Abstract
This study aims to develop smart and safe bag that children use to go to school. This bag can provide information about the bag’s weight and the location of the user via text messages (SMS). The bag is designed using several main electronic devices, namely the microcontroller (Arduino Mega2560 board), the buck adjustable IC LM2956 module, the 5 Kg load cell sensor, the Neo 6M-V2 GPS module and the 800L-SIM module. From the test results, this bag system can measure the bag weight of up to 5 Kg with measurement accuracy reaching around 0.3 Kg; can read the user’s position with the accuracy of the GPS position reading reaching around 25 meters, and can provide bag weight information and user’s position through SMS communication. This bag is also capable of working for around 8 hours using a rechargeable Li-Po-3S 1400mAH battery.
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