добрый день. 
собираю часики adm503poty и такая ошибка при прошивки ардуино нано выскакивает. помогите с решением.
C:\Users\mr.Green\Desktop\NixieClock-master\NixieClock-master\firmware\NixieClock_PE_v2.1.0\0_data.ino:35:16: error: 'BTN_NO_PIN' was not declared in this scope
 GButton btnSet(BTN_NO_PIN, LOW_PULL, NORM_OPEN);  // инициализируем кнопку Set ("М")
                ^~~~~~~~~~
C:\Users\mr.Green\Desktop\NixieClock-master\NixieClock-master\firmware\NixieClock_PE_v2.1.0\0_data.ino:35:16: note: suggested alternative: 'NOT_A_PIN'
 GButton btnSet(BTN_NO_PIN, LOW_PULL, NORM_OPEN);  // инициализируем кнопку Set ("М")
                ^~~~~~~~~~
                NOT_A_PIN
C:\Users\mr.Green\Desktop\NixieClock-master\NixieClock-master\firmware\NixieClock_PE_v2.1.0\0_data.ino:36:14: error: 'BTN_NO_PIN' was not declared in this scope
 GButton btnL(BTN_NO_PIN, LOW_PULL, NORM_OPEN);    // инициализируем кнопку Down (Left) ("минус")
              ^~~~~~~~~~
C:\Users\mr.Green\Desktop\NixieClock-master\NixieClock-master\firmware\NixieClock_PE_v2.1.0\0_data.ino:36:14: note: suggested alternative: 'NOT_A_PIN'
 GButton btnL(BTN_NO_PIN, LOW_PULL, NORM_OPEN);    // инициализируем кнопку Down (Left) ("минус")
              ^~~~~~~~~~
              NOT_A_PIN
C:\Users\mr.Green\Desktop\NixieClock-master\NixieClock-master\firmware\NixieClock_PE_v2.1.0\0_data.ino:37:14: error: 'BTN_NO_PIN' was not declared in this scope
 GButton btnR(BTN_NO_PIN, LOW_PULL, NORM_OPEN);    // инициализируем кнопку Up (Right) ("плюс")
              ^~~~~~~~~~
C:\Users\mr.Green\Desktop\NixieClock-master\NixieClock-master\firmware\NixieClock_PE_v2.1.0\0_data.ino:37:14: note: suggested alternative: 'NOT_A_PIN'
 GButton btnR(BTN_NO_PIN, LOW_PULL, NORM_OPEN);    // инициализируем кнопку Up (Right) ("плюс")
              ^~~~~~~~~~
              NOT_A_PIN
exit status 1
Compilation error: 'BTN_NO_PIN' was not declared in this scope