Ep 383: QR Codes, Caving Gear, and the Old School Way to Learn Electronics
Summary
Hosts Elliot Williams and Tom Nardi announce a new Retrocomputing contest and discuss listener mail regarding cheap ultrasonic knives and adding video to the podcast. They review a hack using lasers to improve 3D print layer adhesion and another enabling 90-degree overhangs. The episode also covers reverse-engineering a smart grill’s ESP32 controller and an open-source caving surveying device.
Topics discussed
Intro and Retrocomputing Contest Ideas
Mailbag: Ultrasonic Knife Kits and Podcast Editing
Laser-Assisted 3D Printing and Peak Tech
Reverse Engineering a Smart Grill Controller
DIY Caving Surveying Device
PVC Garden Lights and LED Cooling
URL Compression and QR Code Data Storage
Radio Shack Electronics Learning Kits
Quick Hacks: Water Monitor and Doorbell
Over-the-Counter Hearing Aids and DSP
Motorola MC14500 Microcontroller History
Listen ad-free on Castria