Answer · checked 7 Nov 2026
Open-source robot dog kits you can build
SHORT ANSWER
The Petoi Bittle X V2 construction kit is $319 and in stock at RobotShop, with MIT-licensed OpenCat software. Stanford Pupper v3 is about $2,000 to build from its open parts list. Solo 12 and SpotMicro are plans you build yourself. Prices checked 7 Nov 2026.
Five open quadrupeds
| Dog | Price | What is open |
|---|---|---|
| Petoi Bittle X V2 in stock at RobotShop, checked 5 Nov 2026 | $319 kit | OpenCat framework, MIT. RobotShop |
| Stanford Pupper v3 12 DoF, 3 kg, Raspberry Pi 5 | about $2,000 DIY | Everything open, monorepo GPL-3.0. Project docs |
| Open Dynamic Robot Initiative Solo 12 about 2.8 kg, 12 DoF | no price listed | Mechanics and electronics, BSD-3-Clause. Repository |
| SpotMicro (mike4192) 12 servos, Raspberry Pi 3B | parts list only | ROS software, MIT. Repo last updated March 2021. Repository |
| Mini Pupper (MangDang) | see seller | Repository Apache-2.0. MangDang |
None of these are on our daily price check yet. If you want a walking robot that is, look at Microduck, a 15-motor biped.
People also ask
Which dog is the easiest to build?
Petoi lists its Bittle X construction kit as assembled in about 60 minutes.
Which is fully open source?
Stanford Pupper v3 states that everything is open source, and Solo 12 publishes its mechanics and electronics under BSD-3-Clause.
Get the Microduck when it is in stock and cheaper
One email when a seller restocks or the price drops. Confirm once, unsubscribe in one click.