This Repository contains the Schematics, Diagrams, Datasheets, and physical circuit images that demonstrate the incremental development of our ALU/Light Sensor.

Final Design Walkthrough

Timeline (Milestone 1 - Milestone 7)

M1: Transistor/Diode AND/OR Gates	M2: 4-Bit Adder Circuit	M3: 8-Bit Adder/Subtractor Circuit
M4: Wheatstone Bridge	M5: Op-Amp Integration	M6: ADC Integration

M7: Photoelectric Light

As of 05/12/2026, this repository contains the following:

Milestone 1: Transistor and Diode AND/OR Gates (8 LTSpice Schematics, 12 Phys. Circuit Photos)
Milestone 2: 4-Bit Adder (2 Explanation Videos, 3 LTSpice Schematics, 1 KiCad Schematic, 3 Phys. Circuit Photos)
Milestone 3: 8-Bit Adder/Subtractor (2 Explanation Videos, 2 Phys. Circuit Photos)
Milestone 4: Wheatstone Bridge (2 Explanation Videos, 3 LTSpice Schematics, 2 Phys. Circuit Photos, 1 Graph)
Milestone 5: Wheatstone + Op-Amp (2 Explanation Videos, 2 LTSpice Schematics, 2 Phys. Circuit Photos)
Milestone 6: Light Sensor + ADC (1 Explanation Video, 1 KiCad schematic, 1 Phys. Circuit Photo)
Milestone 7: Photoelectric Light (1 Explanation Video, 1 KiCad schematic, 4 Phys. Circuit Photo)