robotindex Petoi Quaddle
Petoi's cheapest, simplest quadruped — a single servo per leg (versus Bittle X's roughly nine) with wheels built directly into the foot tips, confirmed by Petoi's own founder, trading true lifted-paw walking for a rolling/gliding gait. Currently an active Kickstarter campaign, not yet shipping or available at retail.
petoi.com/quaddle →
Image: user-submitted
Specs
Battery
1800mAh, USB-C~1–1.5 hr runtime depending on tier
Weight
170–198 gBuilder/Buddy 170–180g, Scout 198g — per press spec sheet (CNX Software); pre-shipping/provisional
Dimensions
11 × 7 × 7–11 cmScout is taller (11cm) for its radar-head servo — per press spec sheet; provisional
Compute
ESP32-S3 "Motion Core"cheaper/simpler than Bittle X's Biboard; optional AI Core or Pi Zero add-on
Display
Blue OLED-style eyespress sources conflict on OLED vs. "color display" — unresolved
Servos
4 total, 1 per legvs. Bittle X's ~9 — a single-motor linkage per leg, not two
Feet
Wheeled roller toe tipsconfirmed by Petoi's founder — glides/rolls rather than walks like Bittle X
Sensor
PIR motion sensorhuman/motion detection; not an ultrasonic distance sensor
Body
LEGO-brick-compatible shellsnaps onto standard bricks; structural vs. cosmetic depth unconfirmed
Tiers
Builder / Buddy / ScoutBuddy/Scout add AI Core voice chat; Scout adds dual IR distance sensors
Reference Price
Reported early-bird pricing runs roughly $99–149 for the base "Builder" tier, $139–219 for "Buddy," and $179–269 for "Scout," with Petoi's own listed MSRP figures at $149 / $219 / $269. Quaddle is still funding on Kickstarter, so treat any of these figures as provisional until the campaign closes and units actually ship.
Insights
Quaddle's ESP32-S3 firmware is built on Petoi's OpenCat lineage — closer to the ESP32/BiBoard-based OpenCatEsp32 than to the original OpenCat repo — but at Kickstarter launch it hasn't been published. Petoi says it intends to open-source the code before the product ships, so no Open Source badge applies yet.
Firmware & Community
Not yet public
Petoi says Quaddle's ESP32-S3 firmware — an upgraded OpenCat branch — will be open-sourced before delivery. Not currently listed in Builds & Mods.
Specs compiled from Petoi's own Kickstarter and product pages, plus independent coverage from Hackster, Make:, and CNX Software, as of this build — Quaddle is still an active crowdfunding campaign, and final specs, pricing, and delivery timing may change before units ship.