Patented Hand-Held Currency Reader

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Battery-operated currency reader. Based around a low-cost color sensor and a TI MSP430 microcontroller. The unit uses UV LEDs to cause the security thread in US currency to fluoresce. Using a color sensor and a patented algorithm, the micro detects the color of this thread and determines the value of the currency ($5 is blue strip, $20 is green strip, etc.). Using a high-speed DAC and an audio amplifier, the unit speaks the pre-recorded value of the currency in different languages.