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09 / 10 · Research · 2023
Banknote Authentication with Arduino
Project · Universitas Brawijaya
A low-cost tool that checks Indonesian Rupiah banknotes by measuring RGB colour intensity with LDR sensors.
The problem
Checking banknotes by eye is unreliable; the project explored a cheap, measurable alternative.
What I did
RGB light sources and LDR sensors turn colour intensity into voltages read by an Arduino Uno.
Readings are compared against reference values for genuine notes.
Outcome
A working prototype measuring voltage signatures per note.