I share the story of how I built a 19bit marble computer.

Along the way we'll learn a bit about digital logic, binary numbers, reliability, and engineering.

* Buy GraviTrax on Amazon: https://amzn.to/3xXIZNS (paid link)

* My FREE Homeschool Digital Logic Course, where we build GraviTrax marble runs together to learn how computers and other chipbased electronics work on the inside:
   • Digital Logic with Marbles  

* GraviTrax binary number landing pad inserts for 3D printers to make your own GraviTrax marble computers on Thingiverse:
https://www.thingiverse.com/thing:492...

* GraviTrax landing pad catchers for 3D printers also used on this marble computer: https://www.thingiverse.com/thing:492...

Link to GraviTrax Dipper Switch trick video, which could become the basis for storing nonvolatile memory in GraviTrax digital computers.
   • GRAVITRAX TRICKS: AutoSwitch Dipper  

CREDITS:

Andreas Schleifenbaum’s original full adder using 2 switches:
   • GraviCalc  

Water vector created by upklyak:
https://www.freepik.com/vextors/water

CHAPTER MARKERS:

00:00 A Computer Made of MARBLES?
01:29 History of Marble Computers
05:00 Failure upon Failure (The Engineering Process)
08:12 The Real Problem (Reliability)
09:03 The Analogy to Evolution
09:58 Drastic Action
10:49 What's Ahead
13:28 Basic Overview
17:06 Running the Computer
22:10 Q&A


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