Here is the new UX after collecting feedbacks:

UX UPDATED :

1- Attach the badge to clothing with a square magnet.

2- Sit with good posture.

3- Tap to wake up the board that is in deep sleep mode and it set currentAngle as targetAngle at the same time.

4- Do math to compute badAngle.

5- Compare currentAngle to set badAngle value.

6- Buzzer playing nice alert sound (PCM audio) if badAngle is reached