Plant watering system (without relay)

1int moisture_sensor = A0; // moisture sensor connected to analog pin A0
2int  moisture_level ;
3
4void setup() {
5   pinMode(4,OUTPUT);
6   Serial.begin(9600);
7   Serial.println("Getting sensor reading");
8   delay(2000);
9}
10
11void  loop() {
12   moisture_level= analogRead(moisture_sensor);
13   moisture_level  = map(moisture_level,550,10,0,100);
14   Serial.print("Moisture level : ");
15   Serial.print(moisture_level);
16   Serial.println("%");
17   if(moisture_level<10){   // if moisture level is less than 10%
18      digitalWrite(4,HIGH); // turn  on pump
19     }
20     else{
21      digitalWrite(4,LOW); // else no need to  pump water
22     }
23   delay(10 `00); 
24}

1int moisture_sensor = A0; // moisture sensor connected to analog pin A0
2int
3  moisture_level ;
4
5void setup() {
6   pinMode(4,OUTPUT);
7   Serial.begin(9600);
8
9   Serial.println("Getting sensor reading");
10   delay(2000);
11}
12
13void
14  loop() {
15   moisture_level= analogRead(moisture_sensor);
16   moisture_level
17  = map(moisture_level,550,10,0,100);
18   Serial.print("Moisture level : ");
19
20   Serial.print(moisture_level);
21   Serial.println("%");
22   if(moisture_level<10){
23   // if moisture level is less than 10%
24      digitalWrite(4,HIGH); // turn
25  on pump
26     }
27     else{
28      digitalWrite(4,LOW); // else no need to
29  pump water
30     }
31   delay(10 `00); 
32}