Mini Pupper 2 is a palm-sized quadrupedal robotic dog that is the culmination of the latest advances in robotics. While inheriting the concept of its predecessor, “Mini Pupper,” which was a huge hit around the world, its internal structure has undergone a dramatic evolution.
Product Overview
The main controller is the Raspberry Pi Compute Module 4 (CM4), which packs a desktop PC-like processing power into this small body.
The most important feature is its deep affinity with the latest AI technology, ChatGPT (Generative AI). Rather than simply repeating programmed actions, ChatGPT now understands the user’s words via the cloud and can express emotions, interact, and choose actions based on the user’s intentions.
In addition, 12 independent serial servo motors reproduce the supple and complex movements of an animal. This open source robot meets a wide range of needs, from programming learning in educational settings to R&D prototypes for engineers.
Summary of key points
What is Mini Pupper 2?
- ChatGPT linked intelligence: Natural language processing provides an experience like interacting with a real pet, from everyday conversations to complex commands.
- ROS2 fully compliant platform: Fully compatible with the world standard robot OS “ROS2 Humble/Foxy”. Professional-level algorithm development is possible.
- Advanced hardware feedback: Real-time acquisition of “position, speed, torque, and temperature” data from all 12 motors. Accuracy of obstacle detection and self-diagnosis is dramatically improved.
- Advanced visual information: SLAM (self-location estimation) and hand gesture recognition can be realized by attaching the optional OAK-D-Lite (3D AI camera).
good point
- Unparalleled extensibility and freedom: In addition to control in Python and C++, you can add your own functions using the rich resources available on GitHub.
- Authentic mechanical design: Lightweight and highly rigid carbon fiber frame. Precisely formed beauty that will make any mechanical enthusiast gasp.
- Global community: Developers around the world exchange information on Slack, Discord, and GitHub, facilitating troubleshooting and the introduction of new features.
points of concern
- Battery stamina: Due to the high-load processing, continuous operation with the built-in battery is about 30-50 minutes. For longer experiments, an external power supply should be devised.
- Proficiency in the build process: Assembly of the DIY version requires knowledge of “electronic construction,” which is one step more advanced than “plastic models. In particular, careful cable management is required.
- Hurdles in environment construction: A certain level of IT literacy, such as Linux (Ubuntu) operation and API settings, is essential for ChatGPT linkage and full use of ROS2.
Users who may be suitable for
- Next generation engineers and students: the best cost-effective material for those who want to learn ROS2, SLAM, and AI control on real machines.
- AI gadget enthusiasts: those who want ChatGPT to have a physical “body” to move around, not just on the screen.
- Hardware hackers: those who want to build their own exterior with a 3D printer or add sensors to create the “best robot dog”.
rough conclusion
It is “one of the world’s smallest educational supercomputers, covering everything from the basics of robotics to the application of AI coordination, converting the user’s creativity into physical movement.
Frequently Asked Questions (FAQ)
Can a complete beginner assemble it?
The DIY version is centered on screwing without soldering, but includes precision wiring work. The manufacturer provides a detailed Japanese-language manual and video guide, and even beginners can complete the project if they follow the instructions. However, there are some processes that require concentration, such as the orientation of the 12 servo motors and ID settings, so it is ideal to take your time and work on it over a period of two to three days. If you are uncertain, we strongly recommend that you choose the “completed version,” which is assembled from the beginning.
What is the price?
Pre-sales on Makuake are currently underway, with the DIY version (complete kit) starting at 65,900 yen (including tax) and the planned general sales price at 109,116 yen (including tax). The pre-assembled complete version will cost approximately 148,000 yen for the general sales price. The price range is higher than its predecessor due to the high-performance Raspberry Pi CM4 and 12 advanced servo motors.
Is there a monthly fee to use the ChatGPT feature?
Mini Pupper 2 itself does not have a monthly fee, but since it uses the ChatGPT (OpenAI) API, there is a separate API fee for OpenAI. Since it is a pay-as-you-go system, a small fee (several hundred yen per month or so) is required for general conversations, but please note that you will need to acquire an API key and register a credit card.
Will you respond if I speak to you in Japanese?
Yes, it can be configured to understand questions in Japanese and respond in Japanese through the ChatGPT integration function. However, depending on the default text-to-speech or speech recognition engine, some settings may need to be adjusted. Because of its open source nature, the Japanese community is sharing its expertise in Japanese language adaptation.
Can I let my pet (dog or cat) play with me indoors?
Caution is advised: Mini Pupper 2 is made of metal parts and carbon and is agile in its movements. If the pet bites or, conversely, the robot bumps into the pet, there is a risk of injury or malfunction to both parties. Basically, it is recommended that the robot be operated on a desk, in an area free from pets, or under adequate supervision.
What about repair support in the event of a malfunction?
Because of its aspect as an open source project, it is difficult to expect generous support such as “same-day pickup and repair” like that of common consumer electronics products. However, you can consult with MangDang’s official website, official Discord, GitHub, etc., to purchase individual parts and troubleshoot problems. Basically, MangDang is suited for those who enjoy “self-maintenance” by replacing and fixing parts by themselves.
Summary of specification details
| (data) item | Detailed specifications | remarks |
| Size | Approx. 210 × 110 × 165 mm | Compact, fits into A5 size |
| weight | Approx. 500g – 600g | Variable with on-board cameras and sensors |
| processor | Raspberry Pi CM4 (4GB RAM recommended) | Quad-core for advanced parallel processing |
| motor | 12-axis high-performance serial servo | Supports FB of position, velocity, and torque |
| battery | 7.4V / 1000mAh Li-ion | Charging via USB-C is possible |
| OS | Ubuntu 22.04 LTS / ROS2 Humble | Industry standard software environment |
| Sensor Extension | LiDAR, 3D camera, microphone array, etc. | Expandable with a variety of external ports |
| Manufacturer | MangDang Technology | Hong Kong-based robotics company |
In-depth reviews and word-of-mouth
Rave reviews from users.
I owned the previous generation (V1), but the V2 is a completely different animal. Thanks to the ability to control the torque of the motor, the foot landing when walking has become very soft and quiet. Especially since the introduction of the ChatGPT Linkage Kit, it has become like a “family member” that greets me in the morning and tells me the weather. As a developer, I am very grateful to have ROS2 Humble running natively.” – Source: Kickstarter – Backer Review Section
I put a 3D camera (OAK-D-Lite) on it and tried SLAM driving. The documentation on GitHub is very detailed, and anyone who knows Python can create their own AI pet. It reminded me again how great the power of open source is.”
– Source: Reddit – r/Robotics: My 2 months with Mini Pupper 2
Improvement requests and real concerns
The Raspberry Pi CM4 generates a fair amount of heat due to its good performance. When running it for long periods of time in a small room during the summer, the fan will be running at full power, which can be a bit noisy. Also, the battery life is short, enough for about 30 minutes of experimentation, but if you want to keep it running autonomously, you’ll need to customize it with an automatic charging station.”
I bought the DIY version. Assembling a carbon frame is fun, but there are many types of screws, and if you make a mistake, you will have a hard time later. It is strongly recommended to prepare your own screw sorting tray. Also, the servo cables are very thin, so you need to be very careful not to get them caught in the frame.” – Source: GitHub Discussions – Build Guide Feedback
Overall assessment: The “smallest” tool for creating the future
Mini Pupper 2 is more than just a moving toy. It is the ultimate platform for learning the most important technologies of our time: Robotics, AI, and Edge Computing at the same time.
On the official website ( mangdang.org ), many research-level demonstrations are available, including full-scale autonomous driving using LiDAR and motion detection using OpenCV. It is extremely significant that what could previously only be verified with large robots costing several million yen can now be done with a desk-sized robot costing less than 100,000 yen.
Comparison with “Mia,” a talking cat-shaped robot
There are two directions in living with a robot: “enjoy development” and “enjoy emotional interaction.
| Comparison items | Mini Pupper 2 | Mia |
| Appearance and Design | High-tech mechanical. Cyber-like form with visible internal structure. | Soft and adorable. Cat-shaped design that fits in with your interior. |
| Main Functions | Walking, SLAM, and AI control. Complex actions can be programmed. | Talking and dialect dialogue. 100+ expressions and dialects of 47 prefectures. |
| setup | For intermediate to advanced users, including assembly and OS settings. | For beginners who just need to turn on the power to get started. |
| maintenance | Replace parts by yourself in case of malfunction. You must have an attitude to enjoy hacking. | A safe pet experience that assumes support by the manufacturer. |
| Optimal location | Replace parts by yourself in case of a malfunction. You must have an attitude to enjoy hacking. | Living room, bedside, dining table. |
| Price | Laboratory desk, PC area, and garage. | From 9,800 yen (tax included) |
Key points of comparison: Mia emphasizes “warmth that accompanies daily life. With its unique Japanese dialect of speech and affordable price of less than 10,000 yen, it is a suitable choice for those who want to easily incorporate everyday healing and familiarity into their daily lives.
👇 Talking cat-shaped robot “Mia” that speaks 47 dialects nationwide
summary
Mini Pupper 2 is a device that allows your “intellectual curiosity” to take shape.
- If you are a developer: Wield the ROS2 environment on an actual machine and explore its potential as an AI agent.
- If you are an educator, teach children the difficulty and fun of controlling “physically moving objects”.
- If you’re a gadget fan, revel in the pleasure of owning a state-of-the-art ChatGPT-connected robot.
You assemble it with your own hands, write the code, and bring it to life. That process itself is the greatest value that the Mini Pupper 2 offers.
Mini Pupper 2 official website (MangDang)
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