Note that here the decimal point (dp) option is not used, but included in the sketch. D13 of the Arduino is reserved for the decimal point segment. The 10K potentiometer is connected to the analog ...

10k pots are the defacto standard for Arduino imputs, with the wiper connected to the analogue input pin, one end connection to 0V and the other to +5V. As set up by the Ardunio IDE, the ADCs use the ...