arduino 教學

led 顯示

const byte pin[]={0,1,2,3,4,5,6,7}; //宣告Ppin接腳為arduino 0,1,2,3,4,5,6,7

int i,j; //宣告變數名稱a,b

const int sw0=8; //switch pin

int value; //read switch pulse

void setup() {

// put your setup code here, to run once:

for(i=0;i<8;i++) //宣告led接腳0~7為輸出

{

pinMode(pin[i],OUTPUT);

}

pinMode(sw0,INPUT); //宣告指撥開關sw0為輸入

}

void loop() {

// put your main code here, to run repeatedly:

for(i=0;i<8;i++) //宣告led全部關閉

{

digitalWrite(pin[i],HIGH);

}

//---

for(i=0;i<8;i++) //宣告led全部亮

{

digitalWrite(pin[i],LOW);

}

delay(1000); //延遲1秒

for(i=0;i<8;i++) //宣告led全部關閉

{

digitalWrite(pin[i],HIGH);

}

delay(1000); //延遲1秒

//--

value=digitalRead(sw0); //宣告value讀取指撥開關sw0的訊號

if(value==HIGH) //指撥開關撥上去

{

for(j=0;j<10;j++) //跑馬燈run 10次

{

for(i=0;i<8;i++) //跑馬燈 code

{

digitalWrite(pin[i],LOW);

delay(500);

digitalWrite(pin[i],HIGH);

}

}

}

}

3個sw 功能顯示

const byte pin_led[]={2,3,4,5,6,7,8,9};

const byte sw0=10; // #define sw0 10

const byte sw1=11;

const byte sw2=12;

//--

int i,j=0,m=0,dir=0,k=0;

int val,val1,val2;

//--

void setup() {

// put your setup code here, to run once:

//--第1種方式宣告

//DDRD=B11111111; // 1-Output 0-input

//--第2種方式宣告

for(i=0;i<8;i++)

{

pinMode(pin_led[i],OUTPUT); //2-9 ==>OUTPUT

}

pinMode(sw0,INPUT);

pinMode(sw1,INPUT);

pinMode(sw2,INPUT);

//--初始宣告全部關閉

for(i=0;i<8;i++)

{

digitalWrite(pin_led[i],LOW);

}

}

void loop() {

// put your main code here, to run repeatedly:

//----判斷讀取按鈕訊號

val=digitalRead(sw0);

val1=digitalRead(sw1);

val2=digitalRead(sw2);

// if(val==HIGH) { val ==LOW;delay(20);m=1; }

// if(val1==HIGH){ val1==LOW;delay(20);m=2; }

// if(val2==HIGH){ val1==LOW;delay(20);m=3; }

if(val==1) {(val==0);delay(10);m=1; }

if(val1==1){(val1==0);delay(10);m=2; }

if(val2==1){(val1==0);delay(10);m=3; }

//--left LED run

if(m==0)

{

digitalWrite(pin_led[k],HIGH);

delay(500);

digitalWrite(pin_led[k],LOW);

k++;

if(k>7)

k=0;

}

//---right led run

if(m==1)

{

digitalWrite(pin_led[k],HIGH);

delay(500);

digitalWrite(pin_led[k],LOW);

k--;

if(k<0)

{ k=7;

j++;

if(j>4)

{j=0;m=0;}}

}

//--on-off

if(m==2)

{

k++;

if(k>9)

k=0;

//--

for(j=0;j<8;j++)

{

digitalWrite(pin_led[j],HIGH);

}

delay(500);

for(j=0;j<8;j++)

{

digitalWrite(pin_led[j],LOW);

}

delay(500);

for(j=0;j<8;j++)

{

digitalWrite(pin_led[j],HIGH);

}

//--

}

//--left-right

if(m==3)

{

digitalWrite(pin_led[k],HIGH);

delay(500);

digitalWrite(pin_led[k],LOW);

if(dir==0)

{

k++;

if(k>6)

dir=1;

}

else

{

k--;

if(k<=0)

{dir=0;

j++;

if(j>4)

{j=0;m=0;}

}

}

}

}

0000-9999 計數功能顯示

const char num[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; //顯示0-9的資料

const int seg[]={0,1,2,3,4,5,6,7}; //data的接腳宣告

const int scan[]={8,9,10,11};

int i,k,Value=0,number;

unsigned long time=0;

void setup() {

// put your setup code here, to run once:

for(i=0;i<8;i++)

pinMode(seg[i],OUTPUT);

//---

for(k=0;k<4;k++)

{

pinMode(scan[k],OUTPUT);

digitalWrite(scan[k],HIGH);

}

//--

}

void loop() {

// put your main code here, to run repeatedly:

//----7seg dispaly

number=Value;

for(i=0;i<8;i++)

digitalWrite(seg[i],LOW); // 關閉7段顯示器--消除殘影

for(k=0;k<4;k++)

{

for(i=0;i<8;i++) //data

{

if(bitRead(num[number%10],i)) //read array data

digitalWrite(seg[i],HIGH);

else

digitalWrite(seg[i],LOW);

}

digitalWrite(scan[k],0);

delay(5);

digitalWrite(scan[k],1);

number=number/10;

if(millis()-time>=10)

{

time=millis();

Value=Value+1;

if(Value>9999)

Value=0;

}

//---

}

}

超音波距離感測顯示

#define trig1 A1

#define echo1 A0

float value,value1;

void setup() {

// put your setup code here, to run once:

Serial.begin(9600);

pinMode(trig1,OUTPUT); //傳送 chip

pinMode(echo1,INPUT); //接收 chip

//--

pinMode(12,OUTPUT); //led red

digitalWrite(12,LOW); //led off

pinMode(13,OUTPUT); //pz green

digitalWrite(13,LOW); //pz off

}

void loop() {

// put your main code here, to run repeatedly:

//---HC_SR04 主程式

digitalWrite(trig1,HIGH);

delayMicroseconds(10); //1us*10=10us

digitalWrite(trig1,LOW);

value=pulseIn(echo1,HIGH);

value1=value/58;

Serial.print("distance=");

Serial.print(value1,2);

Serial.println(" cm");

delay(5000); //1ms*1000=1s

}

0-F 顯示

const

unsigned char NUMBER[17] =

{

0x3F, // --0--

0x06, // --1--

0x5B, // --2--

0x4F, // --3--

0x66, // --4--

0x6D, // --5--

0x7D, // --6--

0x07, // --7--

0x7F, // --8--

0x6F, // --9--

0x77, // --A--

0x7C, // --B--

0x39, // --C--

0x5E, // --D--

0x79, // --E--

0x71, // --F--

0x80, // --:--

};

const int seg_pin[]={22,23,24,25,26,27,28,29};

const int scan[]={30,31,32,33};

int i,j,m;

void setup() {

// put your setup code here, to run once:

for(i=0;i<8;i++)

{

pinMode(seg_pin[i],OUTPUT);

digitalWrite(seg_pin[i],HIGH);

}

for(j=0;j<4;j++)

{

pinMode(scan[j],OUTPUT);

digitalWrite(scan[j],HIGH);

}

}

void loop() {

// put your main code here, to run repeatedly:

//

// digitalWrite(30,LOW);

// digitalWrite(22,LOW);

for(j=0;j<4;j++)

digitalWrite(scan[j],HIGH);

digitalWrite(scan[0],LOW);

delay(1);

for(m=0;m<17;m++)

{

for(i=0;i<8;i++)

{

if(bitRead(~NUMBER[m],i))

digitalWrite(seg_pin[i],HIGH);

else

digitalWrite(seg_pin[i],LOW);

}

delay(500);

}

}

溫濕度顯示

#include "DHT11.h"

DHT11 dht(2);

float humidity,temp;

void setup() {

// put your setup code here, to run once:

Serial.begin(9600);

//--

}

void loop() {

// put your main code here, to run repeatedly:

int value=dht.read(humidity,temp);

if(value==0) //DHT11 on

{

Serial.print("現在濕度(humidity):");

Serial.print(humidity);

Serial.println("%");

Serial.println("//---");

Serial.print("現在溫度(temperature):");

Serial.print(temp);

// Serial.print((char)0xDf); //顯示度

Serial.println("*C");

delay(1000);

}

}

溫濕度顯示在lcd

#include "DHT11.h"

#include <Wire.h>

#include "LiquidCrystal_I2C.h"

DHT11 dht(2);

float humidity,temp;

LiquidCrystal_I2C lcd(0x27,16,2);

#define pz_pin 11

int statu=1;

void DTH(void);

void setup() {

// put your setup code here, to run once:

Serial.begin(9600);

pinMode(pz_pin,OUTPUT);

digitalWrite(pz_pin,LOW); //noTone(pz_pin);

lcd.init();

lcd.backlight();

}

void DTH(void){

int value=dht.read(humidity,temp);

//if(int value=dht.read(humidity,temp)==0)

if(value==0) //data 啟動傳輸讀取

{

Serial.print("現在濕度:");

Serial.println(humidity,2);

Serial.print("%\n");

//---

Serial.print("現在溫度:");

Serial.print(temp,2);

// Serial.print((char)0xDf); //顯示度

Serial.print("*C\n");

//---

/*

lcd.setCursor(0,0); //col-x=0 row-y=0

lcd.print("humidity: ");

lcd.print(humidity,1);

lcd.print(" %"); //col-x=0 row-y=1

lcd.setCursor(0,1);

lcd.print("temp: ");

lcd.print(temp,1);

lcd.print(" *C");

*/

}

delay(1000);

if(humidity>=40)

{

tone(pz_pin,500);

delay(100);

tone(pz_pin,300);

delay(100);

}

else

noTone(pz_pin);

}

void loop() {

// put your main code here, to run repeatedly:

//int value=dht.read(dataPin);

if(statu==1)

{

DTH();

}

delay(2000);

}