Hackaday Podcast Ep 349: Clocks, AI, and a New 3D Printer Guy
Dec 12, 2025
This week, the hosts explore a fascinating range of hacks, including a typewriter that uses an ink pen and a unique illuminated reverse sundial that tracks the sun. They dive into the world of 3D printing, debating the merits of various printers, while also discussing Maya Posch's insights on the limitations of large language models compared to animal intelligence. A standout feature includes a volumetric display made from bubble-patterned glass, showcasing creative technological innovations.
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Episode notes
3D Printed Part Caused Plane Crash
- Elliot recounts a kit airplane crash caused by a 3D-printed air intake duct that melted and collapsed mid-flight.
- The pilot survived with minor injuries but the part was printed in the wrong material (PLA instead of ABS) causing failure when heated.
Check Material Properties Before Printing
- If you 3D print functional parts, know the material properties such as glass transition temperature before use.
- Avoid placing low-heat-resistant plastics like PLA in hot environments like engine bays or near exhausts.
SDR As A Universal Sensor Receiver
- An SDR plus decoding library can listen across many ISM bands and decode diverse devices with one dongle.
- Bridging rtl_433 to Home Assistant via MQTT makes oddball wireless sensors usable in home automation.