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TheCube is designed to be an intelligent desktop assistant, powered by advanced large language models (LLMs) running in the cloud. This enables highly capable natural language interaction, including multi-turn conversations, task automation, summarization, and more. For those who prefer a fully local setup, TheCube also supports optional on-device intent detection. While less capable, these offline algorithms ensure complete privacy while enabling basic functionality without ever connecting to the internet.
powerful AI features, nothing sent to the cloud is stored—ever. The only exception is opt-in telemetry, which helps us improve functionality and performance based on anonymized usage data. If you choose not to share anything, your Cube still runs securely and effectively.
TheCube’s modularity allows you to expand and customize in two distinct ways:
Every Cube includes a bright, full-color, 720x720 4" LCD touchscreen display, ideal for showing schedules, app data, animations, and interactive UI elements. This becomes the face of your Cube—both literally and functionally. On-screen characters can be customized with animation packs, or even replaced entirely with a new character.
TheCube features a built-in stereo microphone pair for voice input and a stereo side-firing speakers for responsive audio. Whether you're asking for reminders or getting AI-generated feedback, it sounds clear and natural right out of the box.
With built-in WiFi and Bluetooth, TheCube connects effortlessly to your network and nearby devices. For developers and tinkerers, the physical expansion ports open up a world of possibilities—build your own modules, interfaces, or hardware add-ons that communicate directly with TheCube’s runtime.
TheCube is powered via USB-C Power Delivery. There is no internal battery, which ensures stable operation and avoids thermal or safety concerns in always-on environments. Use it on your desk, mounted to a wall, or integrated into a workstation—no charging required.
Running on CompanionOS, a highly customized, Linux-based operating system based on Raspbian, TheCube supports a growing ecosystem of modular apps. These range from voice utilities and productivity tools to interactive games and developer utilities. Apps can be created, shared, and installed by anyone in the community using our open API and developer toolkit.
TheCube is built with creators in mind. You can develop custom apps, integrate external APIs, build new hardware modules, or fork the runtime itself. GitHub integration, SDK support, and fully open hardware documentation make it ideal for experimentation and extension.
At its core, TheCube is powered by a Raspberry Pi 5, providing a familiar and well-supported platform with excellent documentation and an active global developer community. This means you can tap into the vast ecosystem of Pi-compatible tools, accessories, and software while still enjoying TheCube’s unique capabilities and form factor.
TheCube is 10 cm x 10 cm x 10 cm and constructed from durable, high-quality ABS. The design is minimalist, compact, and made to complement your workspace. Its magnetic add-on interface is robust and intuitive, encouraging physical interaction without clutter or cables.
TheCube isn’t just helpful—it’s alive with charm. Whether it’s reacting to your presence, commenting on your day, or throwing out the occasional joke, TheCube has a playful personality designed to keep your desk feeling alive.
You can customize its mood, swap out its face, or even build your own expressive characters using our open personality framework. Choose from built-in personas like Geo, Rawr, Lil Flame, or TheCube itself—or make your own.
It doesn’t just do what you say—it makes you smile while doing it. It even has its own blog.
For developers, engineers, and hardware enthusiasts, here’s a detailed breakdown of TheCube’s architecture and internals—everything you need to know to build, extend, or hack your own.
Processor: Broadcom BCM2712 (Raspberry Pi 5 SoC)
RAM: 4GB, 8GB, or 16GB LPDDR4X (based on variant)
Storage:
Main Board:
Power Board:
LCD Backpack:
Microphone Carriers (×2):
USB-C Extension Board:
Display: 4.0" 720×720 IPS LCD with capacitive multi-touch
Audio Out: 2W downward-firing mono speaker driven by onboard amplifier
Audio In: Stereo MEMS microphone pair with software preprocessing
Touch Input: Direct integration with CompanionOS for gesture and tap control
Form Factor: Supports vertical stacking of add-ons: toppers, TheMiniCubes, TheWideCubes
Connection: Each position includes an NFC reader for module detection and pairing
Communication: Wireless via WiFi, Bluetooth, or Ethernet (if module-equipped)
Power: Accessories that attach magnetically have individual power requirements. See these products' specs for more details.
TheCube includes two rear-mounted user-accessible expansion ports—designed to support future hardware upgrades, accessories, and community-made modules. These ports connect directly to the Pi 5’s high-speed interfaces via internal routing and can provide access to:
Input: USB-C PD only, 40W+ recommended (included adapter is 45W)
Power Delivery: Supports 12V-20V input, internally regulated
WiFi 802.11ac (2.4GHz + 5GHz) and Bluetooth 5.0 (onboard Pi radio)
NFC Support: Built into magnetic stacking interface, used for module pairing and ID
Ethernet: Available via optional rear expansion module
Operating System: CompanionOS
AI/LLM Support:
Update System:
Local Runtime API: Unix socket + HTTP interface for app communication
SDKs: Python, JavaScript, C++, Rust (in development)
App Models: Event-driven services, interactive apps, and embedded Web UIs
Hardware Extensibility: Full electrical documentation, module standards, and pinouts published on GitHub
Open Source: Software, schematics, and mechanical files available for developer use or remixing
Internal Active Cooler: Compact heatsink + fan assembly on Pi SoC
Back Panel Cooling Fan: Pull-through design maintains airflow across stacked modules
Thermal Profile: Quiet under idle; dynamic fan control under load
Community Resources
TheCube was designed from the ground up to be open, extensible, and hackable. Whether you're building new apps, integrating with third-party APIs, designing hardware add-ons, or forking the entire runtime, you're welcome here.
We publish everything:
Whether you're writing code, building circuits, or modeling a goofy 3D-printed hat for TheCube—you are part of the team.
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