int start=12;
int powerread;
int ds=1000;//1s solenoid activation
int ds30=1000;//30 minute delay
int ds15=1000;//15 minute delay
int ds10=1000;//10 minute delay

void setup() {
  // put your setup code here, to run once:
pinMode(start,INPUT);
pinMode(1,OUTPUT);
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
}
void loop() {
  // put your main code here, to run repeatedly:
while(digitalRead(12)==0){}
//Do nothing
delay(1000);
digitalWrite (1,1); //activate solenoid
delay(ds); // delay 1 second
digitalWrite(1, 0); //deactivate
delay(ds30); //delay 30 minutes
digitalWrite (2,1); //activate solenoid
delay(ds); // delay 1 second
digitalWrite(2, 0); //deactivate
delay(ds15); //delay 15 minutes
digitalWrite (3,1); //activate solenoid
delay(ds); // delay 1 second
digitalWrite(3, 0); //deactivate
delay(ds10); //delay 10 minutes
digitalWrite (4,1); //activate solenoid
delay(ds); // delay 1 second
digitalWrite(4, 0); //deactivate
}