Petoi Bittle – A Palm-Sized Robot Dog for STEM and Fun


Realistic little Robot Dog construction kit with lots of fun plays: Bittle is the world’s first palm-sized, a servo-activated bionic robotic dog with 1 hour of playtime. Have your very own programmable robot pet navigate with life-like movements and perform tricks with the remote control or the mobile app.

Petoi Bittle – A Palm-Sized Open Source Bionic Robot Dog for STEM Learning and Fun

  • Coding / STEAM / STEM / Robotics Learning: build and program your Bittle to perform new skills and tricks while harnessing all aspects of STEM learning. Begin with Scratch block-based coding and advance with Arduino IDE and C++/Python. Develop your moto, physics, engineering skills & problem-solving abilities.
  • DIY your robot: an excellent and challenging hands-on learning opportunity to assemble your robot with 3D puzzle parts. Suitable for adults and children over the ages of 12.
  • Program AI tasks: program Bittle to see, listen, sense the surrounding environment and navigate the world with the optional intelligent camera module or other Arduino/Raspberry Pi compatible sensors.
  • Open Source robot: Bittle operates on OpenCat, an open-source quadruped robot platform published on Github that fuses multiple gadgets into one organic system, offering endless programming and customization possibilities.

The world’s First Palm-sized,  Servo-activated Robot Dog

* Dimensions:  200 x 110 x 110mm(7.9 x 4.3 x 4.3inch);  Weights:  290g(10.22oz)

Programmable Artificial Intelligence – Leverage the Open Source Hardware Module Ecosystem

  • Built on NyBoard, a board fully compatible with Arduino Uno. In addition, common Arduino modules can be attached.
  • Raspberry Pi support – can connect to a Raspberry Pi 3A+/Zero directly. It will power the Pi and communicate with the Pi through the serial port.

Built on OpenCat,  an Open Source Project for Quadruped Robots

Adapt OpenCat for Your Purposes and run any Customized Version on Bittle


Play with Your “Dog” for Fun

Perfect for STEM & Robotics Education

Learn Coding, Customize & Program Your Pet to Make It Come To Life With Amazing & Cute Tricks

* Use the optional intelligent camera module mounted on Bittle’s mouth to recognize and follow the object

Built for Robotics & AI Research

Affordable Quadruped Robots to Make Your Research & Prototype Dream Come True

* Climbing up a step under real-time instructions sent through Bluetooth

Software & Programming Support

Petoi  Mobile App:  iOS, Android

Arduino IDE

CodeCraft – Scratch-based drag & drop programming

Python API sending serial commands


Wireless Dongles – support Wifi and Bluetooth connectivity

Battery – a Li-ion battery pack for about one hour of continuous walking

Board – NyBoard V1

Bittle is powered by NyBoard V1, a customized Arduino board with an Uno chip. It supports balancing and detecting body status (orientation and acceleration), infrared, serial communication, and Raspberry Pi


  • a controllable angle of 270 degrees
  • eight P1S servos to actuate Bittle’s walking joins, one is for head panning.

Puzzle-like Body Frame

  • Interlocking frame as a 3D puzzle with very few screws involved
  • On average, it takes about one hour to put together the body from scratch.

Extensible with Arduino & Raspberry Pi Modules(Optional Add-ons)

The intelligent camera module

  • integrates multiple vision recognition algorithms to return recognized human body, objects, and symbols through serial/I2C/WiFi.
  • stream video through WiFi.
  • Check here for more details

petoi-petoi initelligent camera module

Testimonials and Reviews

Well Received by Media

petoi-bittlle media coverage

Thriving Community to Support Each Other

What’s included

  • Bittle
  • Bittle battery
  • Bittle shell
  • NyBoard V1
  • Bluetooth  dongle
  • Wifi dongle
  • 10x P1S servos

Note: Bittle is for 13+ years old, not a toy for small kids. We recommend parental guidance to appreciate its rich content and avoid damage or injury.

Additional information

Weight 1.5 lbs
Dimensions 10.63 × 7.5 × 2.76 in


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Product Manuals

If applicable, the Product Documentation, Reference Materials, CAD design(s),.STEP file(s) and/or other drawing files, Manuals, and Tutorials will be available for download upon purchase. The order confirmation email will include a downloadable link to the product file(s), which can also be downloaded from the My Account section if needed.

Petoi is the maker of futuristic programmable robotic pets and the developer of OpenCat, the open-source quadruped robot platform. Its mission is to bring sophisticated, affordable, and cute robotic pets from fiction to reality.

Shipping Policy

Buyers are responsible for any duty tax and customs fees.

Return Policy

ORDER CANCELLATION: After you place an order, you have 5 hours to request an order cancellation. After 5 hours, your item(s) have either already been shipped, prepared to ship, or are currently being custom-made. It means we will not process your cancellation request after this period has passed. By placing your order, you signify that you agree to be bound by our Order Cancellation Policy.

PayPal and Stripe Service Fees: Please note both PayPal and Stripe do not offer a refund for the service fees they charge when you purchase a product. Therefore, after placing an order, if you change your mind and ask for a refund, we will deduct the service fee for PayPal or Stripe, whichever one you used to purchase. If you have any questions about this, please call PayPal or Stripe.

EXCHANGE POLICY: Oz Robotics wants you to be happy with your new purchase. However, we abide by the exchange policy of our suppliers because we do not manufacture these products; our suppliers do. Once you used the product, our supplier(s) and we have the right not to issue a refund. Still, we will offer an exchange for the wrongly purchased items or products with serious and irreversible defects or technical problem(s). The buyer will pay the shipping fee for wrongly purchased products or any other similar issues. If the product you purchased is defective, please email us at with some photos or a video of the defective parts to evaluate before you send it. Click HERE for more on Refund and Replacement Policy

REFUND POLICY: Oz Robotics accepts refunds on a minimal basis unless there is a manufacturing defect. For any electronic items, returns are only accepted on devices with serious and irreversible problems; meanwhile, the customer must apply for the returns within seven days from the delivery date. Before a refund acceptance, please include images or a video and any other material proof of the defect. However, we abide by the exchange policy of our suppliers because we do not manufacture these products; our suppliers do. For more info on Refund and Replacement Policy please visit Refund and Replacement Policy.

Other than our supplier’s default policy, once a return is agreed upon, you can ship your defective item to the provided return address that you should receive from us first. Please ship the order in original packaging with all the accessories and additional parts. If the Required Parts are not sent back, they will be billed for or expected to be shipped at a later stage. And only once all items have arrived will our staff check the returned product for testing. Include in your package a signed letter stating the reason for your return and the original receipt as well as any mentioned proof of defect, images, or a video, etc. It will help us to speed up the process on your behalf.

The purchaser (customer/buyer) is responsible for all shipping costs when returning an item. However, upon receiving the returned order, we will assess the product. If it is determined that there is, in fact, a manufacturing defect, then we will refund the shipping costs as well as repair or replace or refund the full amount to the purchaser if the product is not fixable.

If you wish to return an unused product, please do so within seven days from the ship date for a refund on the purchase price, minus shipping, handling. Refunds will be credited to the original credit card used for payment in 24-48 HOURS after receiving the product back. We will charge 50% restocking fee.

Once your return is received and inspected, and if agreed for a refund, refunds will be credited to the original credit card used for payment in 24-48 hours. Please note that we will charge a 50% restocking fee once you return a product without any defect.

Once your refund is processed, PayPal will return the money to the card used. It may take at least five business days (depending on the bank and credit company) before your refund is posted in your bank account and statements. Contact Us if you still have not received your refund after 5 business days.

Do not return your product to our New York office. For any exchange or refunds, please email us first at for us to provide you with the steps that need to be followed. Any product you return must be in the same condition you received and returned in the original packaging without being used. Please keep the original receipt. More on Refund and Replacement Policy.

Shipping costs

Country State Postcode Cost
China Any Any $5.00
Hong Kong Any Any $10.00
United States (US) Any Any $15.00
Any Any Any $30.00

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