Arduino RC interface for helicopters

1/*  Carlo Stramaglia 10 October 2021
2 *  Code for driving a servo motor   using an analog model remote conrol
3 *  
4 *  look at my youtube channel https://www.youtube.com/c/CarloStramaglia
5   */
6
7#include<Servo.h> 
8
9Servo servo1; 
10
11int angle=15;
12
13int   ch1;
14
15int val1;
16
17void setup() {
18  
19pinMode(6, INPUT); // Receiver   channel 1 PIN input connection to Arduino
20pinMode(2, OUTPUT); // Arduino output   for LED light
21pinMode(13, OUTPUT); // Internal Arduino led for debug purpose
22digitalWrite(2,   LOW);
23digitalWrite(13, LOW); 
24
25servo1.attach(8); // Servo PIN connection   on the Arduino
26servo1.write(15); // Go to home position at 15 degrees
27
28Serial.begin(9600);
29}
30
31void   loop() {
32  
33  ch1 = pulseIn(6, HIGH, 25000); //Configuration of the plseIN   on PIN 6 
34
35  if (ch1 > 1400 and ch1 < 1500){
36    digitalWrite(2, HIGH);
37     digitalWrite(13, HIGH);
38  }
39    
40  else if (ch1 > 1900) {
41    digitalWrite(2,   LOW);
42    digitalWrite(13, LOW);
43    //servo1.write(0);
44     }
45  else   if (ch1 > 900 and ch1 < 1000) {
46    digitalWrite(2, HIGH);
47    digitalWrite(13,   HIGH);
48    for (angle=15 ; angle <= 130; angle +=1) {
49      servo1.write(angle);
50       delay (40);
51    }
52    for (angle=130 ; angle >= 40; angle -=1) {
53       servo1.write(angle);
54      delay (40);
55    }
56    for (angle=40 ;   angle <= 179; angle +=1) {
57      servo1.write(angle);
58      delay (40);
59     }
60    for (angle=179 ; angle >= 15; angle -=1) {
61      servo1.write(angle);
62       delay (40);
63    }
64  }
65  
66 }
67