Wiring

1. load battery:
  1x LED bar = 2 pins
  microphone = 1 pin
2. Mealy:
  2x switch = 2 pins
  shift register = 3 pins
3. Pressure:
  3x LED bar = 8 pins
  3x pressure sensors = 3 pins
4. Theremin:
  ultraSonic = 2 pins
  loudspeaker = 2 pins
5. defuse bomb
  10x cable = 10 pins
  10x led --> led driver = 2 pins
lcd display = 7 pins (or 11?)
help button = 1 pin (or 2?)
7 segment = 12 pins (or 16?) --> 2 (or3?)

total: 51 pins (or 60?)

## esp32 1 (master)
| number of pins  | Task  | used pin numbers |
|--------|--------|--------|
| 1 | help button  | 4 |
| 8 | 4x led bar | 9,10,14,19,23,27,32,33, |
| 3 | 3x pressure sensors | 34,35,38 |
| 2 | ultrasonic | 5,18 |
| 1 | loudspeaker | 2 |
| 2 | 2x switch | 25,26 |
| 3 | shift register | 12,13,15 |
| 1 | microphone | 37 |
= 21 pins

## esp32 2 (slave1)
| number of pins  | Task  | used pin numbers |
|--------|--------|--------|
| 3 | 7 segment + 2x led driver  | 21,22 |
| 7 | lcd display  | 5,9,10,18,19,23 |
| 10 | bomb defuse (10x cable) | 25,26,32,33,27|
= 10 pins