PackAlert

Synopsis:

PackAlert is an alert system rigged through a backpack. It consists of an accelerometer+NFC Reader connected to another siren, all of which are woven throughout the body of the PackAlert. Using an NFC Reader, this system may be armed and disarmed conveniently and, once armed, when the accelerometer detects any significant motion or movement of the PackAlert from its resting place, will emit a piercing sound that will warn the user of any attempted theft or movement of the PackAlert by an unknown person. This mode can be disabled only by using the same NFC tag that armed the device, and will allow people to safely leave PackAlert unattended for short periods of time without needing someone else to watch over it.

Components:

• 3 LEDS

• 2 Buttons

• Various capacitors

• 2 LDOs (U3 switches 5V to 3.3V and U4 switches 5V to 12V

• Siren

• Mosfet

• ICM 42670-P accelerometer/gyroscope

• NFC Reader (MFR522)