Petoi Bittle a robot dog that fit in your hand

Petoi launched their new robot dog “Bittle”:  this new robot came from the previous worldwide success of Nybble robotic kitten & the experience from the OpenCat Project.

This lightweight quadruped robots can walk in your home ( or your desk), be your watchdog , be your friend or you can use as robotic platform to run your code and make it move like Spot or MIT’s Cheetah robots.

It looks like a mini version of the Boston Dynamic’s Spot  with the yellow/black colour pattern and way cuter!

Bittle “Body”

The robot has a body size of 20cm x 11cm x 11cm , and weighs less than 280g , it uses x9 high quality   P1S Coreless Servos motors ( +1 additional as spare unit) for smooth and precise movements. The brain of Bittle is NyBoard v1 ( for normal usage)  or BiBoard V0 ( more powerful,  for developers )

  • NyBoard V1 has an Atmega328P with 16MHz CPU, 2K SRAM, and 32K flash. We also added an 8K I2C EEPROM, an IMU, a servo driver for 12 PWM servos, an infrared receiver, and a buzzer. It has a 2×5 socked to mount on a Raspberry Pi.
  • BiBoard V0 has an ESP32 with 240MHz dual-core CPU, 520KB SRAM, and up to 16M flash. It has built-in WiFi/Bluetooth, 12 PWM servo pins, an IMU, an infrared receiver, an audio amplifier, and a speaker. It has several communication ports to connect to other devices.


Petoi Bittle is a tiny but powerful robot that can play tricks like real animals. We fine-tuned every bit to fit agile manoeuvrability into a palm-sized robot pet. You can bring Bittle to life by assembling its puzzle-like frame and downloading our demo codes on GitHub.



OpenCat started as the founder Rz Li’s pet project in 2016. After the demo video went viral in 2018, he devoted all his time and resources to bring this sophisticated and cute robot to the public. He founded Petoi and successfully crowdfunded the Nybble project in 2018. All the earnings have been put into the fulfilment of Nybble and the R&D of Bittle.



Bittle can be “modded” and expanded , using a 3D printer you can change its design and print a different head for example, make longer legs or create an adaptor to add your own circuit board.  It also can use external sensors compatible with Arduino

List of official modules:

  • The intelligent camera module integrates multiple vision recognition algorithms running on its ESP32 dual-core processor. It can return recognised human body, objects, and symbols through serial/I2C/WiFi at a rate of 25fps or 50fps.
  • Biboard v0 : an  ESP32 based development board with native Bluetooth and WiFi connectivity ,
  • The Bluetooth dongle is compatible with Windows, macOS, and Android. It can also work on IOS with some auxiliary software. It can be used for uploading Arduino sketch or communicating with the NyBoard. The WiFi module can host a simple WebUI and communicate with the NyBoard.

Grab your Robot now on Amazon!



•About Me: Hi, my name is Marco, I'm a tech enthusiasts and Software Developer . Robots have been my passion since I was a child! •PersonalRobots Mission : We will guide you in choosing the perfect domestic robot, check our robot reviews! Learn with us how to build your robot and check our opensource robotic project :)

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