Mani Thundiyil
Published © GPL3+

GT_FFP: Face fingering prevention

The design is a tiny gadget attached to face masks that alert with a warning beep sound when the user's hand moves towards his face

IntermediateProtip3 hours247
GT_FFP: Face fingering prevention

Things used in this project

Hardware components

PIC16F
Microchip PIC16F
PIC16LF15313
×1
AARP Innovation Labs AK9754 PIR Human detection chip
AK9754
×1
Through Hole Resistor, 4.7 kohm
Through Hole Resistor, 4.7 kohm
×3
Capacitor 100 nF
Capacitor 100 nF
×1
Male-Header 5 Position- 1 Row- Long (0.1")
Male-Header 5 Position- 1 Row- Long (0.1")
×1

Software apps and online services

MIcrochip MPLABX and XC8 Compiler

Story

Read more

Custom parts and enclosures

Enclosure

This is the enclosure design. This can be used to make the mold for the product

Schematics

Schematic of GT_FFP

The image shows the schematic of the Face fingering preventer. It consists a PIR human sensor, an 8 pin microcontroller and a piezo buzzer powered by a 3 V coin cell. On power up the Microcontroller configures the PIR sensor to interrupt the microcontroller when the users hand is unknowingly moved close to the perosn wearing the device. The interrupt routine generates a beep sound to alert the user and on hearing the he will be able to withdaw his hand to prevent touching his face.
Average current drawn by the circuit is less than 100 micro amperes. A single coin cell will last for more thn 1000 hours of operation.

Credits

Mani Thundiyil
1 project • 1 follower
Thanks to Suresh Nair.

Comments