Heather, Zach and myself created four logic gates out of Legos scrounged from various Lego Technics vehicle model kits.
Here’s an AND gate made using strings:
00 position
01 position
10 position
11 position, output is activated
MOVIE!
Here’s an Inverter created with rods:
0 postion, 1 output
1 postion, 0 output
MOVIE!
We made another Inverter with levers:
0 position, 1 output
1 postion, 0 output
MOVIE!
This is an NAND gate using the differential gearing from one of the vehicles:
MOVIE!
This is a NAND gate created by chaining our inverter to the string AND gate:
