![Screenshot of youtube.com: The coolest robot I've ever built [video]](https://hn.urlbox.com/shots/renders/2023/11/7/1e43cd69-4fce-44ca-b5d5-5d46431d4caf.jpg)
The coolest robot I've ever built [video](youtube.com)
331 points by superasn | 137 comments
A YouTube video by Thomas Burns showing a homemade robot with animatronic eyes and a small CRT screen as its mouth.
![Screenshot of youtube.com: A clever “perpetual motion” device [video]](https://hn.urlbox.com/shots/renders/2023/9/14/568d52d6-4bc2-4552-a639-72698b21b70b.jpg)
First screen, captured .
Looks similar
![Screenshot of youtube.com: Feynman Sprinkler [video]](https://hn.urlbox.com/shots/renders/2024/1/15/55e31ac8-ce03-4e16-aedb-105cea19136a.jpg)
Feynman Sprinkler [video](youtube.com)
94 points by mhb | 16 comments
![Screenshot of youtube.com: Towards a “PCB Drone” – Making a PCB Motor which reaches 30k RPM [video]](https://hn.urlbox.com/shots/renders/2023/6/25/6c7043df-3dfe-4ff4-b1fb-2759f310c231.jpg)
Towards a “PCB Drone” – Making a PCB Motor which reaches 30k RPM [video](youtube.com)
333 points by reaperman | 60 comments
YouTube video by Carl Bugeja showing his efforts to make his tiny PCB motor stronger and faster, reaching 30,000 RPM.
![Screenshot of youtube.com: The Stern-Gerlach Experiment (1967) [video]](https://hn.urlbox.com/shots/renders/2023/11/8/ce63e3f0-61ee-4952-a864-ac4b95114497.jpg)
![Screenshot of youtube.com: Wintergatan Marble Machine (2016) [video]](https://hn.urlbox.com/shots/renders/2024/3/2/0cf07137-ba62-420b-bdfb-c81d446d49bb.jpg)
Wintergatan Marble Machine (2016) [video](youtube.com)
344 points by kaycebasques | 123 comments
YouTube video of Wintergatan's Marble Machine, a hand-cranked wooden music instrument that plays a song using 2000 marbles.
![Screenshot of youtube.com: The Brewintosh, a 3D Printed Full-Size Macintosh [video]](https://hn.urlbox.com/shots/renders/2024/3/18/1605873c-dddd-4529-98b5-b5f84a1786d6.jpg)