Hi Martin

The wiring shown for the digital clock in the manuals does not match the pins in the offered sketch nor the ones shown as picture in the manuals – that was a little pitfall =)

Manual:
const int SER = 7; // Shift Register Serial Data pin
const int CLK = 8; // Shift Register Clock pin
const int LAT = 9; // Shift Register Latch pin
const int OE = 10; // Shift Register Output Enable pin

Manual Picture:
SER = 3
CLK = 4
Lat = 5

Sketch:
//DIGITISER Stuff

const int OE = 9;
const int SER = 10;
const int CLK = 11;
const int LATCH = 12;

const int sw1 = A2;
const int sw2 = A1;
const int Pot = A0;

Regards

Jean-Luc