Reachy Mini is an open-source, expressive desktop robot designed for hackers and AI builders who want a tangible platform for multimodal interaction experiments. The kit ships as flat-packed 3D-printed parts and electronics that assemble in roughly two to three hours, giving you a 2-DOF neck, two arms, and a head packed with sensors. Creators Pollen Robotics release the full CAD, firmware, and software under the Apache 2.0 license, so every component can be re-printed, modified, or integrated into larger projects. The robot’s multimodal nature is its hallmark: a stereo camera, microphone, speaker, and IMU feed data into a Python SDK that already wraps AI helpers for vision, speech, and language. Out of the box you can run LLM-driven conversation, real-time hand-tracking, internet radio, or any community app published on the Hugging Face Spaces dashboard. One-click install from the dashboard flashes an app directly onto the robot, turning Reachy Mini into a voice assistant, gesture mirror, or telepresence puppet without writing code. Two hardware tiers let you pick the level of autonomy. The **Wireless** version carries a Raspberry Pi Compute Module 4, on-board battery, and Wi-Fi, making the robot completely untethered. The **Lite** variant drops the battery and CM4, instead streaming sensor data and receiving trajectories over a single USB-C cable from a nearby PC—ideal for developers who already have GPU horsepower. Both editions share the same kinematics and software stack, and a MuJoCo simulation model lets you prototype actions before printing a single part.
Category: Humanoids
> Reachy Mini ships as a complete kit from Pollen Robotics (~$300 USD). Component prices below are single-unit retail — Pollen buys at volume, which is why the kit undercuts the sum of parts. ## Reachy Mini (Wireless) | Component | Qty | Unit Price | Total | Notes | |-----------|-----|------------|-------|-------| | Dynamixel XC330-M288-PG servo | 1 | $103.39 | $103.39 | Base body rotation; custom plastic-gear variant of XC330-M288-T | | Dynamixel XL330-M077-T servo | 2 | $27.49 | $54.98 | Antenna actuation | | Dynamixel XL330-M288-T servo | 6 | $27.49 | $164.94 | Stewart platform head (6 DOF) | | Raspberry Pi CM4 (CM4104016) | 1 | $115.00 | $115.00 | 4 GB RAM, 16 GB flash, WiFi | | CM4 controller board (custom) | 1 | — | — | TTL motor bus, CSI camera, mic array, USB-C passthrough | | Power board (custom) | 1 | — | — | 6.8–7.6 V distribution; motor + compute rails | | LiFePO4 battery (6.4 V, 2000 mAh) | 1 | $27.95 | $27.95 | 12.8 Wh; over-charge/discharge/current/short/temp protection | | Raspberry Pi Camera Module 3 Wide | 1 | $38.50 | $38.50 | Sony IMX708, 12 MP, 120° FOV, autofocus | | Seeed reSpeaker XVF3800 | 1 | $54.99 | $54.99 | 4-mic PDM MEMS array, 16 kHz, −26 dB FS, 64 dBA SNR | | Speaker | 1 | $4.95 | $4.95 | 5 W @ 4 Ω | | WiFi patch antenna | 1 | — | — | 2.4/5 GHz dual-band, 2.79 dBi | | Structural parts | — | — | — | ABS, PC, aluminium, steel | | **Retail subtotal (priced parts)** | | | **~$565** | | ## Reachy Mini Lite (USB tethered) | Component | Qty | Unit Price | Total | Notes | |-----------|-----|------------|-------|-------| | Dynamixel XC330-M288-PG servo | 1 | $103.39 | $103.39 | Base body rotation | | Dynamixel XL330-M077-T servo | 2 | $27.49 | $54.98 | Antenna actuation | | Dynamixel XL330-M288-T servo | 6 | $27.49 | $164.94 | Stewart platform head | | Lite controller board (custom) | 1 | — | — | TTL motor bus, CSI camera, mic array, USB-C to host PC | | Power board (custom) | 1 | — | — | 6.8–7.6 V input; no battery | | Raspberry Pi Camera Module 3 Wide | 1 | $38.50 | $38.50 | Sony IMX708, 12 MP, 120° FOV, autofocus | | Seeed reSpeaker XVF3800 | 1 | $54.99 | $54.99 | 4-mic PDM MEMS array | | Speaker | 1 | $4.95 | $4.95 | 5 W @ 4 Ω | | Structural parts | — | — | — | ABS, PC, aluminium, steel | | **Retail subtotal (priced parts)** | | | **~$422** | |