Nail Biting Sensor Help!...

Projects General Guidance
1

Hello,

I am trying to understand which exact Arduino I should use... my requirements are simple, I need two parts basically.

  1. A tiny sensor with buzzer to put on the collar of the shirt. (smallest possible...)
  2. A (magnetic?) part to wear on the finger. like a ring...

whenever the ring part is coming close to the collar part, the buzzer should go off...

so that if a person doen't notice that if he is biting his nails / pulling hair from his heard / touching the face often. the buzzer should pull his attention.

is this possible at all? which kit / sensor / parts do I need to accomplish this.

Thanks in advance...

2

3

Sounds like you could do everything with a arduino Uno, a buzzer, and a hall effect sensor. Although, there would probably be wires everywhere.

4

I would suggest making it vibrate rather than beep. Use an Arduino GEMMA or the FLORA and the hall effect sensor. You'll need a ring with a rare earth magnet in it too.

5

The only problem I can see with hall effect is proximity, dependent on strength of magnet you may have to get within a few centimeters of the sensor to trigger it. A magnetometer might be more suited as the sensitivity is greater...

Perhaps an NFC ring and suitable sensor?