arduino one.

alexirru · March 25, 2016, 1:16am

I made a circuit with seven segments displays and some 74ls47, when I connected the arduino to my computer, the led of Tx was turned on, that was yesterday, and today, when I wanted to load a program to my arduino didn't function, and the fuse it was very warm, then I connected current trought the another input and the arduino turned on, then I want to know, why my arduino fuse burned? I only connected it to muy computer.

dave-in-nj · March 25, 2016, 1:38am

um.... your subject line does not seem to match with your question.

can you post a sketch of your circuits ?
maybe attach a couple photos ?

alexirru · March 25, 2016, 1:57am

I am sorry my english is not good, this is my question using a translate:

I made a circuit with my arduino one to show me the room temperature using 3 7 segment displays, records 74LS47 and breadboard, yesterday enter the program to arduino and it was excelent but today when I wanted to admit you another program (as the other did not work), the arduino not lit, and touch the fuse located beside the USB port arduino this fuse was burning, then connect power to another port (black loop), and the arduino lit properly, then i want to know why he could have burned? to not make that mistake again, only I connected to the computer and is supposed to give the voltage and current necessary, and if possible how to enter programming to the plate otherwise?

TomGeorge · March 25, 2016, 2:15am

Hi,

¿Puede usted por favor enviar una copia de su circuito , en el CAD o una imagen de un circuito dibujado a mano en formato jpg, png ?

¿Puede usted por favor una copia de su dibujo , el uso de etiquetas de código ?
Se hacen con el icono < / > en el menú de respuesta.
Ver la sección 7 http://forum.arduino.cc/index.php/topic,148850.0.html

I hope it translated okay through google.

Tom...

alexirru · March 25, 2016, 2:21am

float temp;
int analogIn=A1;

void setup(){

  Serial.begin(9600);
  pinMode(9,OUTPUT);
  pinMode(8,OUTPUT);
  pinMode(7,OUTPUT);
  pinMode(6,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(2,OUTPUT);
}

void loop(){
 
  int temp=analogRead(analogIn);
  temp=(500*temp)/1024;
  Serial.println(temp);

switch (temp) {
   case 0:
digitalWrite(8, LOW);
digitalWrite(9, LOW);
digitalWrite(7, LOW);
digitalWrite(6, LOW);

digitalWrite(5, LOW);
digitalWrite(4, LOW);
digitalWrite(3, LOW);
digitalWrite(2, LOW);

     break;
   case 1:
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, LOW);

digitalWrite(9, LOW);
digitalWrite(8, LOW);
digitalWrite(7, LOW);
digitalWrite(6, LOW);     
     break;
   case 2:
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
digitalWrite(4, LOW);
digitalWrite(5, LOW);

digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);    
     break;
   case 3:
digitalWrite(2, HIGH);
digitalWrite(3, HIGH);
digitalWrite(4, LOW);
digitalWrite(5, LOW);

digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);     
     break;
   case 4:
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, HIGH);
digitalWrite(5, LOW);

digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);    
     break;
   case 5:
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
digitalWrite(4, HIGH);
digitalWrite(5, LOW);

digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);     
     break;
   case 6:
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
digitalWrite(4, HIGH);
digitalWrite(5, LOW);

digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);    
     break;
   case 7:
digitalWrite(2, HIGH);
digitalWrite(3, HIGH);
digitalWrite(4, HIGH);
digitalWrite(5, LOW);

digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);     
     break;
   case 8:
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, HIGH);

digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);    
     break;
   case 9:
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, HIGH);

digitalWrite(6, LOW);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);     
     break;
/////////////////////
   case 10:
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, LOW);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);

     break;
   case 11:
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, LOW);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);     
     break;
   case 12:
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
digitalWrite(4, LOW);
digitalWrite(5, LOW);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);    
     break;
   case 13:
digitalWrite(2, HIGH);
digitalWrite(3, HIGH);
digitalWrite(4, LOW);
digitalWrite(5, LOW);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);     
     break;
   case 14:
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, HIGH);
digitalWrite(5, LOW);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);    
     break;
   case 15:
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
digitalWrite(4, HIGH);
digitalWrite(5, LOW);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);     
     break;
   case 16:
digitalWrite(2, LOW);
digitalWrite(3, HIGH);
digitalWrite(4, HIGH);
digitalWrite(5, LOW);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);    
     break;
   case 17:
digitalWrite(2, HIGH);
digitalWrite(3, HIGH);
digitalWrite(4, HIGH);
digitalWrite(5, LOW);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);     
     break;
   case 18:
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, HIGH);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);    
     break;
   case 19:
digitalWrite(2, HIGH);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, HIGH);

digitalWrite(6, HIGH);
digitalWrite(7, LOW);
digitalWrite(8, LOW);
digitalWrite(9, LOW);     
     break;
     
     case 20:
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, LOW);
digitalWrite(5, LOW);

digitalWrite(6, LOW);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, LOW);   

break;

case 21:
digitalWrite(6, LOW);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, LOW); 

digitalWrite(5, LOW);
digitalWrite(4, LOW);
digitalWrite(3, LOW);
digitalWrite(2, HIGH); 
break;

case 22:
digitalWrite(6, LOW);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, LOW); 

digitalWrite(5, LOW);
digitalWrite(4, LOW);
digitalWrite(3, HIGH);
digitalWrite(2, LOW); 
break;

case 23:
digitalWrite(6, LOW);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, LOW); 

digitalWrite(5, LOW);
digitalWrite(4, LOW);
digitalWrite(3, HIGH);
digitalWrite(2, HIGH); 
break;

case 24:
digitalWrite(6, LOW);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, LOW); 

digitalWrite(5, LOW);
digitalWrite(4, HIGH);
digitalWrite(3, LOW);
digitalWrite(2, LOW); 
break;

case 25:
digitalWrite(6, LOW);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, LOW); 

digitalWrite(5, LOW);
digitalWrite(4, HIGH);
digitalWrite(3, LOW);
digitalWrite(2, HIGH); 
break;

case 26:
digitalWrite(6, LOW);
digitalWrite(7, HIGH);
digitalWrite(8, LOW);
digitalWrite(9, LOW); 

digitalWrite(5, LOW);
digitalWrite(4, HIGH);
digitalWrite(3, HIGH);
digitalWrite(2, LOW);
break;}


  delay(3000);}//

TomGeorge · March 25, 2016, 3:08am

Hi,

You also need resistors between the 74LS74 and the LED Display.
Your PC USB is going into current limit, because you have no current limit resistors.

Tom...

alexirru · March 25, 2016, 3:20am

I am going to try it, thanks you my friend.

system · May 5, 2021, 5:48pm