





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.
- 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
| Category | Drones · Indoor drones |
|---|---|
| Released | 2019 |
| Country | Sweden |
| Availability | Available |
| Programmability | Open source (hardware + software) |
| Built-in autonomy | None / scripted · Moves only when controlled, or plays preset motions |
| 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. |
| MuJoCo simulation | Official model · In MuJoCo Menagerie (bitcraze_crazyflie_2). MuJoCo Menagerie ↗ |
| NVIDIA Isaac simulation | Official model · Isaac Lab CRAZYFLIE config and Isaac Sim aerial asset. Isaac Lab robot configs ↗ |
| Gazebo simulation | Official model · Bitcraze's crazyflie-simulation provides Gazebo models with a ROS 2 bridge. crazyflie-simulation ↗ |
| Best for | Ages 14+ (estimated) |
| Vision sensors | Camera |
| Actuators | DC / gear motors |
| Audio | No audio |
| Compute type | Arduino / ESP32 / microcontroller, Laptop / PC as the brain |
| Remote control | Python from a laptop |
| Size | ~10 cm, 27–37 g |
| Drive | Nano quadcopter (Flow deck for position hold) |
| Compute | STM32 + GAP8 RISC-V AI chip + ESP32 |
| Vision | None on the base drone. The optional AI-deck adds a 320×320 grayscale camera streamed over Wi-Fi at low fps |
| Lidar | None (optional 5-way ToF deck) |
| Sensors | IMU, barometer, optical flow + downward ToF |
| Runtime | ~7–10 min |
| Speed | Not specified |
| SDK | cflib (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
Ratings and reviews load on the live site.
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