Motor-Go-Round

This project is to create a little merry-go-round!

Jan 23, 2021

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audio

kids

Components and supplies

9V battery (generic)

Capacitor 100 µF

Fast / Ultrafast Diode, 1 kV

Arduino UNO

MOSFET Transistor, Switching

SG90 Micro-servo motor

DC Motor, 12 V

Buzzer, Piezo

Temperature Sensor

Apps and platforms

Arduino IDE

Project description

Code

Servo Motor Code

arduino

This is for the second Arduino UNO. This is to control the servo motor, which will raise the little toy up and down as the merry go round spins.

1
2#include <Servo.h>
3
4
5Servo myServo;
6
7 
8void setup()  {
9  // put your setup code here, to run once:
10  myServo.attach(3);
11  
12
13
14}
15
16void  loop() {
17  // put your main code here, to run repeatedly:
18  myServo.write(90);
19  delay(600);
20  myServo.write(0);
21  delay(500);
22  // the delay is large  so that the servo can have enough time to spin
23}
24

#include <Servo.h>


Servo myServo;

 
void setup()  {
  // put your setup code here, to run once:
  myServo.attach(3);
  


}

void  loop() {
  // put your main code here, to run repeatedly:
  myServo.write(90);
  delay(600);
  myServo.write(0);
  delay(500);
  // the delay is large  so that the servo can have enough time to spin
}

Music, Spin, and Temperature

arduino

This is for the first Arduino UNO. It will control the music and speed of the DC motor (which is regulated by the temperature).

1
2
3
4const int tempPin = A1;
5
6const int transistorPin = 9;
7
8int  mintemp = 1023;
9
10int maxtemp = 0;
11
12int cur_temp;
13
14
15const int  piezo = 11;
16
17int transistorValue;
18
19void setup() {
20  // put your setup  code here, to run once:
21
22  
23  Serial.begin(9600);
24  pinMode(transistorPin,  OUTPUT);
25
26  while (millis()<5000){
27    cur_temp = analogRead(tempPin);
28
29    if (cur_temp > maxtemp){
30      maxtemp = cur_temp;
31    }
32    if (cur_temp  < mintemp){
33      mintemp = cur_temp;
34    }
35    
36  }
37  
38  // this  helps us determine the range of temperatures
39  
40  Serial.print("MIN TEMP:  ");
41  Serial.println(mintemp);
42  Serial.print("MAX TEMP: ");
43  Serial.println(maxtemp);
44
45
46}
47
48void  loop() {
49  // put your main code here, to run repeatedly:
50
51  cur_temp =  analogRead(tempPin);
52  
53  Serial.print("CUR TEMP");
54  Serial.println(cur_temp);
55
56  transistorValue = map(cur_temp, mintemp, maxtemp, 100, 250);
57  // converts  temp value to number between 0-255 to PWM the motor. 
58  //we want a higher temperature  to equal faster spin
59  
60  Serial.println(transistorValue);
61
62  
63  analogWrite(transistorPin,  transistorValue);
64  // starts spinning the motor at the speed according to the  temperature
65
66  tone(11, 261, 500);
67  delay(500);
68  tone(11, 294, 130);
69  delay(130);
70  tone(11, 329, 260);
71  delay(260);
72  tone(11, 329, 260);
73  delay(260);
74  tone(11, 294, 130);
75  delay(130);
76  tone(11, 261, 130);
77  delay(130);
78  tone(11, 294, 130);
79  delay(130);
80  tone(11, 329, 130);
81  delay(130);
82  tone(11, 261, 260);
83  delay(260);
84  tone(11, 196, 350);
85  delay(350);
86  // it can only change the speed of the carousel at the end of  each melody
87}
88



const int tempPin = A1;

const int transistorPin = 9;

int  mintemp = 1023;

int maxtemp = 0;

int cur_temp;


const int  piezo = 11;

int transistorValue;

void setup() {
  // put your setup  code here, to run once:

  
  Serial.begin(9600);
  pinMode(transistorPin,  OUTPUT);

  while (millis()<5000){
    cur_temp = analogRead(tempPin);

    if (cur_temp > maxtemp){
      maxtemp = cur_temp;
    }
    if (cur_temp  < mintemp){
      mintemp = cur_temp;
    }
    
  }
  
  // this  helps us determine the range of temperatures
  
  Serial.print("MIN TEMP:  ");
  Serial.println(mintemp);
  Serial.print("MAX TEMP: ");
  Serial.println(maxtemp);


}

void  loop() {
  // put your main code here, to run repeatedly:

  cur_temp =  analogRead(tempPin);
  
  Serial.print("CUR TEMP");
  Serial.println(cur_temp);

  transistorValue = map(cur_temp, mintemp, maxtemp, 100, 250);
  // converts  temp value to number between 0-255 to PWM the motor. 
  //we want a higher temperature  to equal faster spin
  
  Serial.println(transistorValue);

  
  analogWrite(transistorPin,  transistorValue);
  // starts spinning the motor at the speed according to the  temperature

  tone(11, 261, 500);
  delay(500);
  tone(11, 294, 130);
  delay(130);
  tone(11, 329, 260);
  delay(260);
  tone(11, 329, 260);
  delay(260);
  tone(11, 294, 130);
  delay(130);
  tone(11, 261, 130);
  delay(130);
  tone(11, 294, 130);
  delay(130);
  tone(11, 329, 130);
  delay(130);
  tone(11, 261, 260);
  delay(260);
  tone(11, 196, 350);
  delay(350);
  // it can only change the speed of the carousel at the end of  each melody
}

Servo Motor Code

arduino

This is for the second Arduino UNO. This is to control the servo motor, which will raise the little toy up and down as the merry go round spins.

1
2#include <Servo.h>
3
4
5Servo myServo;
6
7 
8void setup()
9  {
10  // put your setup code here, to run once:
11  myServo.attach(3);
12  
13
14
15}
16
17void
18  loop() {
19  // put your main code here, to run repeatedly:
20  myServo.write(90);
21
22  delay(600);
23  myServo.write(0);
24  delay(500);
25  // the delay is large
26  so that the servo can have enough time to spin
27}
28

#include <Servo.h>


Servo myServo;

 
void setup()
  {
  // put your setup code here, to run once:
  myServo.attach(3);
  


}

void
  loop() {
  // put your main code here, to run repeatedly:
  myServo.write(90);

  delay(600);
  myServo.write(0);
  delay(500);
  // the delay is large
  so that the servo can have enough time to spin
}

Music, Spin, and Temperature

arduino

This is for the first Arduino UNO. It will control the music and speed of the DC motor (which is regulated by the temperature).

1
2
3
4const int tempPin = A1;
5
6const int transistorPin = 9;
7
8int
9  mintemp = 1023;
10
11int maxtemp = 0;
12
13int cur_temp;
14
15
16const int
17  piezo = 11;
18
19int transistorValue;
20
21void setup() {
22  // put your setup
23  code here, to run once:
24
25  
26  Serial.begin(9600);
27  pinMode(transistorPin,
28  OUTPUT);
29
30  while (millis()<5000){
31    cur_temp = analogRead(tempPin);
32
33
34    if (cur_temp > maxtemp){
35      maxtemp = cur_temp;
36    }
37    if (cur_temp
38  < mintemp){
39      mintemp = cur_temp;
40    }
41    
42  }
43  
44  // this
45  helps us determine the range of temperatures
46  
47  Serial.print("MIN TEMP:
48  ");
49  Serial.println(mintemp);
50  Serial.print("MAX TEMP: ");
51  Serial.println(maxtemp);
52
53
54}
55
56void
57  loop() {
58  // put your main code here, to run repeatedly:
59
60  cur_temp =
61  analogRead(tempPin);
62  
63  Serial.print("CUR TEMP");
64  Serial.println(cur_temp);
65
66
67  transistorValue = map(cur_temp, mintemp, maxtemp, 100, 250);
68  // converts
69  temp value to number between 0-255 to PWM the motor. 
70  //we want a higher temperature
71  to equal faster spin
72  
73  Serial.println(transistorValue);
74
75  
76  analogWrite(transistorPin,
77  transistorValue);
78  // starts spinning the motor at the speed according to the
79  temperature
80
81  tone(11, 261, 500);
82  delay(500);
83  tone(11, 294, 130);
84
85  delay(130);
86  tone(11, 329, 260);
87  delay(260);
88  tone(11, 329, 260);
89
90  delay(260);
91  tone(11, 294, 130);
92  delay(130);
93  tone(11, 261, 130);
94
95  delay(130);
96  tone(11, 294, 130);
97  delay(130);
98  tone(11, 329, 130);
99
100  delay(130);
101  tone(11, 261, 260);
102  delay(260);
103  tone(11, 196, 350);
104
105  delay(350);
106  // it can only change the speed of the carousel at the end of
107  each melody
108}
109



const int tempPin = A1;

const int transistorPin = 9;

int
  mintemp = 1023;

int maxtemp = 0;

int cur_temp;


const int
  piezo = 11;

int transistorValue;

void setup() {
  // put your setup
  code here, to run once:

  
  Serial.begin(9600);
  pinMode(transistorPin,
  OUTPUT);

  while (millis()<5000){
    cur_temp = analogRead(tempPin);


    if (cur_temp > maxtemp){
      maxtemp = cur_temp;
    }
    if (cur_temp
  < mintemp){
      mintemp = cur_temp;
    }
    
  }
  
  // this
  helps us determine the range of temperatures
  
  Serial.print("MIN TEMP:
  ");
  Serial.println(mintemp);
  Serial.print("MAX TEMP: ");
  Serial.println(maxtemp);


}

void
  loop() {
  // put your main code here, to run repeatedly:

  cur_temp =
  analogRead(tempPin);
  
  Serial.print("CUR TEMP");
  Serial.println(cur_temp);


  transistorValue = map(cur_temp, mintemp, maxtemp, 100, 250);
  // converts
  temp value to number between 0-255 to PWM the motor. 
  //we want a higher temperature
  to equal faster spin
  
  Serial.println(transistorValue);

  
  analogWrite(transistorPin,
  transistorValue);
  // starts spinning the motor at the speed according to the
  temperature

  tone(11, 261, 500);
  delay(500);
  tone(11, 294, 130);

  delay(130);
  tone(11, 329, 260);
  delay(260);
  tone(11, 329, 260);

  delay(260);
  tone(11, 294, 130);
  delay(130);
  tone(11, 261, 130);

  delay(130);
  tone(11, 294, 130);
  delay(130);
  tone(11, 329, 130);

  delay(130);
  tone(11, 261, 260);
  delay(260);
  tone(11, 196, 350);

  delay(350);
  // it can only change the speed of the carousel at the end of
  each melody
}

Downloadable files

Motor Go Round Schematic

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