Build working computers out of marble runs! Build a new digital logic circuit each week using the GraviTrax marble run system.
source
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Build working computers out of marble runs! Build a new digital logic circuit each week using the GraviTrax marble run system.
source
Marble gifts your loved one will love (paid links): GRAVITRAX SETS โป GraviTrax Star Wars …
How does the track add? And why is it not made out of 2 xors, 2 ands, and one or?
Wow very nice Track ๐๐๐
Nice
๐๐ปcool