Meet
CAIPO
The open-source second brain. A hybrid-architecture wearable built for low-power autonomy and high-performance edge AI.
Two Ways to Experience.
The finished consumer device for everyone, and an open dev kit for builders.
Commercial Standard
CAIPO WEARABLE
The finished wearable. Clip it on, tap once. CAIPO captures moments, answers questions, and builds your second brain silently in the background.
- Always-on edge AI
- One-tap capture
- Private by design
- FlowBrain powered
Developer Only
CAIPO DEV KIT
Build your own CAIPO. Full schematics, CAD files, firmware all open. Fork it, solder it, push improvements back.
- ESP32-S3 + Pi Zero 2W
- Full BOM + Schematics
- 3D-printable case (FDM)
- Community-driven, MIT
Building in Public · Caipo 1.0
CaipoChief Artificial Intelligence Productivity Officer
CAIPO is a fully open-source AI wearable you can source, solder, and ship yourself. Every schematic, every line of firmware, every CAD file. Yours.
Whether you're a maker, researcher, or student. If you're curious, you belong here.
V1.0 Dev Kit · ESP32-S3 + Pi Zero 2W
Architecture Overview
ESP32-S3 XIAO
The Brain · μA
Handling low-power standby, I2S audio routing, and the touch-capacitive interface for instant wake triggers.
Pi Zero 2W / Raspberry Pi
The Muscle · 0mA
Host for heavy lifting: Multimodal Perception and local AI inference.
INMP441 / I2S Mic
INMP441 / I2S Mic
High-fidelity digital audio input for voice interaction.
TP4056
USB-C Charging
MAX98357A
I2S Amp
Input: TTP223
Touch · D0 pin
Camera
CSI interface connected directly to Pi Zero for vision tasks.
TTP223
Touch · D0 pin for tactile interaction and power management.
Anyone curious enough to open the box.
Who is this for?
You don't need a factory, a lab, or a team. You need a soldering iron, some curiosity, and an afternoon. Whether you're a first-time builder or shipping your tenth project. CAIPO is for you.
Makers & Hobbyists
You build things on weekends. You've printed enclosures, flashed firmware, and fried a few boards. CAIPO is your next project.
Researchers
You need a platform, not a product. CAIPO gives you full access to the hardware layer. Swap sensors, write custom drivers.
Students
You want to learn by building. Every design decision in CAIPO is documented and open for you to read.
Contributors
Our Multimodal Perception, Neuroscience, and Space teams are actively building the AI layer. We want you involved.
Under the hood
Two chips. One clever trick.
Most wearables die fast because one chip does everything. CAIPO splits the work. A tiny always-on chip handles the basics, the powerful one wakes only when you need it.
The Sentry
Always awake · Never tired
This chip never sleeps. It listens for your tap, buffers your voice, and watches for the moment you need CAIPO, sipping so little power you'll barely notice it on the battery.
The moment you tap, it flips a switch and wakes up the powerful chip instantly.
The Heavy Lifter
Powerful on demand · Zero drain at rest
This is where the AI lives. It handles your voice, talks to language models, and processes what the camera sees. But it draws zero power until the Sentry calls for it.
Not sleep mode. Not standby. Actual zero. That's what makes the battery last.
How to build
Four steps to your own CAIPO.
Source the parts
Download the BOM and order your components. Can't find something locally? The design is hardware-agnostic. Swap it out and push the driver back.
Print the case
SoonAny FDM printer, PLA or PETG. Snap-fit design, no glue, no supports needed. CAD models are being finalized now.
Flash the firmware
Clone the repo and flash both chips. The build guide walks you through every step, written for desk assembly, not a factory floor.
Push it back
Found a better part? Wrote a cleaner driver? Improved the case fit? Open a PR. Your improvement ships to every future builder.
No file is locked. No doc is paywalled. Everything we have, you have. If you build something interesting, we want to see it.
Schematics
Full PCB schematics and source files. Read it, modify it, make it yours.
Firmware
Full codebase for both chips. MIT licensed. Fork freely.
Full BOM
Every component with part numbers and supplier links.
Driver API
Swap any sensor in or out. Push your driver back.
CAD Files
FDM case for PLA/PETG. Snap-fit, no glue, no supports.
Build Guide
Step-by-step for desk builders, not factories.
Bill of Materials · V1.0
Ready to build? Here's what you need. Can't find something locally? Swap it. Push the alternative driver back to the repo.
| Ref | Component | Role | Connection |
|---|---|---|---|
| U3 | Seeed Studio XIAO ESP32-S3 | The Brain | Main 3.7V Rail |
| U4 | Raspberry Pi Zero 2W | The Muscle | 5V Regulator Out |
| U1 | TP4056 USB-C Module | Charging | Battery / System Rail |
| U2 | Pololu 5V S13V30F5 | Pi Power | Controlled via PI_EN |
| U5 | TTP223 Touch Sensor | Wake / UI | ESP32 Pin D0 |
| U6 | INMP441 MEMS Mic | Audio In | ESP32 I2S Bus |
| U7 | MAX98357A Class-D Amp | Audio Out | ESP32 I2S Bus |
| SPK1 | uxcell 1W 8 Ohm Speaker | Speaker | Amp output pins |
| D1 | WS2812B LED | Status Light | ESP32 Pin D1 |
The hardware skeleton is ready.
Help us build Caipo
Our Multimodal Perception, Neuroscience, and Space teams are building the AI layer. Every builder who joins makes it better for everyone who follows.
Coming Soon
Engineered for Presence
Caipo
your AI
Companion
Clip it on. Tap once. CAIPO captures your world, answers your questions, and builds your second brain. Silently, always-on, entirely private.
How it works
Tap. Talk.
Done.
One tap to activate
The TTP223 capacitive sensor works right through the case. A single tap wakes CAIPO and starts listening. No buttons, no screens.
Capture anything
Voice commands, ambient notes, visual scenes via the CSI camera. CAIPO processes everything on-device. Nothing leaves your pocket.
Your second brain builds
FlowBrain organizes what you capture into a personal knowledge base. Ask anything about your day, your notes, your context.
System Capabilities
Built for the real world
A multi-modal architecture designed for the edge.
Visual Intelligence
Object recognition, OCR text capture, scene understanding, visual search, and AR capabilities via the integrated CSI camera.
Voice Interaction
Multi-language support, context-aware responses, natural language processing, voice identification, and ambient noise filtering.
Privacy First
On-device processing only. No cloud dependency, encrypted local storage, user-controlled data. Built on open-source auditable firmware.
All-Day Battery
Hybrid power architecture means the ESP32 sips μA always-on while the Pi draws zero until needed. USB-C charging.
Seamless Connectivity
BLE + Wi-Fi, phone companion app, offline-first design, smart notifications, and API integrations.
Smart Automation
Task automation, workflow optimization, smart reminders, and process learning. All handled by FlowBrain in the background.
Want to build it yourself?
The Dev Kit V1.0 is available now. Full schematics, BOM, firmware, all open-source.
Available now.
Simple, Transparent Pricing.
While CAIPO is in development, join our early access program to help shape our pricing and features. The dev kit is free and open source. Always.
Level 01
Basic
- Basic AI assistance
- Voice commands
- Document scanning
- Cloud Storage
- Mobile App Access
Level 02 // Recommended
Pro
- Everything in Basic
- Advanced automation
- Priority processing
- Extended storage
- API access
- Premium support
Level 03
Custom
- Everything in Pro
- Custom integrations
- Dedicated support
- Unlimited storage
- Team management
- Advanced security
Join Early
Access
Get exclusive access to CAIPO during our development phase and help shape its future. Early members influence what gets built next.