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Hand Tracker

Hardware

By @javin_wittig

  • 3 Devlogs
  • 15 Total hours

I am building a device that tracks my hand movement and translates it to a paper hand mounted on two servo motors. In the future, I plan to work on much more advanced projects, like a laser pointer.

Source
Ship #1 Pending review

@javin_wittig on Hand Tracker

I built a real-time Hand Tracker using a Raspberry Pi 4, two servo motors, and MediaPipe! It tracks my hand movement live through a camera and mimics it using a physical paper hand mounted on two servos.

The biggest challenge:
Running MediaPipe directly on the Pi 4 overheated it fast. To fix this, I now run MediaPipe on my PC. Now, the Pi streams the video feed to my PC, which calculates the coordinates and sends them back to the Rasperry PI,which then controls the two servos to mimic my hands movement.

What I’m proud of:
Solving the overheating issue using network streaming and seeing the mechanical hand follow my movements live! I also built a website:https://javinwittig.github.io/hand_tracker_website/

I made 3 Github Repos, one for the Rasperry PI, one for the backend on my PC, where MediaPipe is running and another for the website, which I hosted using Github Pages

  • 3 devlogs
  • 15h build
Video of Project → See source code →
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@javin_wittig on Hand Tracker

7h 42m 59s logged

I’m building a laser turret with a Raspberry Pi, two servo motors, a laser pointer, and a camera that tracks my hand movement live and steers the laser accordingly. The Pi is already set up (Python/VS Code), but since local MediaPipe tracking overheats the Pi 4 too much, I’ve decided to offload the tracking to my PC with an RTX 5070 — the Pi just streams the camera feed to the PC, which sends back target coordinates for the Pi to steer the servos. I’m also keeping a local website with a live video stream

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