Dr. CockroachHere is test number 3. The transistor-less astable multi-vibrator cycling a transistor-less Nand gate.
Astable controlling a Nand gate
A project log for LIGHT LOGIC - HIC SVNT DRACONES
Using a LED/LDR pair to form inverting Photonic logic gates. The entire Boolean logic set handled by resistors and diodes! Who'd'a thunk
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