M-UNIT

bool SwitchF[8] = {true, true, true, true, true, true, false, false};
int SwitchState[8] = {0, 0, 0, 0, 0, 0, 0, 0};
bool BlinkF[8] = {false, false, false, false, true, true, false, false,};
int BlinkState[8] = {0, 0, 0, 0, 0, 0, 0, 0};
long BlinkTime[8];
int LastState[8];
int INPins[8] = {PD2,PD3,PD4,PB6,PB7,PD5,PD6,PD7};
int OUTPins[8] ={PB1,PB2,PC0,PC1,PC2,PC3,PC4,PC5};
long starttime = millis();

void setup() {
  for (int i = 0; i < 8; i++) {
    pinMode(INPins[i], INPUT);
    pinMode(OUTPins[i], OUTPUT);
  }

}

void loop() {
  starttime = millis();
  // put your main code here, to run repeatedly:
  for (int i = 0; i < 8; i++) {
    if (LastState[i] != digitalRead(INPins[i])) {
      LastState[i] = digitalRead(INPins[i]);
      if (SwitchF[i]) {
        if (LastState[i] == 0) {
          if (SwitchState[i] == 0)  {
            digitalWrite(OUTPins[i], HIGH);
            SwitchState[i] = 1;
            BlinkTime[i] = millis();
            if (BlinkF) BlinkState[i] = 1;
          } else {
            digitalWrite(OUTPins[i], LOW);
            SwitchState[i] = 0;
          }
        }
      } else {
        digitalWrite(OUTPins[i], LastState[i]);
      }
    }
    if (SwitchF[i]) {
      if (BlinkF[i]) {
        if (SwitchState[i] == 1) {

          if (millis() - BlinkTime[i] >= 400) {
            BlinkTime[i] = millis();
            if (BlinkState[i] == 1) {
              digitalWrite(OUTPins[i], LOW);
              BlinkState[i] = 0;
            } else {
              digitalWrite(OUTPins[i], HIGH);
              BlinkState[i] = 1;
            }
          }
        }
      }
    }


  }
}