Perancangan Detektor Nominal Uang Kertas Menggunakan Sensor TCS34725 Berbasis Mikrokontroler untuk Warga Tunanetra

Abstract

Money is a tool used as a payment for everything, a means of exchange, a means of measuring value and a means of hoarding wealth. One of the people who find it difficult to identify money is the blind. Generally, people with visual impairments arrange the money they have by backing up the nominal or putting a special mark around the money so that they can identify the nominal of the money. It is very important to know the nominal value of paper money so that no one is deceived by irresponsible people when transacting. A paper money detection device has been designed and implemented for blind citizens that can detect the nominal value of paper money. To be able to detect paper money, the ATmega328 microcontroller is designed to program data that is converted into voice signals. During the process of collecting papermoney samples, the sensor is only placed around the center of the paper money. The data that will be taken by the sensor is red-green-blue (RGB) data. The number that appears the most when data is collected from paper money will be concluded with the minimum and maximum data. The correct data will be sent to the ATmega328 microcontroller to convert the data into sound. With an MP3-TF-16P sound module that functions to play a preset sound for each type of banknote nominal. When the push button is pressed, the sensor will read the RGB color of the detected paper money and will emit a sound coming from the speaker stating the nominal value of the detected paper money. The sensor that can read the RGB color of each money is the TCS34725 sensor.