1. Drag to change the position of the hair dryer.
2. When the output voltage exceeds 2V, the buzzer will sound.
3. Vin and Vout are assumed to be related as follows.
Vin < 1V, Vout = 6V
1V < Vin < 1.4V, Vout drops linearly from 6V to 0.2V
Vin > 1.4V, Vin = 0.2V