Toggle switch has rapid HIGH/LOW output in ON position

-

i'm using 3 prong toggle switch wired through 1kohm resistor suggested in this forum thread read toggle switches. had working fine yesterday, today, after doing experimenting tone() function, , reverting original code, toggle switch behaves in following manner (tested first connected lcd screen , through serial out) : in "off" position, works expected, returning "0" output. in should "on" position, should returning "1", returns "0" , "1" in uneven intervals when have printing constant stream serial, example, should return "111111111...." in on position, returns "000100010001100001". i'm curious why happening now, have reverted both code , wiring functional state. i'm including code, input pin switch digital pin 7, other lead switch wired directly ground.
code: [select]
// * lcd rs pin digital pin 12
// * lcd enable pin digital pin 11
// * lcd d4 pin digital pin 5
// * lcd d5 pin digital pin 4
// * lcd d6 pin digital pin 3
// * lcd d7 pin digital pin 2
// * lcd r/w pin ground
// * lcd vss pin ground
// * lcd vcc pin 5v
// * 10k resistor:
// * ends +5v , ground
// * pot lcd vo pin (pin 3)
// *toggle switch on digital pin 7
// *analog joystick on analog pins 0,1, , 4.
#include <liquidcrystal.h>

liquidcrystal lcd(12, 11, 5, 4, 3, 2);
int xpotpin = 0;
int ypotpin = 1;
int bpotpin = 4;
int spin = 7;
int xval = 0;
int yval = 0;
int bval = 0;
int switchstate = 0;

void setup() {
  lcd.begin(16, 2);
  pinmode(spin, input);
  serial.begin(9600);
  delay(1000);
 
}

void loop() {


xval = analogread(xpotpin);
yval = analogread(ypotpin);
bval = analogread(bpotpin);
switchstate = digitalread(spin);
lcd.clear();
lcd.setcursor(0,0);
lcd.print("x:");
lcd.print(xval);
lcd.setcursor(7,0);
lcd.print("y:");
lcd.print(yval);
lcd.setcursor(11,1);
lcd.print(switchstate);


if (bval<50){
  lcd.setcursor(0,1);
  lcd.print("button on");
} else { lcd.setcursor(0,1);
         lcd.print("button off");}         

delay(100);
}

use pinmode(spin, input_pullup);
or
put 10k resistor pin 7 5 volts.


Arduino Forum > Using Arduino > General Electronics > Toggle switch has rapid HIGH/LOW output in ON position


arduino

Comments

Post a Comment

Popular posts from this blog

invalid use of void expresion in FlexiTimer2 library

-
Image
hello, first post asking in forum patient if dont correctly   well, im trying make robot evades obstacles , uses interrupts in order distances. ive used flexitimer2 run void function each 5ms, problem whe try verify program says me there error in use of flexitimer.    code: [select] flexitimer2::set(1, 1.0/1000, rastreodistanciamin()); i copy code below, please can tell error , how solve it, ive been loking dont know do. thank you code: [select] #include <flexitimer2.h> #include <servo.h> //motor a int ena = 7; int in1=6; int in2 = 5; //motor b int in3=11; int in4=10; int enb=9; servo cabeza; //hc-sr04 device int echo = 13; int triger = 12; //it use hc-sr04 determine , return distance in front of him int calculodistancia(){   volatile int tiempo;   volatile int distancia;   digitalwrite(triger,low); /* por cuestión de estabilización del sensor*/   delaymicroseconds(5);   digitalwrite(triger, high); /* envío del pulso ultrasónico*/   delaymicroseconds(10);   tiem
Read more

error: a function-definition is not allowed here before '{' token

-
i'm new member. me pls code: [select] void manhinh1(){                              tempc = analogread(adc);   tempc = tempc * 0.48828125;                                          lcd.setcursor(0, 0); lcd.print("nhiet: ");                                      lcd.setcursor(7, 0); lcd.print(tempc);   lcd.setcursor(13,0); lcd.print((char)223);    lcd.setcursor(14,0); lcd.print("c");   if(max > min){     if (tempc > max)            {digitalwrite(fan, low);           lcd.setcursor(2, 1); lcd.print("lam mat.....");}     else if (tempc < min)           {digitalwrite(hot, low);           lcd.setcursor(2, 1); lcd.print("dang suoi...");           delay(10000); }     else if (tempc > min && tempc < max)           {digitalwrite(fan, high);            digitalwrite(hot, high);            lcd.setcursor(2, 1); lcd.print("on dinh!!");}              }    else if (max < min){    lcd.setcursor(0, 1);               
Read more

LED Strip Code

-
i downloaded code. here have several single leds flashing music microphone. in project, instead of single rgb leds, have 5 rgb led strips. need change in code? led strip 10m supernight rgb strip cut 5 equal strips. // arduino pin numbers const int do_pin = 2; const int ao_pin = 0; int sound; int led1 = 8; int led2 = 9; int led3 = 10; int led4 = 11; int led5 = 12;   void setup() {   pinmode(do_pin, input);   pinmode(led1, output);   pinmode(led2, output);   pinmode(led3, output);   pinmode(led4, output);   pinmode(led5, output);   serial.begin(9600); }   void loop() {     if (sound > 31) {     digitalwrite(led1, high);   }     if (sound < 31) {     digitalwrite(led1, low);   }     if (sound > 35) {     digitalwrite(led2, high);   }     if (sound < 35) {     digitalwrite(led2, low);   }     if (sound > 40) {     digitalwrite(led3, high);   }     if (sound < 40) {     digitalwrite(led3, low);   }     if (sound > 45) {     digitalwrite(led4, high);   }     if
Read more