Display 7 Segments (2 Digits) whit SIEMENS-SDA2131

Code: Arduino.

shiftOut is currently written to output 1 byte (8 bits) so it requires a two step operation to output values larger than 255:

  digitalWrite(ENABLE, HIGH);
  shiftOut(DATA, CLOCK, LSBFIRST, numRight[i]);
  shiftOut(DATA, CLOCK, MSBFIRST, numLeft[x]);
  digitalWrite(ENABLE, LOW);

For more information:

https://www.arduino.cc/reference/es/language/functions/advanced-io/shiftout/

Recycling of an old TV