Fun DIY

Here's a few projects that look fun or useful from this week:

Hackaday Extols the joys of using ARM processors
32bit all the things

3d Printed Multimeter stand improves usefulness on the bench

Radial Solenoid Engine Made with Hand Tools, Including the solenoids
This is a no shortcuts kind of build, such a sweet result though!

Homemade Laser

Homemade Ultraviolet Lasers
Found on Make: and Hackaday 

Who knew lasers were so easy to build?..

I remember reading How the Laser Happened recently.
In it Charles Townes said it was amazing no one figured out just the right mix of known physics and conditions to make a laser 30yrs before him. (if I still had the book that would be a direct quote).