Petoi Bittle robot dog has bite
By Rosemary Hattersley. Posted
Petoi Bittle, a Raspberry Pi-based robot dog that fits in the palm of an adult’s hand has caught the imagination of tech enthusiasts.
The teachable robot pet promotes STEM learning and reached its $50K Kickstarter fundraising goal. It went on to attract nearly ten times that amount in the subsequent month-long campaign period.
The tiny robot dog is its maker Petoi’s second such endeavour: earlier this year it started shipping the successfully crowdfunded Nybble, an open-source robot cat.
Robot pets have been around for more than a decade, but the extensible nature of the Petoi pets makes them ideal for learning how to control robots yourself. Petoi aims to bring down the cost of consumer robots.
At around $225 for the Bittle kit, it’s aimed at adult tech enthusiasts. Unlike robot toys marketed at children, Bittle is a quadruped with controllable legs. This makes it closer to a £1000+ Sony Aibo robot dog although the design nods to Boston Robotic’s industrial Spot robot.
Bittle has an Arduino controller board for the legs, while Raspberry Pi adds AI elements to the build such as image recognition and tracking. Bittle backers receive components of the robot dog and can share their pet’s exploits with others on a dedicated forum.
New dog; old tricks
As any Lego, Meccano, or train set designer will tell you, the enjoyment is in the construction at least as much as the finished article.
The pet robot will be modular and Petoi claims it takes around an hour to assemble. Its maker explains that the pet dog is assembled from a ‘puzzle-like frame’ with demo codes downloadable from a GitHub page. Bittle can go for a walk, avoid obstacles, and right himself if he falls down steps.
While teaching Petoi tricks will bring its own rewards, there will also be a competitive element. Owners can entertheir robot pet into a virtual dog show and demo the skills they’ve both learned.

Rosie has worked for consumer tech titles such as PC Advisor, Computeractive, CNET and Macworld and written For Dummies books on using iPads, Androids and tablets
Subscribe to Raspberry Pi Official Magazine
Save up to 37% off the cover price and get a FREE Raspberry Pi Pico 2 W with a subscription to Raspberry Pi Official Magazine.
More articles
MirrorBallBot
This trick uses no smoke but it does use mirrors
Read more →
Digital Displays in Raspberry Pi Official Magazine 170
Some projects seem more like magic to us than anything else; here’s one of them. This robot by Italian engineer/magician Andrea Favero uses a mirror to widen the field of vision of a Raspberry Pi Camera Module 3, the input from which is processed by Raspberry Pi 4 and used to control three legs to […]
Read more →
Win a Development Kit for Compute Module 5
Make CM5 development easier with our competition
Read more →