Tutorial: Control 12V devices with Arduino Mosfet module

In this tutorial you will learn how to turn of and on 12V Led with the snap of the finger

Feb 16, 2021

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LGPL3+

mosfet module

12v devices

Devices & Components

Arduino Nano

Sound Sensor

Mosfet module

Software & Tools

Arduino IDE

Project description

Code

Turning 12V LED on/off and controlling its brightness

arduino

1int ledPin = 5;
2int ledStatus=0;
3int brightness=0;
4unsigned long   Snap_Timestamp;
5
6void setup() {
7  attachInterrupt(1,Sound_Detected, RISING);
8   pinMode(ledPin, OUTPUT);
9}
10void Sound_Detected() {
11  if(millis()-Snap_Timestamp   >200 ){ 
12    if (ledStatus==0){
13       ledStatus=1; brightness=1;
14    }
15     else {
16      if(millis()-Snap_Timestamp <1000 ) brightness++;
17      if(brightness>5)brightness=5;
18       if(millis()-Snap_Timestamp >=1000) {
19        ledstatus=0;
20        brightness=0
21       }
22    }
23    Snap_Timestamp=millis();
24  }
25}
26void loop() {
27   analogWrite(ledPin,brightness*50);
28}
29

int ledPin = 5;
int ledStatus=0;
int brightness=0;
unsigned long   Snap_Timestamp;

void setup() {
  attachInterrupt(1,Sound_Detected, RISING);
   pinMode(ledPin, OUTPUT);
}
void Sound_Detected() {
  if(millis()-Snap_Timestamp   >200 ){ 
    if (ledStatus==0){
       ledStatus=1; brightness=1;
    }
     else {
      if(millis()-Snap_Timestamp <1000 ) brightness++;
      if(brightness>5)brightness=5;
       if(millis()-Snap_Timestamp >=1000) {
        ledstatus=0;
        brightness=0
       }
    }
    Snap_Timestamp=millis();
  }
}
void loop() {
   analogWrite(ledPin,brightness*50);
}

Turning of 12V LED with the fingersnap (using interrupts)

arduino

1int ledPin = 5;
2int ledStatus=0;
3unsigned long Snap_Timestamp;
4
5void   setup() {
6  attachInterrupt(1,Sound_Detected, RISING);
7  pinMode(ledPin, OUTPUT);
8}
9
10void   Sound_Detected() {
11  if(millis()-Snap_Timestamp >200 ){
12    if (ledStatus==0)   ledStatus=1;
13    else ledStatus=0;
14    Snap_Timestamp=millis();
15  }
16}
17
18void   loop() {
19  digitalWrite(ledPin,ledStatus);
20}
21

int ledPin = 5;
int ledStatus=0;
unsigned long Snap_Timestamp;

void   setup() {
  attachInterrupt(1,Sound_Detected, RISING);
  pinMode(ledPin, OUTPUT);
}

void   Sound_Detected() {
  if(millis()-Snap_Timestamp >200 ){
    if (ledStatus==0)   ledStatus=1;
    else ledStatus=0;
    Snap_Timestamp=millis();
  }
}

void   loop() {
  digitalWrite(ledPin,ledStatus);
}

Turning of 12V LED with the fingersnap

arduino

1int SoundDetected =0;
2int sensorPin = 3;
3int ledPin = 5;
4int   ledStatus=0;
5void setup() {
6   pinMode(sensorPin, INPUT);
7   pinMode(ledPin,   OUTPUT);
8}
9
10void loop() {
11  SoundDetected=digitalRead(sensorPin);
12   if (SoundDetected==1){
13    if (ledStatus==0) ledStatus=1;
14    else ledStatus=0;
15     digitalWrite(ledPin,ledStatus);
16    delay(100);
17  }
18}

int SoundDetected =0;
int sensorPin = 3;
int ledPin = 5;
int   ledStatus=0;
void setup() {
   pinMode(sensorPin, INPUT);
   pinMode(ledPin,   OUTPUT);
}

void loop() {
  SoundDetected=digitalRead(sensorPin);
   if (SoundDetected==1){
    if (ledStatus==0) ledStatus=1;
    else ledStatus=0;
     digitalWrite(ledPin,ledStatus);
    delay(100);
  }
}

Turning 12V LED on/off and controlling its brightness

arduino

1int ledPin = 5;
2int ledStatus=0;
3int brightness=0;
4unsigned long  Snap_Timestamp;
5
6void setup() {
7  attachInterrupt(1,Sound_Detected, RISING);
8  pinMode(ledPin, OUTPUT);
9}
10void Sound_Detected() {
11  if(millis()-Snap_Timestamp  >200 ){ 
12    if (ledStatus==0){
13       ledStatus=1; brightness=1;
14    }
15    else {
16      if(millis()-Snap_Timestamp <1000 ) brightness++;
17      if(brightness>5)brightness=5;
18      if(millis()-Snap_Timestamp >=1000) {
19        ledstatus=0;
20        brightness=0
21      }
22    }
23    Snap_Timestamp=millis();
24  }
25}
26void loop() {
27  analogWrite(ledPin,brightness*50);
28}
29

int ledPin = 5;
int ledStatus=0;
int brightness=0;
unsigned long  Snap_Timestamp;

void setup() {
  attachInterrupt(1,Sound_Detected, RISING);
  pinMode(ledPin, OUTPUT);
}
void Sound_Detected() {
  if(millis()-Snap_Timestamp  >200 ){ 
    if (ledStatus==0){
       ledStatus=1; brightness=1;
    }
    else {
      if(millis()-Snap_Timestamp <1000 ) brightness++;
      if(brightness>5)brightness=5;
      if(millis()-Snap_Timestamp >=1000) {
        ledstatus=0;
        brightness=0
      }
    }
    Snap_Timestamp=millis();
  }
}
void loop() {
  analogWrite(ledPin,brightness*50);
}

Turning of 12V LED with the fingersnap

arduino

1int SoundDetected =0;
2int sensorPin = 3;
3int ledPin = 5;
4int  ledStatus=0;
5void setup() {
6   pinMode(sensorPin, INPUT);
7   pinMode(ledPin,  OUTPUT);
8}
9
10void loop() {
11  SoundDetected=digitalRead(sensorPin);
12  if (SoundDetected==1){
13    if (ledStatus==0) ledStatus=1;
14    else ledStatus=0;
15    digitalWrite(ledPin,ledStatus);
16    delay(100);
17  }
18}

int SoundDetected =0;
int sensorPin = 3;
int ledPin = 5;
int  ledStatus=0;
void setup() {
   pinMode(sensorPin, INPUT);
   pinMode(ledPin,  OUTPUT);
}

void loop() {
  SoundDetected=digitalRead(sensorPin);
  if (SoundDetected==1){
    if (ledStatus==0) ledStatus=1;
    else ledStatus=0;
    digitalWrite(ledPin,ledStatus);
    delay(100);
  }
}

Turning of 12V LED with the fingersnap (using interrupts)

arduino

1int ledPin = 5;
2int ledStatus=0;
3unsigned long Snap_Timestamp;
4
5void  setup() {
6  attachInterrupt(1,Sound_Detected, RISING);
7  pinMode(ledPin, OUTPUT);
8}
9
10void  Sound_Detected() {
11  if(millis()-Snap_Timestamp >200 ){
12    if (ledStatus==0)  ledStatus=1;
13    else ledStatus=0;
14    Snap_Timestamp=millis();
15  }
16}
17
18void  loop() {
19  digitalWrite(ledPin,ledStatus);
20}
21

int ledPin = 5;
int ledStatus=0;
unsigned long Snap_Timestamp;

void  setup() {
  attachInterrupt(1,Sound_Detected, RISING);
  pinMode(ledPin, OUTPUT);
}

void  Sound_Detected() {
  if(millis()-Snap_Timestamp >200 ){
    if (ledStatus==0)  ledStatus=1;
    else ledStatus=0;
    Snap_Timestamp=millis();
  }
}

void  loop() {
  digitalWrite(ledPin,ledStatus);
}

Downloadable files

mosfet_diagram_3nEHzFLoGJ.png

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