Automatic Pill Dispenser

1Bluetooth & servo code
2#include <SoftwareSerial.h>
3#include <Servo.h>
4
5SoftwareSerial BTserial(9,10); // RX | TX
6
7Servo servo_1;
8Servo servo_2;
9Servo servo_3;
10Servo servo_4;
11
12void setup() {
13    Serial.begin(9600);
14    BTserial.begin(9600);
15   
16    servo_1.attach(5);
17    servo_2.attach(6);
18    servo_3.attach(7);
19    servo_4.attach(8);
20}
21
22void loop() {
23    if (BTserial.available()) {
24        int input = BTserial.read();
25
26        if (input == 1) {
27            for(int i = 0; i < 5; i++) {
28            servo_1.write(10);
29            delay(100);
30            servo_1.write(40);
31            delay(100);
32           }
33            servo_1.write(20);
34            delay(1000);
35            servo_1.write(100);
36            delay(1000);
37        }
38        else if (input == 2) {
39            for(int i = 0; i < 5; i++) {
40            servo_2.write(10);
41            delay(200);
42            servo_2.write(40);
43            delay(200);
44           }
45            servo_2.write(20);
46            delay(1000);
47            servo_2.write(100);
48            delay(1000);
49        }
50        else if (input == 3) {
51            for(int i = 0; i < 5; i++) {
52            servo_3.write(10);
53            delay(200);
54            servo_3.write(40);
55            delay(200);
56           }
57            servo_3.write(20);
58            delay(1000);
59            servo_3.write(100);
60            delay(1000);
61        }
62        else if (input == 4) {
63            for(int i = 0; i < 5; i++) {
64            servo_4.write(10);
65            delay(200);
66            servo_4.write(40);
67            delay(200);
68           }
69            servo_4.write(20);
70            delay(1000);
71            servo_4.write(100);
72            delay(1000);
73        }
74        input = "";
75    }
76}