Bluetooth Controlled Bot

Bluetooth Controlled Bot using custom made App on Android Studio and Arduino

Apr 27, 2021

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1 respects

Components and supplies

Capacitor 10 µF

Capacitor 10 nF

Relay (generic)

Dual H-Bridge motor drivers L298

Rotary Potentiometer, 500 kohm

Jumper wires (generic)

Arduino UNO

Multi-Turn Precision Potentiometer- 1k ohms (25 Turn)

Tools and machines

Hot glue gun (generic)

Soldering iron (generic)

Apps and platforms

Arduino IDE

Project description

Code

Signal Sensor and Controller

arduino

This code finds out the On Time and the value is conditionally checked to control the bot respectively

1const int i = 7;
2const int in1 = 4;
3const int in2 = 5;
4const   int in3 = 10;
5const int in4 = 11;
6const int in5 = 12;
7unsigned long d;
8
9void   setup() {
10  pinMode(i, INPUT);
11  pinMode(in1, OUTPUT);
12  pinMode(in2, OUTPUT);
13   pinMode(in3, OUTPUT);
14  pinMode(in4, OUTPUT);
15  pinMode(in5, OUTPUT);
16   Serial.begin(57600);
17}
18void loop() {
19  d = pulseIn(i, HIGH);
20
21   if(22000 <= d && d <= 24000) {
22    forwards();
23  }
24  else if(10000 <=   d && d <= 12000) {
25    backwards();
26  }
27  else if(5000 <= d && d <= 7000)   {
28    left();
29  }
30  else if(4400 <= d && d <= 4999) {
31    right();
32   }
33  else if(3000 <= d && d <= 4300) {
34    digitalWrite(in5, LOW);
35    OFF();
36   }
37  else {
38    digitalWrite(in5, HIGH);
39    OFF();
40  }
41}
42void   forwards() {
43  digitalWrite(in1, LOW);
44  digitalWrite(in2, HIGH);
45  digitalWrite(in3,   LOW);
46  digitalWrite(in4, HIGH);
47}
48void backwards() {
49  digitalWrite(in1,   HIGH);
50  digitalWrite(in2, LOW);
51  digitalWrite(in3, HIGH);
52  digitalWrite(in4,   LOW);
53}
54void left() {
55  digitalWrite(in1, HIGH);
56  digitalWrite(in2,   LOW);
57  digitalWrite(in3, LOW);
58  digitalWrite(in4, HIGH);
59}
60void right()   {
61  digitalWrite(in1, LOW);
62  digitalWrite(in2, HIGH);
63  digitalWrite(in3,   HIGH);
64  digitalWrite(in4, LOW);
65}
66void OFF() {
67  digitalWrite(in1,   LOW);
68  digitalWrite(in2, LOW);
69  digitalWrite(in3, LOW);
70  digitalWrite(in4,   LOW);
71}

const int i = 7;
const int in1 = 4;
const int in2 = 5;
const   int in3 = 10;
const int in4 = 11;
const int in5 = 12;
unsigned long d;

void   setup() {
  pinMode(i, INPUT);
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
   pinMode(in3, OUTPUT);
  pinMode(in4, OUTPUT);
  pinMode(in5, OUTPUT);
   Serial.begin(57600);
}
void loop() {
  d = pulseIn(i, HIGH);

   if(22000 <= d && d <= 24000) {
    forwards();
  }
  else if(10000 <=   d && d <= 12000) {
    backwards();
  }
  else if(5000 <= d && d <= 7000)   {
    left();
  }
  else if(4400 <= d && d <= 4999) {
    right();
   }
  else if(3000 <= d && d <= 4300) {
    digitalWrite(in5, LOW);
    OFF();
   }
  else {
    digitalWrite(in5, HIGH);
    OFF();
  }
}
void   forwards() {
  digitalWrite(in1, LOW);
  digitalWrite(in2, HIGH);
  digitalWrite(in3,   LOW);
  digitalWrite(in4, HIGH);
}
void backwards() {
  digitalWrite(in1,   HIGH);
  digitalWrite(in2, LOW);
  digitalWrite(in3, HIGH);
  digitalWrite(in4,   LOW);
}
void left() {
  digitalWrite(in1, HIGH);
  digitalWrite(in2,   LOW);
  digitalWrite(in3, LOW);
  digitalWrite(in4, HIGH);
}
void right()   {
  digitalWrite(in1, LOW);
  digitalWrite(in2, HIGH);
  digitalWrite(in3,   HIGH);
  digitalWrite(in4, LOW);
}
void OFF() {
  digitalWrite(in1,   LOW);
  digitalWrite(in2, LOW);
  digitalWrite(in3, LOW);
  digitalWrite(in4,   LOW);
}

Signal Sensor and Controller

arduino

This code finds out the On Time and the value is conditionally checked to control the bot respectively

1const int i = 7;
2const int in1 = 4;
3const int in2 = 5;
4const  int in3 = 10;
5const int in4 = 11;
6const int in5 = 12;
7unsigned long d;
8
9void  setup() {
10  pinMode(i, INPUT);
11  pinMode(in1, OUTPUT);
12  pinMode(in2, OUTPUT);
13  pinMode(in3, OUTPUT);
14  pinMode(in4, OUTPUT);
15  pinMode(in5, OUTPUT);
16  Serial.begin(57600);
17}
18void loop() {
19  d = pulseIn(i, HIGH);
20
21  if(22000 <= d && d <= 24000) {
22    forwards();
23  }
24  else if(10000 <=  d && d <= 12000) {
25    backwards();
26  }
27  else if(5000 <= d && d <= 7000)  {
28    left();
29  }
30  else if(4400 <= d && d <= 4999) {
31    right();
32  }
33  else if(3000 <= d && d <= 4300) {
34    digitalWrite(in5, LOW);
35    OFF();
36  }
37  else {
38    digitalWrite(in5, HIGH);
39    OFF();
40  }
41}
42void  forwards() {
43  digitalWrite(in1, LOW);
44  digitalWrite(in2, HIGH);
45  digitalWrite(in3,  LOW);
46  digitalWrite(in4, HIGH);
47}
48void backwards() {
49  digitalWrite(in1,  HIGH);
50  digitalWrite(in2, LOW);
51  digitalWrite(in3, HIGH);
52  digitalWrite(in4,  LOW);
53}
54void left() {
55  digitalWrite(in1, HIGH);
56  digitalWrite(in2,  LOW);
57  digitalWrite(in3, LOW);
58  digitalWrite(in4, HIGH);
59}
60void right()  {
61  digitalWrite(in1, LOW);
62  digitalWrite(in2, HIGH);
63  digitalWrite(in3,  HIGH);
64  digitalWrite(in4, LOW);
65}
66void OFF() {
67  digitalWrite(in1,  LOW);
68  digitalWrite(in2, LOW);
69  digitalWrite(in3, LOW);
70  digitalWrite(in4,  LOW);
71}

const int i = 7;
const int in1 = 4;
const int in2 = 5;
const  int in3 = 10;
const int in4 = 11;
const int in5 = 12;
unsigned long d;

void  setup() {
  pinMode(i, INPUT);
  pinMode(in1, OUTPUT);
  pinMode(in2, OUTPUT);
  pinMode(in3, OUTPUT);
  pinMode(in4, OUTPUT);
  pinMode(in5, OUTPUT);
  Serial.begin(57600);
}
void loop() {
  d = pulseIn(i, HIGH);

  if(22000 <= d && d <= 24000) {
    forwards();
  }
  else if(10000 <=  d && d <= 12000) {
    backwards();
  }
  else if(5000 <= d && d <= 7000)  {
    left();
  }
  else if(4400 <= d && d <= 4999) {
    right();
  }
  else if(3000 <= d && d <= 4300) {
    digitalWrite(in5, LOW);
    OFF();
  }
  else {
    digitalWrite(in5, HIGH);
    OFF();
  }
}
void  forwards() {
  digitalWrite(in1, LOW);
  digitalWrite(in2, HIGH);
  digitalWrite(in3,  LOW);
  digitalWrite(in4, HIGH);
}
void backwards() {
  digitalWrite(in1,  HIGH);
  digitalWrite(in2, LOW);
  digitalWrite(in3, HIGH);
  digitalWrite(in4,  LOW);
}
void left() {
  digitalWrite(in1, HIGH);
  digitalWrite(in2,  LOW);
  digitalWrite(in3, LOW);
  digitalWrite(in4, HIGH);
}
void right()  {
  digitalWrite(in1, LOW);
  digitalWrite(in2, HIGH);
  digitalWrite(in3,  HIGH);
  digitalWrite(in4, LOW);
}
void OFF() {
  digitalWrite(in1,  LOW);
  digitalWrite(in2, LOW);
  digitalWrite(in3, LOW);
  digitalWrite(in4,  LOW);
}

Downloadable files

Amplifier Circuit

This is a class A audio amplifier. The AC signal represents the signal coming from the Bluetooth receiver and probed node is connected to arduino.

Amplifier Circuit

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