• Student: Vlad Găvan, ACES

Recently back pain in children seems to become increasingly more common. Although most of the times the problem is not a serious one and the cause can not be found, one of the most probable factors is the carrying of heavy backpacks. There exists a law in Romania that states that the backpacks the students carry should not weight more then 10% of their body weight.

This project aims to solve this problem alongside the more serious safety problem of children going missing. It uses an ESP32 Lolin32 development board alongside a GPS module to help track children's whereabouts. The data received by the GPS module is recorded in a Firebase database on a daily bases. Besides this, in order to help the heavy backpack problems, the system uses an RFID scanner with a buzzer. RFID tags can be sticked onto the books which allows them to be scanned whenever they enter the backpack. If a book is not present in the configuration set up inside the Arduino code. the buzzer will create a small sound.

The hardware components used to create the system mentioned above are the following:

• ESP32 LOLIN32
• RFID-RC522 scanner
• NEO-6M GPS Module
• Piezoelectric buzzer