Petoi Nybble Q

$435 – $515

AvailableRobot catPre-assembledVoice cmdsOpen source

≤ 1 weekShipping: In stock.

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Overview

The current version of Petoi's robot cat, replacing the wooden Nybble kit. It has a 3D-printed body, an ESP32 board in place of the old Arduino-class one, and servos that report their position, so poses can be taught by moving the legs by hand. It comes assembled, measures 240 × 115 × 155 mm, and runs about 45 to 60 minutes per charge. It uses the same OpenCat software as the Bittle X, with 11 joints instead of 9, adding a second head joint and a tail. Its built-in skills include walk, trot, crawl, bound and dozens of cat poses and tricks. Unlike the Bittle X, it cannot jump or flip. Petoi says the extra servo weight rules out jumps, and the head and tail block front and back flips. A custom jump or sideways roll could be built in Skill Composer, and the alloy servos give more room for this. Software on a computer can also set each joint angle over serial, with a delay of a few milliseconds. Petoi lists it for ages 10 and up.

Type: Quadruped robot · Desktop / hobby kits
Maker: Petoi (US/China)
Released: 2024
Price: $435 – $515
Status: Available
Best for: Ages 10+
Programming: Open source (hardware + software)

Price and shipping

Pre-assembled only. Cream with lite (plastic-gear) servos $435, cream with alloy servos $515, white with lite servos $435. Petoi's own page also mentions a $249 kit, but Petoi says only the pre-assembled version is sold, and a kit is not on its schedule.

Shipping: In stock. Petoi ships from a US warehouse, and the cream versions are in stock. The white version shows "very limited stock" and is sold out on petoi.com. Maker Shed has the cream lite-servo version in stock ($435). RobotShop lists the alloy version ($515) as re-stocking soon. Amazon does not carry it. Petoi ↗

Specifications

Category	Quadrupeds · Desktop / hobby kits
Released	2024
Country	USA, China
Availability	Available
Programmability	Open source (hardware + software)
Built-in autonomy	Reactive · Responds to its surroundings without a map, such as avoiding obstacles or following a person
LLM support	Possible via SDK · No built-in LLM. It understands 35+ preset voice commands offline (up to 10 more can be added in C++), and its SDK lets software on a computer control it.
MuJoCo simulation	None found · Petoi has not published a Nybble Q model. Its ROS 1 URDF of the original Nybble could be a starting point.
NVIDIA Isaac simulation	None found · Petoi has not published a Nybble Q model. A community Isaac Gym environment (2024) models the original Nybble.
Gazebo simulation	None found · Petoi has not published a Nybble Q model. Its ROS 1 Gazebo package models the original Nybble. ros_opencat (Nybble) ↗
Best for	Ages 10+ (maker rating)
Vision sensors	Sonar / ultrasonic
Actuators	Hobby servos
Audio	Microphone
Compute type	Arduino / ESP32 / microcontroller, Raspberry Pi, NVIDIA Jetson
Compute	BiBoard (ESP32) with Wi-Fi and Bluetooth, optional Raspberry Pi or NVIDIA Jetson
Weight	404–433 g
Speed	About 1 body length/s, roughly 0.24 m/s (maker). The alloy-servo version is only a little faster, since it is also heavier.
DOF	11 servos (8 legs, 2 head, 1 tail)
Sensors	IMU, ultrasonic distance sensor with RGB LED, voice microphone, servo position feedback, optional back touch sensor
SDK	OpenCat firmware (Arduino C++), Python API, Petoi Coding Blocks, Skill Composer, ROS 2

Common questions

How much does Nybble Q cost?

Nybble Q is listed at $435 – $515. Pre-assembled only. Cream with lite (plastic-gear) servos $435, cream with alloy servos $515, white with lite servos $435. Petoi's own page also mentions a $249 kit, but Petoi says only the pre-assembled version is sold, and a kit is not on its schedule.

Can Nybble Q be bought today?

Yes, it is on sale. Petoi ships from a US warehouse, and the cream versions are in stock. The white version shows "very limited stock" and is sold out on petoi.com. Maker Shed has the cream lite-servo version in stock ($435). RobotShop lists the alloy version ($515) as re-stocking soon. Amazon does not carry it.

Who makes Nybble Q?

Nybble Q is made by Petoi (US/China). It came out in 2024.

Can Nybble Q be programmed?

Open source (hardware + software). OpenCat firmware (Arduino C++), Python API, Petoi Coding Blocks, Skill Composer, ROS 2.

Does Nybble Q have AI chat or LLM support?

Possible via SDK. No built-in LLM. It understands 35+ preset voice commands offline (up to 10 more can be added in C++), and its SDK lets software on a computer control it.