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SpotMicroAI: Building My First Robot Dog

Hello!

I’m starting this blog with a dream I’ve been putting off for a while: building my own four-legged robot — SpotMicroAI. If you’ve ever been fascinated by Boston Dynamics and their robot dogs, you’ll definitely understand my motivation. Essentially, SpotMicroAI is an open-source project inspired by SpotMini, and any enthusiast can replicate it at home. So, I decided to give it a go!

What is SpotMicroAI?

SpotMicroAI is a DIY platform (do-it-yourself) that combines 3D-printed parts, servos, and affordable electronics to build a functional robot dog.

It can:

  • Walk (and with proper tuning, walk quite smoothly)
  • Balance and react to tilt
  • See and analyze (with the addition of a camera and AI)
  • Be controlled remotely

Moreover, the project is actively developed by the community on the official website, and I will provide a step-by-step guide on the assembly and setup process in this blog.

Why did I decide to build it?

I’ve always been passionate about robotics, and I’m really into this field.

I have some experience with 3D printing, electronics, and programming, but this project is a great opportunity to take my skills to the next level.

I’m building it for myself as a hobby, but I also want to learn something new — especially working with artificial intelligence and computer vision (AI and CV).

What’s been done so far?

So far, I’ve printed all the necessary parts.

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And assembled the main electronics:

  • 📌 Raspberry Pi 3 — the main controller (for now, I’ll upgrade to a Raspberry Pi 5 later)
  • ⚙️ MG996R servos (12 pieces)
  • 💡 PCA9685 — for controlling all the servos
  • 🔋 Lithium 18650 3S batteries with a BMS board
  • 🔻 Step-Down 5V converter — to power the Raspberry Pi
  • 🧰 And a bunch of small things: screws, nuts, wires, capacitors
Raspberry Pi MG996R PCA9685 18650 3S

Next, I’ll start assembling the body and connecting everything together. I’ll be sharing the process step-by-step in future posts.

What’s this blog about?

This blog will be useful for:

  • Beginners who want to build SpotMicroAI
  • DIY enthusiasts, 3D printing lovers, and Raspberry Pi fans
  • People interested in robotics but not sure where to start
  • And anyone who enjoys following interesting tech projects

In each post, I’ll share my experiences, photos, useful links, mistakes, and lessons learned.

A quick note:

Everything I publish here is purely my personal experience.
I’m not a professional, and I’m not trying to be a teacher. I’m learning, experimenting, and just sharing my steps and observations with anyone who might find it interesting or helpful.

The methods and approaches I describe are not necessarily the “right” or only way to do things. Please take the information as an overview of my journey, not as a strict guide.

If you have ideas, advice, or want to share your own experience, I’d be happy to chat in the comments!

Let’s stay in touch! Follow me:

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