Petoi Quaddle

$99 – $215 (Kickstarter)Kickstarter pledges start at $99 for the Builder (Super Early Bird), with later Builder tiers at $109–$144, the Buddy at $139–$175 and the Scout at $199–$215. Shipping is $15 to most regions and $18 to the EU. A $15 tier is a printable action figure, not the robot. Petoi lists retail prices of $179 (Builder+), $219 (Buddy) and $269 (Scout) on its Quaddle page (October 2026). Kits and pre-assembled units are both offered.

Announced onlyKickstarter4 servosOpen sourceESP32-S3Palm-sized

Not releasedShipping: Kickstarter delivery est. Dec 2026. The Kickstarter campaign is live until October 8, 2026 and has passed its goal. Petoi estimates delivery to backers in December 2026. No retail or pre-order listing outside Kickstarter was found yet. Kickstarter ↗

Kickstarter campaign ↗Official Quaddle page ↗OpenCat (GitHub) ↗

Overview

Petoi's smallest quadruped walks, strafes and spins on only four servos, one per leg, using a spring-assisted leg mechanism instead of the two servos per leg on Bittle and Nybble. It runs Petoi's open-source OpenCat firmware on ESP32-S3 boards, has an OLED face, swappable 1800 mAh batteries (1–1.5 h per charge) and snap-on bodies, and the Buddy and Scout versions add voice chat and a hand-taught record-and-replay mode. The Kickstarter campaign passed its $50,000 goal and ends on October 8, 2026, with delivery estimated for December 2026. Petoi has delivered earlier crowdfunded robots, so the risk is mostly delay. It suits beginners and educators who want a cheap programmable legged robot with a path from blocks to C++ and ROS.

Versions compared

	Builder / Builder+	Buddy	Scout
Retail price (Petoi)	$179 (Builder+)	$219	$269
Kickstarter pledges	$99 – $144	$139 – $175	$199 – $215
Weight	170 g	180 g	198 g
Battery life (swappable 1800 mAh pack)	1.5 h	1.3 h	1 h
Hardware
ESP32-S3 motion core and gyroscope	●	●	●
Second ESP32-S3 AI core	–	●	●
Servos	4	4 with position feedback	4 with position feedback + 1 micro servo for the sensor head
Raspberry Pi Zero socket	●	●	●
Touch pads and microphones	–	●	●
Infrared distance, light and gesture sensors	–	Listed by CNX, not by Petoi (unconfirmed)	●
AI vision module	–	Optional per CNX (unconfirmed)	Optional
Features
90+ moves and tricks on OpenCat, coding in blocks, Python, C++ and ROS	●	●	●
LEGO-compatible blocks	●	●	●
Open-domain AI voice chat	–	●	●
Learn & Replay (teach a trick by moving the legs by hand)	–	●	●
Touch reactions	–	●	●
Smart-home control (optional)	–	●	●

Prices and features come from Petoi's Quaddle page, and weights, battery life, boards and servos from CNX Software's spec list (September 2026). The $99 – $144 Kickstarter tiers are for the Builder, and Petoi's retail list names a Builder+ at $179, but the difference between the two isn't spelled out (unconfirmed). Petoi Quaddle page ↗ · CNX Software ↗

Specifications

Category	Quadrupeds · Desktop / hobby kits
Released	2026
Country	USA
Availability	Announced only
Crowdfunding	Kickstarter · Live campaign · 482 backers · $108,051 raised of a $50,000 goal · Sep 2, 2026 – Oct 8, 2026 · delivery est. Dec 2026 (as of Oct 6, 2026) Campaign ↗
Sales	482 Kickstarter backers, $108,051 raised (2026, estimate) Kickstarter ↗
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	Built-in LLM chat · The Buddy and Scout versions add a second ESP32-S3 "AI core" for open-domain voice conversation, with Xiaozhi AI and TuyaOpen smart-home integrations that Petoi says it will open-source before delivery. The Builder version has no AI core. CNX Software ↗
MuJoCo simulation	None found · Nothing found. Petoi offers its own browser simulator (built with Ape Robotics), not a MuJoCo, Isaac or Gazebo model.
NVIDIA Isaac simulation	None found · Nothing found. Petoi offers its own browser simulator (built with Ape Robotics), not a MuJoCo, Isaac or Gazebo model.
Gazebo simulation	None found · Nothing found. Petoi offers its own browser simulator (built with Ape Robotics), not a MuJoCo, Isaac or Gazebo model.
Best for	Ages 12+ (estimated)
Vision sensors	Camera
Actuators	Hobby servos
Audio	Speaker, Microphone
Compute type	Arduino / ESP32 / microcontroller, Raspberry Pi
Compute	ESP32-S3 motion core on all versions, a second ESP32-S3 AI core (16 MB flash) on Buddy and Scout. Optional Raspberry Pi Zero mounts on top over UART
Weight	170 g (Builder), 180 g (Buddy), 198 g (Scout)
Speed	1.8 body lengths/s trotting, 3 body lengths/s gliding, 90°/s spinning (maker), on an 11 cm body
DOF	4 servos (one per leg), Scout adds a micro servo for its sensor head
Sensors	Gyroscope on all versions. Buddy and Scout add 2 infrared distance sensors, 2 light sensors, gesture sensing, 4 touch pads and 2 microphones. Scout adds a radar sensor head and an optional AI vision module
SDK	Yes (block coding at code.petoi.com, Python/MicroPython, Arduino C++, ROS/ROS 2 through a Pi Zero or over Wi-Fi/Bluetooth)

Timeline

Sep 2, 2026Campaign launchedPetoi launched the Quaddle Kickstarter campaign. Kickstarter ↗
Sep 25, 2026Trade showQuaddle was scheduled to be shown at Maker Faire Bay Area (September 25–27). Make: ↗
Oct 8, 2026 (est.)Campaign endThe Quaddle Kickstarter campaign ends. Kickstarter ↗
Dec 2026 (est.)Estimated deliveryEstimated delivery of Quaddle to Kickstarter backers. Kickstarter ↗