Armzz & Buzz

Home robot crew · Day 1

Buzz talks.
Armzz does.

A talking space ranger and a two-armed robot cart, learning to share a home.

Meet the crew
Buzz Lightyear, in white, lime and purple armour under a clear dome helmet, riding on Armzz: a white three-shelf cart with two robot arms, a camera head and a spinning lidar. Buzz's small computer with its microphone array and speaker sits beside them. Click either robot and they will say something.

Meet the crew

The real Buzz: a Robosen Buzz Lightyear robot with a clear dome helmet, photographed at home.

Buzz: the talker.

A Robosen Buzz Lightyear with a voice of his own.

  • Hears “Hey Buzz” and answers in his own voice, mouth moving along.
  • Knows 209 film lines by heart, and can say anything else too.
  • Flips the lights and tells you how warm it is.

Armzz: the doer.

An XLeRobot: two robot arms, a camera head and a spinning lidar on a white three-shelf cart.

  • Finds you in the room and keeps looking at you.
  • Looks around, stretches and keeps a diary.
  • Turns its head on a word: “Hey Buzz, look at the door.”

Built, tested and kept honest by one human at home.

Tech specs

The label on the back of the crew. Skim it for a smile, read it for the part names.

Robot Facts Buzz: the talker

Serving size: 1 home

Servings per home: 2 robots

% Daily Value*

  • BodyRobosen Buzz Lightyearmouth and wings move—
  • ComputerRaspberry Pi 5with a microphone array and a speaker—
  • LinkBluetooth LEto the robot—
  • Ears“Hey Buzz”listens on the Pi itself—
  • WordsSpeech-to-text modelon a GPU at home—
  • BrainAn LLMon the crew’s own GPU, at home—
  • VoiceA voice of his owngenerated at home, tuned brighter and sharper—
  • Repertoire209 film linesplus anything new—
  • Back sensorBNO08650 readings a second over Bluetooth, for walking tests—
  • Unprompted lines4 an hour at most10 minutes apart, only when something happens—
  • Idle fidgeting0he stands perfectly still on purpose0%*
  • WingspanDramatic110%*

Ingredients: Robosen Buzz Lightyear, Raspberry Pi 5, microphone array, speaker, Bluetooth LE, a speech-to-text model, an LLM, a GPU, a voice model, BNO086.

*Daily values are made up. The specs aren’t.

Robot Facts Armzz: the doer

Serving size: 1 home

Servings per home: 2 robots

% Daily Value*

  • BaseXLeRobot 0.4.0on a white three-shelf cart, 2 drive wheels—
  • Arms2 × SO-1016 motors each (12)—
  • EyesCamera headplus a fisheye body camera—
  • LidarRPLidar C1~10 spins a second, out to 12 m—
  • SoftwareROS 2—
  • Self-check3 cameras + AprilTagsto measure each arm joint’s real angle—
  • Curiosity~2 questions an hourat most, on its own budget200%*
  • Snack capacityOne shelfuntested100%*
  • CordOne, for nowcord-free is coming next—

Ingredients: XLeRobot 0.4.0, SO-101 ×2, RPLidar C1, ROS 2, camera head, fisheye body camera, AprilTag stickers, white three-shelf cart, drive wheels.

*Daily values are made up. The specs aren’t.

Contains the crew, together

  • Moods75 follow the clock, 2 follow people
  • Quiet hours10 pm–8 am
  • Cloud AINonehearing, thinking and speaking all run on machines at home
  • Automated tests2,800+run on every change, in about 2 minutes
  • Changes shipped120+11 of them built by the crew itself
  • Since23 September 2026

Small robots, big personalities

  • Just say “Hey Buzz”

    He listens, thinks and answers in a voice of his own.

  • “Look at the door”

    Armzz turns its head to the spot you name.

  • “Where’s the remote?”

    Buzz checks the cameras and remembers where things were last seen.

  • Knows your voice

    He learns your voice when you ask, and doesn’t answer the TV.

  • Keeps a diary

    Ask “What have you been up to?” and get a real answer.

  • Thinks out loud

    At home, their thoughts and decisions play live on a little wall tablet.

Say “Hey Buzz”. Five things happen.

  1. Ears

    hears his name

  2. Words

    turns speech into text

  3. Brain

    writes his answer

  4. Voice

    says it out loud

  5. Mouth

    moves along

All on computers in the house. No cloud.

Armzz sees the room in laser light.

A spinning laser measures everything around the cart, ten times a second, out to 12 metres. Slice by slice, it becomes a map.

A simulated scan of a made-up room.

They keep hours, like good housemates.

Right now at home: …

Waking8–10 am
Lively10 am–6 pm
Calm6–9 pm
Sleepy9–10 pm
Asleep10 pm–8 am

From ten at night to eight in the morning they’re asleep, and Buzz keeps his thoughts to himself.

Good housemates

  • Asleep by ten

  • Asks before learning a face or a voice

  • Heaters off, never on

  • A big red STOP knob

The story so far

  1. First words over Bluetooth

  2. Armzz rolls

  3. A life of their own

  4. A new brain

  5. Thoughts, feelings and curiosity

  6. “Look at the door”

  7. A desk of their own

Origin story

Baby pictures. Robot edition.

A workbench covered in red and black wires, a soldering iron, a power converter and a small power board with yellow plugs. Day 31. The cart gets its own power. A voice from off-panel:Just a few more wires…

Day 31First surgery

The cart gets a power system of its own, built on the bench. “Just a few wires,” they said.

Close-up of a small green power board with a yellow, a black and a red wire soldered on. A heart smaller than a stamp. Armzz:That’s it? That’s my heart?

Day 31First tiny heart

Smaller than a stamp. It turns big power into robot-sized sips.

Close-up of one of Armzz’s black robot arms, covered in square black-and-white tag stickers. Armzz:Why am I covered in stickers? So three cameras can see where every joint really is.

Day 39First tattoos

Square stickers all over the arms, so three cameras can tell where each joint really is.

A webcam on a tripod in the foreground, pointed at the robot cart behind it. Too late. Every arm move gets filmed and checked. Armzz:No photos, please!

Day 39First paparazzi

A camera on a tripod films every arm move, so the crew can check its own work.

Buzz stands on the floor next to the cart’s wheel, looking up at it. Buzz:You’re taller than I expected.

Day 39First time looking up to someone

Buzz, eye to wheel with the cart. Verdict: tall.

At night under purple light, Armzz holds both arms straight up while Buzz stands up high behind it. Day 40. The big stretch. Buzz:Hold it… hold it… three whole minutes!

Day 40First big stretch

Both arms up, held for three minutes. Buzz supervises from up high.

To be continued…

What people are saying

Not for sale, and already five stars. We made these up.

  • ★★★★★

    “Respects quiet hours. Rare in a roommate.”

    — A couch

  • ★★★★★

    “Looked at me, found me, kept looking. Slightly unnerving. Would be stared at again.”

    — A human, mid-sandwich

  • ★★★★

    “Great diary, but it never lets me read it before breakfast.”

    — The pet

  • ★★★★★

    “To infinity, and as far as the cart’s shelf.”

    — Buzz, definitely not biased

  • ★★★★★

    “Respects quiet hours. Rare in a roommate.”

    — A couch

  • ★★★★★

    “Looked at me, found me, kept looking. Slightly unnerving. Would be stared at again.”

    — A human, mid-sandwich

  • ★★★★

    “Great diary, but it never lets me read it before breakfast.”

    — The pet

  • ★★★★★

    “To infinity, and as far as the cart’s shelf.”

    — Buzz, definitely not biased

  • ★★★★★

    “Finally stopped answering me.”

    — The TV

  • ★★★★★

    “Someone said ‘look at the door’ and it did. I’ve never felt so seen.”

    — The door

  • ★★★★★

    “Finally stopped answering me.”

    — The TV

  • ★★★★★

    “Someone said ‘look at the door’ and it did. I’ve never felt so seen.”

    — The door

Coming next

  • Cord-free

    The cart runs on its own power.

  • Road trip

    Armzz learns to drive itself around the house, with Buzz riding on top.

  • Who’s who

    Buzz remembers who said what, with a memory for each person.

Want one?

You can’t buy them, and there’s no waiting list. But you can say hi.

Meet the crew

Batteries not included. Wings included.