Pocket Watch

Fall 2022

Wearable project developed for ENGR 1716: The Art of Hands-On System Design and Engineering

Pickpocketing plagues tourists around the world. Upwards of 400,000 pickpocketing incidents occur per day. Many tourists have had their phone, wallet, and other important items stolen in an instant. One of the only preventative measures today is simply knowledge. You must know common pickpocket locations, types of scams, or simply how to not look like a tourist.

To combat this pickpocketing epidemic, we designed Pocket Watch.

What does it do?

Pocket Watch alerts the user, via a buzzer, vibration and light, when contact from an intruder touches the conductive lining within the pocket.

Who is it for?

Pocket Watch is for anyone who wants to safe guard valuables in their pockets.

Flip the switch near the battery to arm the Pocket Watch, shown visually through an LED.

The pockets are lined with conductive fabric that are connected to the Bluefruit through conductive thread. When the conductive fabric is touched it will complete a circuit, tripping the alarm.

The following happens when the alarm is tripped:

  • Buzzer sounds alarm

  • NeoPixels shine red

  • Vibe Boards vibrate

The potentiometer controls the frequency of the buzzing.

After a trip, the Pocket Watch can be reset by the reset button.

How does it work?

Functional Diagram

Team Members: Tyler Hansen, George Spann, Dawson Winston, and Justin Zbikowski

Structural Diagram

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Early Bird Alarm