Semaphore with Arduino

Use Semaphore with Arduino to make a stoplight.

Jul 9, 2017

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lights

led

Devices & Components

Arduino Uno Rev3

Resistor 221 ohm

5 mm LED: Green

5 mm LED: Yellow

5 mm LED: Red

Jumper wires (generic)

Hardware & Tools

Soldering iron (generic)

Software & Tools

Arduino IDE

Project description

Code

Project Code

c_cpp

//Green Pin 2 //Yellow pin 3 //Red pin 4

1//Green Pin 2
2//Yellow pin 3
3//Red pin 4
4//////////// made by   VINICIUS LOPES //////////////
5
6void setup (){
7pinMode(2, OUTPUT);// green
8pinMode(3,   OUTPUT);// yellow
9pinMode(4, OUTPUT);// red
10}
11void loop (){
12
13  
14digitalWrite(4,HIGH);
15delay(7000);
16digitalWrite(4,LOW);
17delay(100);
18
19digitalWrite(3,HIGH);
20delay(3000);
21digitalWrite(3,LOW);
22delay(100);
23
24digitalWrite(2,HIGH);
25delay(7000);
26digitalWrite(2,LOW);
27delay(100);
28
29}
30

//Green Pin 2
//Yellow pin 3
//Red pin 4
//////////// made by   VINICIUS LOPES //////////////

void setup (){
pinMode(2, OUTPUT);// green
pinMode(3,   OUTPUT);// yellow
pinMode(4, OUTPUT);// red
}
void loop (){

  
digitalWrite(4,HIGH);
delay(7000);
digitalWrite(4,LOW);
delay(100);

digitalWrite(3,HIGH);
delay(3000);
digitalWrite(3,LOW);
delay(100);

digitalWrite(2,HIGH);
delay(7000);
digitalWrite(2,LOW);
delay(100);

}

Project Code

c_cpp

//Green Pin 2 //Yellow pin 3 //Red pin 4

1//Green Pin 2
2//Yellow pin 3
3//Red pin 4
4//////////// made by  VINICIUS LOPES //////////////
5
6void setup (){
7pinMode(2, OUTPUT);// green
8pinMode(3,  OUTPUT);// yellow
9pinMode(4, OUTPUT);// red
10}
11void loop (){
12
13  
14digitalWrite(4,HIGH);
15delay(7000);
16digitalWrite(4,LOW);
17delay(100);
18
19digitalWrite(3,HIGH);
20delay(3000);
21digitalWrite(3,LOW);
22delay(100);
23
24digitalWrite(2,HIGH);
25delay(7000);
26digitalWrite(2,LOW);
27delay(100);
28
29}
30

//Green Pin 2
//Yellow pin 3
//Red pin 4
//////////// made by  VINICIUS LOPES //////////////

void setup (){
pinMode(2, OUTPUT);// green
pinMode(3,  OUTPUT);// yellow
pinMode(4, OUTPUT);// red
}
void loop (){

  
digitalWrite(4,HIGH);
delay(7000);
digitalWrite(4,LOW);
delay(100);

digitalWrite(3,HIGH);
delay(3000);
digitalWrite(3,LOW);
delay(100);

digitalWrite(2,HIGH);
delay(7000);
digitalWrite(2,LOW);
delay(100);

}

Downloadable files

Schematic 1

//Green Pin 2 //Yellow pin 3 //Red pin 4

Schematic 1

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