Program a robot cat or dog with Petoi OpenCat: media published by PetoiCamp/OpenCat — Demo video on YouTube (opens in a new tab)Credit: PetoiCamp/OpenCat

Program a robot cat or dog with Petoi OpenCat: media published by PetoiCamp/OpenCat (image 2)

Program a robot cat or dog with Petoi OpenCat

Quad, Easy

OpenCat is Petoi's open-source Arduino and Raspberry Pi framework for small quadrupeds like Nybble and Bittle. It handles gaits, servos and the IMU so you can focus on behaviors.

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Flash the firmware, calibrate the legs, and send serial commands for walk, sit and custom skills. This repo covers the legacy NyBoard; current hardware (Bittle X, Nybble Q) uses OpenCatEsp32.

Hardware & cost: A Petoi Bittle or Nybble kit, or your own servo quadruped.

Difficulty: Easy.

Agent install prompt (paste into Claude Code, Cursor or Codex): "Check whether my Petoi board is NyBoard or ESP32, then set up https://github.com/PetoiCamp/OpenCat (or OpenCatEsp32) per the README, flash it, and send a 'walk forward' serial command from Python."

Source: PetoiCamp/OpenCat on GitHub — https://github.com/PetoiCamp/OpenCat (facts checked against the project README, Oct 2026; prices vary by region).

Quick answers

What do you need to program a robot cat or dog with Petoi OpenCat?: A Petoi Bittle or Nybble kit, or your own servo quadruped.
How hard is it to program a robot cat or dog with Petoi OpenCat?: Easy.

Interfaces