# I built animatronic eyes with an Arduino UNO and a browser block-coding app for install-free programming

- Source: Reddit r/robotics
- Published: 2026-10-15T07:53:50.000Z
- RoboHot: https://robohot.news/en/items/f3d7dyvjra9h2o87i59w0mlt7
- Original: https://www.reddit.com/r/robotics/comments/1x6fmgr/i_built_animatronic_eyes_and_a_browser_app_to/

## Summary

An automation control and robotics engineering student built a pair of animatronic eyes using two servos (left-right and up-down), a 3D-printed frame, and an Arduino UNO. He developed a web app offering Spanish Scratch-style block programming, a simulator to preview movements before connecting, and direct USB program upload through the browser (Chrome or Edge); each block also shows its corresponding C++ code and can be downloaded as an .ino file.