Wiring
Printed Circuit Board (PCB) with modules, connection sockets and terminal blocks
![Printed Circuit Board (PCB) with modules, connection sockets and terminal blocks](wiring-1.jpg)
Potentiometers connected to the PCB
Arduino = blue
![Potentiometers connected to the PCB](wiring-2.png)
Switches and buttons connected to the PCB
Arduino = blue
![Switches and buttons connected to the PCB](wiring-3.png)
Displays, RTC, FRAM connected to the PCB
Arduino = blue
![Displays, RTC, FRAM connected to the PCB](wiring-4.png)
DFPlayer, relay, speaker connected to the PCB
Arduino = blue, Terminal blocks = green, Speaker = yellow, DFPlayer = purple
![DFPlayer, relay, speaker connected to the PCB](wiring-5.png)