{"id":256,"date":"2026-09-13T15:05:52","date_gmt":"2026-09-13T20:05:52","guid":{"rendered":"https:\/\/easylab.net.pe\/main\/?page_id=256"},"modified":"2026-09-13T15:09:41","modified_gmt":"2026-09-13T20:09:41","slug":"codigos","status":"publish","type":"page","link":"https:\/\/easylab.net.pe\/main\/index.php\/codigos\/","title":{"rendered":"codigos"},"content":{"rendered":"
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Introduction<\/h6>\n

Codigo en Arduino
copia mientras aprendes<\/span><\/h1>\n

Aqui encontraras codigos muy utiles que podras juntas a tu aplicacion, solo copia y pegalo en tu codigo.\u00a0en este apartado copia los diferentes codigos , pero no solo copia, sino tambien analiza lo que copias.<\/p>\n<\/div><\/div>\n<\/div>\n\n

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<\/span><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n
\n
\n
\n
Marcha Imperial<\/h5>
\n
int<\/span> speakerPin = <\/span>3<\/span>;<\/span><\/div>\n

 <\/p>\n

#define<\/span> <\/span>c<\/span> <\/span>261<\/span><\/div>\n
#define<\/span> <\/span>d<\/span> <\/span>294<\/span><\/div>\n
#define<\/span> <\/span>e<\/span> <\/span>329<\/span><\/div>\n
#define<\/span> <\/span>f<\/span> <\/span>349<\/span><\/div>\n
#define<\/span> <\/span>g<\/span> <\/span>391<\/span><\/div>\n
#define<\/span> <\/span>gS<\/span> <\/span>415<\/span><\/div>\n
#define<\/span> <\/span>a<\/span> <\/span>440<\/span><\/div>\n
#define<\/span> <\/span>aS<\/span> <\/span>455<\/span><\/div>\n
#define<\/span> <\/span>b<\/span> <\/span>466<\/span><\/div>\n
#define<\/span> <\/span>cH<\/span> <\/span>523<\/span><\/div>\n
#define<\/span> <\/span>cSH<\/span> <\/span>554<\/span><\/div>\n
#define<\/span> <\/span>dH<\/span> <\/span>587<\/span><\/div>\n
#define<\/span> <\/span>dSH<\/span> <\/span>622<\/span><\/div>\n
#define<\/span> <\/span>eH<\/span> <\/span>659<\/span><\/div>\n
#define<\/span> <\/span>fH<\/span> <\/span>698<\/span><\/div>\n
#define<\/span> <\/span>fSH<\/span> <\/span>740<\/span><\/div>\n
#define<\/span> <\/span>gH<\/span> <\/span>784<\/span><\/div>\n
#define<\/span> <\/span>gSH<\/span> <\/span>830<\/span><\/div>\n
#define<\/span> <\/span>aH<\/span> <\/span>880<\/span><\/div>\n

 <\/p>\n

void<\/span> <\/span>setup<\/span>()<\/span><\/div>\n
{<\/span><\/div>\n
\/\/Speaker\/\/<\/span><\/div>\n
pinMode<\/span>(<\/span>speakerPin, OUTPUT<\/span>)<\/span>;<\/span><\/div>\n
march<\/span>()<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n

 <\/p>\n

void<\/span> <\/span>loop<\/span>()<\/span><\/div>\n
{<\/span><\/div>\n
}<\/span><\/div>\n

 <\/p>\n

void<\/span> <\/span>beep<\/span> <\/span>(<\/span>unsigned<\/span> <\/span>char<\/span> <\/span>speakerPin<\/span>, <\/span>int<\/span> <\/span>frequencyInHertz<\/span>, <\/span>long<\/span> <\/span>timeInMilliseconds)<\/span><\/div>\n
{<\/span><\/div>\n

 <\/p>\n

int<\/span> x;<\/span><\/div>\n
long<\/span> delayAmount = <\/span>(<\/span>long<\/span>)(<\/span>1000000<\/span>\/frequencyInHertz<\/span>)<\/span>;<\/span><\/div>\n
long<\/span> loopTime = <\/span>(<\/span>long<\/span>)((<\/span>timeInMilliseconds*<\/span>1000<\/span>)<\/span>\/<\/span>(<\/span>delayAmount*<\/span>2<\/span>))<\/span>;<\/span><\/div>\n
for<\/span> <\/span>(<\/span>x=<\/span>0<\/span>;x<loopTime;x++<\/span>)<\/span><\/div>\n
{<\/span><\/div>\n
digitalWrite<\/span>(<\/span>speakerPin,HIGH<\/span>)<\/span>;<\/span><\/div>\n
delayMicroseconds<\/span>(<\/span>delayAmount<\/span>)<\/span>;<\/span><\/div>\n
digitalWrite<\/span>(<\/span>speakerPin,LOW<\/span>)<\/span>;<\/span><\/div>\n
delayMicroseconds<\/span>(<\/span>delayAmount<\/span>)<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n
delay<\/span>(<\/span>20<\/span>)<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n

 <\/p>\n

void<\/span> <\/span>march<\/span>()<\/span><\/div>\n
{<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, a, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, f, <\/span>350<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cH, <\/span>150<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, a, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, f, <\/span>350<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cH, <\/span>150<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>1000<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, eH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, eH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, eH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, fH, <\/span>350<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cH, <\/span>150<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, gS, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, f, <\/span>350<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cH, <\/span>150<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>1000<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, aH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>350<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>150<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, aH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, gSH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, gH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, fSH, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, fH, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, fSH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
delay<\/span>(<\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, aS, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, dSH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, dH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cSH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
\/\/start of the interesting bit<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, cH, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, b, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
delay<\/span>(<\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, f, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, gS, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, f, <\/span>375<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, cH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>375<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cH, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, eH, <\/span>1000<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, aH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>350<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>150<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, aH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, gSH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, gH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, fSH, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, fH, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, fSH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
delay<\/span>(<\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, aS, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, dSH, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, dH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cSH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, cH, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, b, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cH, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
delay<\/span>(<\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, f, <\/span>250<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, gS, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, f, <\/span>375<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, cH, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

beep<\/span>(<\/span>speakerPin, a, <\/span>500<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, f, <\/span>375<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, c, <\/span>125<\/span>)<\/span>;<\/span><\/div>\n
beep<\/span>(<\/span>speakerPin, a, <\/span>1000<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

}<\/span><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n
\n
Tetris<\/h5>
\n
#define<\/span> <\/span>speakerPin<\/span> <\/span>3<\/span><\/div>\n

 <\/p>\n

\/\/ Notas (Hz)<\/span><\/div>\n
#define<\/span> <\/span>DO<\/span> <\/span>262<\/span><\/div>\n
#define<\/span> <\/span>DOS<\/span> <\/span>277<\/span><\/div>\n
#define<\/span> <\/span>RE<\/span> <\/span>294<\/span><\/div>\n
#define<\/span> <\/span>RES<\/span> <\/span>311<\/span><\/div>\n
#define<\/span> <\/span>MI<\/span> <\/span>330<\/span><\/div>\n
#define<\/span> <\/span>FA<\/span> <\/span>349<\/span><\/div>\n
#define<\/span> <\/span>FAS<\/span> <\/span>370<\/span><\/div>\n
#define<\/span> <\/span>SOL<\/span> <\/span>392<\/span><\/div>\n
#define<\/span> <\/span>SOLS<\/span> <\/span>415<\/span><\/div>\n
#define<\/span> <\/span>LA<\/span> <\/span>440<\/span><\/div>\n
#define<\/span> <\/span>LAS<\/span> <\/span>466<\/span><\/div>\n
#define<\/span> <\/span>SI<\/span> <\/span>494<\/span><\/div>\n

 <\/p>\n

#define<\/span> <\/span>DO2<\/span> <\/span>523<\/span><\/div>\n
#define<\/span> <\/span>DOS2<\/span> <\/span>554<\/span><\/div>\n
#define<\/span> <\/span>RE2<\/span> <\/span>587<\/span><\/div>\n
#define<\/span> <\/span>MI2<\/span> <\/span>659<\/span><\/div>\n
#define<\/span> <\/span>FA2<\/span> <\/span>698<\/span><\/div>\n
#define<\/span> <\/span>SOL2<\/span> <\/span>784<\/span><\/div>\n
#define<\/span> <\/span>LA2<\/span> <\/span>880<\/span><\/div>\n

 <\/p>\n

int<\/span> negra = <\/span>400<\/span>;<\/span><\/div>\n
int<\/span> corchea = <\/span>200<\/span>;<\/span><\/div>\n
int<\/span> blanca = <\/span>800<\/span>;<\/span><\/div>\n

 <\/p>\n

void<\/span> <\/span>tocar<\/span>(<\/span>int<\/span> <\/span>nota<\/span>, <\/span>int<\/span> <\/span>duracion){<\/span><\/div>\n
tone<\/span>(<\/span>speakerPin, nota, duracion<\/span>)<\/span>;<\/span><\/div>\n
delay<\/span>(<\/span>duracion<\/span>)<\/span>;<\/span><\/div>\n
noTone<\/span>(<\/span>speakerPin<\/span>)<\/span>;<\/span><\/div>\n
delay<\/span>(<\/span>30<\/span>)<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n

 <\/p>\n

void<\/span> <\/span>tetris<\/span>(){<\/span><\/div>\n

 <\/p>\n

\/\/ Parte A<\/span><\/div>\n
tocar<\/span>(<\/span>MI2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>SI, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>RE2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>SI, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>LA, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>LA, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>MI2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>RE2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, corchea<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

tocar<\/span>(<\/span>SI, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>SI, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>RE2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>MI2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>LA, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>LA, blanca<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

delay<\/span>(<\/span>200<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

\/\/ Parte B<\/span><\/div>\n
tocar<\/span>(<\/span>RE2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>FA2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>LA2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>SOL2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>FA2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>MI2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>MI2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>RE2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, corchea<\/span>)<\/span>;<\/span><\/div>\n

 <\/p>\n

tocar<\/span>(<\/span>SI, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>SI, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, corchea<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>RE2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>MI2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>DO2, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>LA, negra<\/span>)<\/span>;<\/span><\/div>\n
tocar<\/span>(<\/span>LA, blanca<\/span>)<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n

 <\/p>\n

void<\/span> <\/span>setup<\/span>()<\/span> <\/span>{<\/span><\/div>\n
tetris<\/span>()<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n

 <\/p>\n

void<\/span> <\/span>loop<\/span>()<\/span> <\/span>{<\/span><\/div>\n
}<\/span><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n
\n
\n
Pitido para parlante en el pin 3<\/h5>
#define\u00a0<\/span>speakerPin\u00a03<\/div>\n
void<\/span> <\/span>setup<\/span>()<\/span> <\/span>{<\/span><\/div>\n
\u00a0 <\/span>pinMode<\/span>(<\/span><\/span>speakerPin, OUTPUT<\/span>)<\/span>;<\/span><\/div>\n
\u00a0 <\/span>pitidoAlerta<\/span>()<\/span>;<\/span><\/div>\n
\u00a0 <\/span>pitidoAlerta<\/span>()<\/span>;<\/span><\/div>\n
\u00a0 <\/span>pitidoAlerta<\/span>()<\/span>;<\/span><\/div>\n
}<\/span><\/div>\n
void<\/span> <\/span>loop<\/span>()<\/span> <\/span>{<\/span><\/div>\n
}<\/span><\/div>\n
void<\/span> <\/span>pitidoAlerta<\/span>()<\/span> <\/span>{<\/span><\/div>\n
\u00a0 <\/span>tone<\/span>(<\/span><\/span>speakerPin, <\/span>1000<\/span>, <\/span>200<\/span>)<\/span>;<\/span> \/\/ 1000 Hz por 200 ms<\/span><\/div>\n
\u00a0 <\/span>delay<\/span>(<\/span>250<\/span>)<\/span>;<\/span><\/div>\n
\u00a0 <\/span>noTone<\/span>(<\/span><\/span>speakerPin)<\/span>;<\/span><\/div>\n
\u00a0 <\/span>delay<\/span>(<\/span>250<\/span>)<\/span>;<\/span><\/div>\n
}
<\/span><\/div>\n<\/div><\/div>\n<\/div>\n\n
\n
Robot controlado por bluetooth<\/h5>
\n

#include <SoftwareSerial.h>
SoftwareSerial bluetooth(5,4);\/\/18,19
char letra;
#define pwm_A 11
#define m1A 10
#define m2A 9
#define pwm_B 6
#define m1B 7
#define m2B 8
int velo = 255;
#define spk 3<\/p>\n

void setup () {
bluetooth.begin(9600);\/\/115200
pinMode(m1A,OUTPUT);
pinMode(m2A,OUTPUT);
pinMode(m1B,OUTPUT);
pinMode(m2B,OUTPUT);
pinMode(spk,OUTPUT);
avanzar();
delay(700);
detener();
}<\/p>\n

void loop () {
if (bluetooth.available()){letra = bluetooth.read();}
if(letra=='W'){avanzar();}
if(letra=='S'){reversa();}
if(letra=='A'){derecha();}
if(letra=='D'){izquierda();}
if(letra=='T'){detener();}
if(letra=='1'){velo=0;}
if(letra=='2'){velo=140;}
if(letra=='3'){velo=160;}
if(letra=='4'){velo=200;}
if(letra=='5'){velo=255;}
if(letra=='X'){pitidoAlerta();}
}<\/p>\n

void avanzar(){
analogWrite(pwm_A,velo);
digitalWrite(m1A,HIGH);
digitalWrite(m2A,LOW);
analogWrite(pwm_B,velo);
digitalWrite(m1B,HIGH);
digitalWrite(m2B,LOW);
}<\/p>\n

void detener(){
analogWrite(pwm_A,0);
digitalWrite(m1A,LOW);
digitalWrite(m2A,LOW);
analogWrite(pwm_B,0);
digitalWrite(m1B,LOW);
digitalWrite(m2B,LOW);
}<\/p>\n

void izquierda(){
analogWrite(pwm_A,velo);
digitalWrite(m1A,LOW);
digitalWrite(m2A,HIGH);
analogWrite(pwm_B,velo);
digitalWrite(m1B,HIGH);
digitalWrite(m2B,LOW);
}<\/p>\n

void derecha(){
analogWrite(pwm_A,velo);
digitalWrite(m1A,HIGH);
digitalWrite(m2A,LOW);
analogWrite(pwm_B,velo);
digitalWrite(m1B,LOW);
digitalWrite(m2B,HIGH);
}<\/p>\n

void reversa(){
analogWrite(pwm_A,velo);
digitalWrite(m1A,LOW);
digitalWrite(m2A,HIGH);
analogWrite(pwm_B,velo);
digitalWrite(m1B,LOW);
digitalWrite(m2B,HIGH);
}<\/p>\n

void pitidoAlerta() {
tone(spk, 1000, 200); \/\/ 1000 Hz por 200 ms
delay(250);
noTone(spk);
delay(250);
}<\/p>\n<\/div>\n

<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n
\n
\n
Medir distancia con Ultrasonido<\/h5>
\n

\/\/ ---------- PINES ----------
const int trigPin = 9; \/\/ Trig del sensor ultras\u00f3nico
const int echoPin = 10; \/\/ Echo del sensor ultras\u00f3nico
const int buzzerPin = 8; \/\/ Buzzer
const int ledPin = 7; \/\/ LED<\/p>\n

\/\/ ---------- VARIABLES ----------
long duracion;
int distancia;
unsigned long tiempoAnterior = 0;<\/p>\n

const int DISTANCIA_MAX = 30; \/\/ Distancia (cm) a la que empieza a sonar<\/p>\n

void setup() {
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);
pinMode(buzzerPin, OUTPUT);
pinMode(ledPin, OUTPUT);
Serial.begin(9600);
}<\/p>\n

void loop() {
distancia = medirDistancia();<\/p>\n

\/\/ Ver la distancia en el Monitor Serie
Serial.print(\"Distancia: \");
Serial.print(distancia);
Serial.println(\" cm\");<\/p>\n

if (distancia > 0 && distancia <= DISTANCIA_MAX) {
\/\/ Convierte la distancia en velocidad de pitido:
\/\/ a 30 cm -> pitido cada 500 ms | a 2 cm -> pitido cada 60 ms
int intervalo = map(distancia, 2, DISTANCIA_MAX, 60, 500);
intervalo = constrain(intervalo, 60, 500);<\/p>\n

if (millis() - tiempoAnterior >= (unsigned long)intervalo) {
tiempoAnterior = millis();<\/p>\n

\/\/ Pitido corto + destello del LED
digitalWrite(buzzerPin, HIGH);
digitalWrite(ledPin, HIGH);
delay(60); \/\/ duraci\u00f3n del pitido
digitalWrite(buzzerPin, LOW);
digitalWrite(ledPin, LOW);
}
} else {
\/\/ Fuera de rango: todo apagado
digitalWrite(buzzerPin, LOW);
digitalWrite(ledPin, LOW);
}<\/p>\n

delay(30); \/\/ peque\u00f1a pausa entre lecturas
}<\/p>\n

\/\/ ---------- MEDIR DISTANCIA ----------
int medirDistancia() {
digitalWrite(trigPin, LOW);
delayMicroseconds(2);
digitalWrite(trigPin, HIGH);
delayMicroseconds(10);
digitalWrite(trigPin, LOW);<\/p>\n

duracion = pulseIn(echoPin, HIGH, 30000); \/\/ timeout de 30 ms
return duracion * 0.034 \/ 2; \/\/ conversi\u00f3n a cent\u00edmetros
}<\/p>\n<\/div>\n<\/div><\/div>\n<\/div>\n\n

\n
base<\/h5>

void setup() {<\/p>\n

}<\/p>\n

void loop() {<\/p>\n

}<\/p>\n<\/div><\/div>\n<\/div>\n<\/div>\n<\/div>\n\n

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