Most hardware just sits there. This one talks back — and remembers you.
AIPI Lite is an AI character — a voice, a memory, a personality you write yourself. Pick from 30+ voices out of the box; it learns you the longer you use it. Build it into a robot, a speaker, anything — and the hardware finally has a soul.
Inside the community: bigger discount drops, member builds, early access.
$5 off · SOLDER auto-applied at checkout.
Six labeled pads on the back; protocol spec on the way (waitlist below).
The back of the device is the part most companies hide.
Ours has six pads, labeled, in plain sight. Here's what they're for.
Lifeblood VBAT + GND
Direct access to the battery rail. Power external circuits from the same source the device uses. Or — go the other way — solder a bigger battery, a solar panel, or a different power architecture entirely. The device doesn't care where its electrons come from.
Voice-out TX + RX
A second mouth, for talking to other machines instead of to you. Connect AIPI's UART to a Pi, an Arduino, an STM32, another microcontroller. AIPI sends the AI commentary; the partner board turns the wheels, swings the arm, prints the receipt. Same protocol on both ends, public on the wiki.
Senses IO40 + IO41
The two cleanest GPIO on the chip — neither is a strapping pin, neither is reserved by the SoC. Each can become an I²C bus, an ADC channel, a touch input, a PWM output for servos, or an interrupt that wakes the robot when something in the world changes. This is where you give the robot its sight, its touch, its reflexes.
Pick a voice. Or clone your own.
Six characters ship out of the box. Each one is a starting point you can rewrite at xdc.aipi.com — change their lines, change their personality, change everything but the voice. Or replace the voice itself.
Garage Mentor
Speak & Build
Ham Radio Friend
Plucky Droid
Patient Mainframe
Wonder Host
Most dev boards have no soul.
Most AI robots have no body to modify.
Some dev boards wait silently in your drawer for you to give them purpose. Some AI pets at the toy aisle ship with personalities you can't edit and shells you can't open. AIPI Lite sits between — a finished AI robot you can disassemble, reprogram, extend, and rebuild without losing the part that makes it feel alive. Same brain, different body — a sculpture you're carving, a prop you're machining, a figure you're 3D-printing.
Not just an ESP32 dev kit — the AI stack is the hard part.
Not just a Raspberry Pi — Pi runs Linux. AIPI runs a character.
Not just Alexa — Alexa won't let you solder its UART.
Five steps. You start anywhere. You stop anywhere.
Most people stay on Rung 2 forever and that's fine. Some people reach Rung 5 in a weekend. The robot is the same robot — what changes is how deep you go.
Talk to it before you change anything.
Plug it in. The screen lights up. There's already a character living inside, ready to answer. You don't have to write a single line of code to know whether the device works for you.
Tech drawer ▾
Stock firmware. Default Xorigin agent. Free tier includes 10 starter agents. Cloud-based GPT-4.1 on Free; Pro+ unlocks GPT-5.2.
Teach it who it is.
Open xdc.aipi.com on any browser. Write the character: who they are, how they speak, what they care about. Paste in your knowledge — up to 5,000 characters on Free and Pro, 20,000 on Ultra. Now the robot is no longer Xorigin's. It's yours.
I'm not a hardware background, but I like to code and tinker on the side.
— Colin F., 45 agents and counting
Tech drawer ▾
Character-definition system. Knowledge base via web interface (text input only, no file upload). Changes propagate to device over WiFi within seconds.
Make it sound like someone real.
Clone a voice — yours, a loved one's (with permission), or any properly licensed track. Once approved, your character speaks with that voice. Most people stop here. The device is now a fully personal AI robot with the personality and voice you chose.
Tech drawer ▾
Voice cloning is included with Pro ($9.99/mo, capped at 5 tracks), Ultra ($15.99/mo, capped at 10 tracks) and Lifetime ($199 one-time, unlimited tracks). Approval window up to 24 hours. Voice license verification required.
Give it a body.
Software side, no soldering yet. AIPI speaks MCP. Wire it into the services and home systems you already run — your character can read from them, trigger them, hold a conversation around them. Most builds start here.
Ready to solder? AIPI's TX and RX pads connect to a Pi, Arduino, or STM32 over UART. Send your robot a line over the documented protocol, and watch AIPI talk while your partner board drives the servos, the wheels, the head turn. We provide the soul. You sculpt the shell.
Robert Lipe's hardware reverse-engineering at robertlipe.com/449-2/ maps the same pads our protocol uses — public, documented, matches our internal docs.
Tech drawer ▾
MCP over SSE, user-addable. UART on TX/RX pads (ESP32-S3 SoC). Frame format and command set documented in the protocol spec.
Give it organs.
Six labeled solder pads on the back. VBAT and GND let you power simple external circuits from the device's own battery. TX/RX is your protocol channel to the partner board you wired up at Rung 4. IO40 and IO41 are direct sensing pins on the AI brain itself — ADC, touch, interrupt capable. Tie them to small inputs (a PIR, a button, an analog dial) and the protocol spec lists the events your character can subscribe to.
For everything heavier — multi-axis servos, motor matrices, displays, the moving parts of an art piece — drive it from your partner board on Rung 4. AIPI's two direct pins are reserved for sensing. Anything that turns or moves goes on the body.
I want to hook up some things to the pins... create a smart sensor... humidity, you might say something at me.
— Jason M., currently soldering AIPI into a droid
Tech drawer ▾
VBAT (3.3-4.2V Li-Po raw), GND, UART1 (TX/RX) per the documented protocol, IO40 and IO41 as direct GPIO with ADC and touch capability. Full pinout in §6.
The brain stays ours. The protocol is yours.
AIPI Lite is a closed appliance with an open hardware protocol — six labeled pads, one UART, a documented frame format. Here's the public reference and the official spec.
The pinout, reverse-engineered by the community.
Robert Lipe (robertlipe.com) — three-part teardown and analysis of the board, chips, and audio pipeline. The pinout in our anatomy diagram traces back here, and it matches our internal docs pad-for-pad.
Get the protocol spec the day it ships.
Frame format, command set, baud rate — sent by the team that built the brain. One email. No drip campaigns.
Full specs, pinout, and reference docs ▾
SoC & memory
| SoC | ESP32-S3 |
|---|---|
| Flash | 16MB |
| PSRAM | 8MB embedded |
| USB | Type-C, charging only — see §7 Q1 for firmware policy |
Audio
| Codec | ES8311 |
|---|---|
| Microphone | onboard MEMS |
| Speaker | onboard |
Power & battery
| Battery | Li-Po, 3.3–4.2V nominal |
|---|---|
| Charging | via USB-C, 5V/1A |
Pin assignments (back panel)
| VBAT | Battery rail · 3.3–4.2V raw, capable of sourcing/sinking |
|---|---|
| GND | Ground |
| TX | UART1 TX (protocol channel) |
| RX | UART1 RX (protocol channel) |
| IO40 | GPIO · ADC + touch · stock firmware uses this for volume |
| IO41 | GPIO · ADC + touch · fully-free direct sensing pin |
Reference docs
| Wiki | static.aipi.com/AIPI_InstructionBook/AIPI_InstructionBook.html |
|---|---|
| Reverse-engineering writeup | www.robertlipe.com/449-2/ |
Questions Makers actually ask.
Q1 ·Can I run my own firmware?
Not officially. AIPI Lite is a closed appliance — we don't open-source the embedded firmware, and we don't publish a flashing flow. What we do open is the six-pad UART protocol, so your AIPI can talk to a Pi or Arduino you already own and let you build whatever body you want around it. The brain stays ours; the body is yours.
Q2 ·Can I run it without an internet connection?
No. The LLM runs in the cloud, so AIPI needs WiFi to think. The protocol layer (Rung 4) is local — your AIPI can drive a partner board's offline hardware (servos, sensors, displays) over UART regardless of network state. But the conversation itself requires the cloud.
Q3 ·What's the catch with the subscription?
No catch. Free tier ($0) gives you 10 agents, 5K KB, GPT-4.1. Pro ($9.99/mo) and Ultra ($15.99/mo) unlock voice cloning, larger KB (Ultra: 20K), and more recent models including GPT-5.2.
Q4 ·Why are the back contacts exposed?
Because we want you to use them. Most consumer devices hide their pads behind warranty stickers. We labeled ours, documented the protocol, and built this page around them.
Q5 ·Is GPIO40 actually free, or is it eating volume button input?
Stock firmware uses GPIO40 for volume control. IO41 is the fully-free direct sensing pin. If your build needs both, route the second sensor through the partner board on Rung 4.
Q6 ·What's the BOM cost?
We don't publish that, but the device retails at $26.99 — there's not a lot of margin to argue about. Buy two and experiment.
Q7 ·Where do I get the protocol spec?
We're publishing the protocol spec on the Xorigin wiki ahead of the next firmware release. Drop your email in §5 above and we'll send it the day it ships — one email, no follow-ups.