camera bundles are temporarily out of stock. Bitcraze ↗

Specifications

CategoryDrones · Indoor drones
Released2019
CountrySweden
AvailabilityAvailable
ProgrammabilityOpen source (hardware + software)
Built-in autonomyNone / scripted · Moves only when controlled, or plays preset motions
LLM supportPossible via SDK · Python cflib and ROS 2. Bitcraze's blog features the third-party SwarmGPT research, but there is no official LLM tooling.
MuJoCo simulationOfficial model · In MuJoCo Menagerie (bitcraze_crazyflie_2). MuJoCo Menagerie ↗
NVIDIA Isaac simulationOfficial model · Isaac Lab CRAZYFLIE config and Isaac Sim aerial asset. Isaac Lab robot configs ↗
Gazebo simulationOfficial model · Bitcraze's crazyflie-simulation provides Gazebo models with a ROS 2 bridge. crazyflie-simulation ↗
Best forAges 14+ (estimated)
Vision sensorsCamera
ActuatorsDC / gear motors
AudioNo audio
Compute typeArduino / ESP32 / microcontroller, Laptop / PC as the brain
Remote controlPython from a laptop
Size~10 cm, 27–37 g
DriveNano quadcopter (Flow deck for position hold)
ComputeSTM32 + GAP8 RISC-V AI chip + ESP32
VisionNone on the base drone. The optional AI-deck adds a 320×320 grayscale camera streamed over Wi-Fi at low fps
LidarNone (optional 5-way ToF deck)
SensorsIMU, barometer, optical flow + downward ToF
Runtime~7–10 min
SpeedNot specified
SDKcflib (very active), cfclient, ROS 2 Crazyswarm2, open firmware

Common questions

How much does Crazyflie 2.1+ / Brushless cost?

Crazyflie 2.1+ / Brushless is listed at $270 – $830. Getting started bundles are $270 (2.1+) and $500 (Brushless). The AI-deck camera bundles ($610–830) are temporarily out of stock as of October 2026.

Can Crazyflie 2.1+ / Brushless be bought today?

Yes, it is on sale. Typical shipping time is ~1–2 weeks. Ships from Bitcraze in Sweden, plus import duties. Base and STEM bundles are in stock. The AI-deck camera bundles are temporarily out of stock.

Who makes Crazyflie 2.1+ / Brushless?

Crazyflie 2.1+ / Brushless is made by Bitcraze. It came out in 2019.

Can Crazyflie 2.1+ / Brushless be programmed?

Open source (hardware + software). cflib (very active), cfclient, ROS 2 Crazyswarm2, open firmware.

Does Crazyflie 2.1+ / Brushless have AI chat or LLM support?

Possible via SDK. Python cflib and ROS 2. Bitcraze's blog features the third-party SwarmGPT research, but there is no official LLM tooling.

What age is Crazyflie 2.1+ / Brushless for?

Ages 14+ (estimated).

Ratings & reviews

Related guides

Similar robots

Sources

AI-deck ↗ · cflib ↗