This week, Hackaday’s Elliot Williams and Kristina Panos met up over the international tubes to bring you the latest news, mystery sound results show, and of course, a big bunch of hacks from the previous seven days or so.

Regarding Hackaday Europe, we announced the last round of speakers and opened up the workshop ticket sales. In other news, the Green-Powered Challenge has wrapped, and judging will begin quite soon.

On What’s That Sound, we can score another one for Kristina, which brings her record to approximately four wins and sixty-eight losses. She knew without a doubt that this was a guillotine paper cutter, probably because she recorded the sound herself. Hey, don’t take this away from her.

After that, it’s on to the hacks, beginning with a really cool laser-powered mist-and-mirrors multi-view display, a robotic drawing assistant of questionable utility, and a new slicer that enables horizontal overhangs without supports.

We also look at a trackball 3D controller, a 3D-printed pinball machine, and a good way to kill humidity sensors with humidity. Finally, we’re both shocked to learn that we’ve been on GPS mk. II for some time now. But then once we get over that, we talk tablets and their usefulness, or lack thereof.

Check out the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

[podcast go here]

Download in DRM-free MP3 and savor at your leisure.

Where to Follow Hackaday Podcast

Places to follow Hackaday podcasts:

• iTunes
• Spotify
• Stitcher
• RSS
• YouTube
• Check out our Libsyn landing page

Episode 368 Show Notes:

News:

• Hackaday Europe: Last Round Of Speakers, Workshops

What’s that Sound?

• Congrats to [Primary Schoolteacher’s Best Friend After Laminator], who knew this was a classic guillotine paper cutter.

Interesting Hacks of the Week:

• Mist, Mirrors, Laser : Multi-view 3D Projection
  
  • Volumetric Display With Lasers And Bubbly Glass

  
  

• PenPal, A Robotic Drawing Assistant
• New Slicer Enables Horizontal Overhangs Without Support
  
  • Arc Overhangs Make “Impossible” 3D Prints

  
  

• Payphone Tag Is Australia’s New National Sport
• A Trackball 3D Controller
  
  • A Simple 6DOF Hall Effect ‘Space’ Mouse
  • A DIY CAD Mouse You Can Actually Build
  • Old 3D CAD Mouse Gets New Lease Of Life
  • SpaceMouse Destroyed For Science

  
  

• Can You 3D Print A Pinball Machine That’s Fun To Play?

Quick Hacks:

• Elliot’s Picks:
  
  • A Guide To CubeSat Mission And Bus Design
  • How To Kill Humidity Sensors With Humidity
  • Digital Signal Processing On The Pi Pico

  
  

• Kristina’s Picks:
  
  • Audio-Forward Case Mod Of Classic 90s Portable TV
  • Time Frog Color Is A Game Boy Color On Your Wrist
  • The Challenges Of 3D Printing Reliable Springs

  
  

Can’t-Miss Articles:

• The GPS III Rollout Is Almost Complete, But What Is It?
• Ask Hackaday: Do You Need A Tablet?

hackaday.com/2026/05/01/hackad…