minirobo #2: How Robots Actually Move — The Metal Gear Servo (MG90S)

A robot is just a brain until something moves — and the easiest way to make something move is a tiny metal-gear servo that costs just a few dollars. In this minirobo episode we break down the hobby servo: what it is, the bare minimum you need to use it, where it came from, and everything I wish I knew when I started. -------------------------------------------------- Chapters 0:00 Intro — robots that move 1:03 What is a servo? 1:50 The bare minimum you need to know 3:16 History 5:05 What I wish I knew 7:54 Your 60-second challenge 8:23 Next time on minirobo -------------------------------------------------- Parts used (affiliate) MG90S metal-gear micro servo (9g) — https://amzn.to/4xeFcZg MG90S multipack (cheaper per servo) — https://amzn.to/3SREP7h ESP32-C3 SuperMini (the brain) — https://amzn.to/3RYS9qi 5V Step Up Power Module — https://amzn.to/3S9Spmr Breadboard Jumper Ribbon Cables - https://amzn.to/4uJeNQQ (As an affiliate I earn from qualifying purchases — costs you nothing, supports the channel ❤️) 📄 Free cheat sheet One page, the servo essentials — wires, power rules, and the safe-range trick. Download it on the episode page: https://minirobo.io New to minirobo? Subscribe — we cover one off-the-shelf part per episode and build real mini robots. Community Join the conversation right here on YouTube — drop your build in the comments below, and check the channel's Community tab for polls, photos, and behind-the-scenes. #robotics #3dprinting #minirobo #servo #mg90s #electronics #DIY