VOI - Voice of Indonesia | RRI - Radio Republik Indonesia

Crime is now rampant. Crimes, such as theft, pickpocketing, and robbery often target wallets by exploiting the carelessness of their owners. Therefore, students of Yogyakarta State University (UNY) create a wallet equipped with a security system that will provide information to the owner, if the wallet is more than 10 meters apart from its owner. Uniquely, the wallet is made of banana midrib fiber which is given a Javanese letter motif.

The students make Smart Wallets or Dompi. The materials needed are Bluetooth HC-05 Module, Arduino UNO, PCB, connecting cable, capacitor, buzzer, resistor, lithium battery, tin soldier, charger pin, and push button. Meanwhile, the tools needed are a soldering iron, IDEA Software, Arduino Application, and Bluetooth Simple. To assemble it, the material is assembled on the PCB, then set the programming code on the IDEA application and wraps the sensor in a box to make it safe, and neatly visible. The sensor on the wallet will inform if it is 10 meters away from the owner's device by sounding like a siren. This sensor is connected to the device via Bluetooth and the owner just needs to track the whereabouts of the wallet through the device.  

This product is created as a creative effort to preserve culture and promote local culture. They use banana stems because so far, it has only become waste and polluted the environment. In addition, to raise public interest, they make wallets with Javanese script patterns to introduce the nation's culture as well as to improve knowledge of Javanese script, where Javanese script is increasingly rare in existence. They also added a science motif to attract the attention of scientists, to educate the public, and to add to the unique value of the innovative wallet. This work won funds from the Directorate of Learning and Student Affairs of the Ministry of Education, Culture, Research and Technology in the Student Creativity Program in the field of Entrepreneurship in 2021.