si m-am gandit sa fac un "indicator de confort", sa zic asa, adica voi aprinde LED-ul albastru cand este temperatura mai scazuta decat 19 grade Celsius, pe cel verde cand este intre 19 si 26 grade, iar cel rosu daca temperatura este mai mare de 26 grade Celsius.
Schema de conectare este simpla, combinatia celei de masurare:
cu cea de afisare cu LED multicolor (RGB):
Sketch-ul deriva din cel de masurare a 2 temperaturi:
/*
original sketch by niq_ro (Nicu FLORICA) from http://nicuflorica.blogspot.comversion 1.6program original scris de mine (niq_ro) versiunea 1.6..............................................................*/
#include <LiquidCrystal.h>
// folosesc libraria pentru afisaje LCD simpleLiquidCrystal lcd(7, 6, 5, 4, 3, 2);
// indic modul de legare, vezi mai jos:/* ------------------- | LCD | Arduino | ------------------- LCD RS pin to digital pin 7 | RS | D7 | LCD Enable pin to digital pin 6 | E | D6 | LCD D4 pin to digital pin 5 | D4 | D5 | LCD D5 pin to digital pin 4 | D5 | D4 | LCD D6 pin to digital pin 3 | D6 | D3 | LCD D7 pin to digital pin 2 | D7 | D2 | LCD R/W pin to ground | R/W | GND | -------------------*/// http://arduino.cc/en/Reference/LiquidCrystalCreateCharbyte home13[8] = {
B00011,
B00100,
B01000,
B11111,
B01000,
B01000,
B01111,
};
byte home23[8] = {
B00000,
B10110,
B01110,
B11111,
B00100,
B00100,
B11100,
};
byte home33[8] = {
B00011,
B10110,
B01110,
B11111,
B00100,
B00100,
B11100,
};
byte home03[8] = {
B11111,
B00000,
B00000,
B11111,
B00000,
B00000,
B11111,
};
byte grad[8] = {
B01100,
B10010,
B10010,
B01100,
B00000,
B00000,
B00000,
};
byte copac12[8] = {
B00111,
B01000,
B10101,
B10010,
B01000,
B00111,
B00001,
B00001,
};
byte copac22[8] = {
B11000,
B00110,
B10101,
B01001,
B00010,
B11100,
B10000,
B10000,
};
// variables // variabile int t1, t2;
float t10, t20;
float t11, t21;
float t12, t22;
int temperaturePin1 = A0; // output from first LM335 is put at analog input no.0int temperaturePin2 = A1; // output from second LM335 is put at analog input no.1// cei 2 senzori de temperaturia LM335 sunt legati la pinii A0 si A1// other int led = 13; //pin for LEDint ledr = 11; //pin for red LEDint leda = 10; //pin for blue LEDint ledv = 9; //pin for green LEDvoidsetup() {
lcd.createChar(0, grad);
lcd.createChar(1, home13);
lcd.createChar(2, home23);
lcd.createChar(3, home33);
lcd.createChar(4, home03);
lcd.createChar(5, copac12);
lcd.createChar(6, copac22);
lcd.begin(16, 2); // set up the LCD's number of columns and rows: pinMode(led, OUTPUT);
lcd.clear(); // clear the screen
lcd.setCursor(0, 0); // put cursor at colon 2 and row 0 = left/up
lcd.print("dual thermometer"); // print a text
lcd.setCursor(1, 1); // put cursor at colon 0 and row 0 = left/down
lcd.print("1.6 by niq_ro"); // print a textdelay (2000);
lcd.clear(); // clear the screen
} // END void setupvoidloop(){
digitalWrite(led, HIGH);
// Read and store Sensor Data
t11=0;
t21=0;
//lcd.clear(); // clear the screenfor (int x=1; x <= 5; x++)
{
// calculate the value
t1 = analogRead(temperaturePin1); // read value from temperature from first sensor (LM335);
t10 = 100.0*(5.0*t1/1023-2.980)+25.0;
t11 = t10 + t11;
t2 = analogRead(temperaturePin2); // read value from temperature from second sensor (LM335);
t20 = 100.0*(5.0*t2/1023-2.980)+25.0;
t21 = t20 + t21;
delay (500);
}
t12 = t11/5.0 -2.0 ; // average and corrected temperature
t22 = t21/5.0 -1.0; // average and corrected temperature /*t1 = analogRead(temperaturePin1); // read value from temperature from first sensor (LM335);t2 = analogRead(temperaturePin2); // read value from temperature from first sensor (LM335);t10 = (100.0*(5.0*t1/1023.0-2.980)+25.0)-1.0;t20 = (100.0*(5.0*t2/1023.0-2.980)+25.0);*/analogWrite(ledr, 0);
analogWrite(leda, 0);
analogWrite(ledv, 0);
lcd.setCursor(3, 0);
lcd.write(byte(1));
// lcd.write(byte(4));
lcd.write(byte(3));
lcd.print(":");
// lcd.print("t1="); if (t12<10) lcd.print(" ");
if (t12>0.0) lcd.print("+");
lcd.print(t12,1);
// lcd.write(0b11011111);
lcd.write(byte(0));
lcd.print("C");
lcd.setCursor(3, 1);
// lcd.print("ext:");
lcd.write(byte(5));
lcd.write(byte(6));
lcd.print(":");
// lcd.print("t2="); if (t22<10) lcd.print(" ");
if (t22>0.0) lcd.print("+");
lcd.print(t22,1);
// lcd.write(0b11011111);
lcd.write(byte(0));
lcd.print("C");
digitalWrite(led, LOW);
// temperature leds indicatorif (t12<=19.0) analogWrite(leda, 255);
if ((t12>19.0) and (t12<26.0)) analogWrite(ledv, 255);
if (t12>=26.0) analogWrite(ledr, 255);
delay(500);
lcd.setCursor(4, 0);
lcd.write(byte(2));
}
date transmise prin radio la un afisaj LCD cu 16 coloane si 2 randuri conectat prin modul i2c la Arduino
In continuarea celor 2 parti, voi arata valorile primite de la emitator pe un afisaj LCD 16x2 (1602 = 16 coloane si 2 randuri, care este conectat la placa Arduino prin intermediul modului i2c. Schema de conectare este:
Vreau sa afisez cele 4 valori numerice, numarul pachetului de date si timpul dintre pachetul de date si pana apare urmatorul... pentru a stii daca-s probleme de receptie:
Am adaptat si scris urmatorul sketch pentru receptor:
/*.............................................................Sending Multiple Variables Using VirtualWire. ReceiverAuthor: Rodrigo Mompo RedoliFor http://controlrobotics.rodrigomompo.comadapted sketch by niq_ro (Nicu FLORICA) from http://nicuflorica.blogspot.com..............................................................*/
#include <Wire.h> // use Wire library for protocol i2c (A4 = SDA & A5 = SCL)
#include <LiquidCrystal_I2C.h> // use LiquidCrystal_I2C library for control LCD on i2c protocolLiquidCrystal_I2C lcd(0x20,16,2); // 0x20 is adresss for LCC 16x2
#include <VirtualWire.h> // use Virtual library for decode signal from Rx module
#include <Time.h> // use Time library for control the time between data from receiver// Sensors int Sensor1Data;
int Sensor2Data;
int Sensor3Data;
int Sensor4Data;
char StringReceived[22];
// other int led = 13; //pin for LEDint j=1; // count the messagesint timp1, timp2, dt; // times voidsetup() {
lcd.init(); // initialing the LCD display
lcd.backlight(); //backlight is now ON
lcd.begin(16, 2); // set up the LCD's number of columns and rows: // set the time for record time and valuesetTime(0,0,0,25,9,13); // set time to Saturday 8:29:00am Jan 1 2011pinMode(led, OUTPUT);
// VirtualWire // Bits per secvw_setup(2000);
// set pin for connect receiver module vw_set_rx_pin(7);
// Start the receiver PLL runningvw_rx_start();
lcd.setCursor(1, 0); // put cursor at colon 2 and row 0 = left/up
lcd.print("niq_ro's rx is"); // print a text
lcd.setCursor(1, 1); // put cursor at colon 0 and row 0 = left/down
lcd.print("ready on 433MHz"); // print a textdelay (2000);
lcd.clear(); // clear the screenlcd.print(14, 0);
lcd.print("0/");
timp2 = 0;
} // END void setupvoidloop(){
uint8_t buf[VW_MAX_MESSAGE_LEN];
uint8_t buflen = VW_MAX_MESSAGE_LEN;
//Taking the data from the control baseif (vw_get_message(buf, &buflen))
{
digitalWrite(led, HIGH);
// put the data number from begin
lcd.clear(); // clear the screenif (j<10) lcd.setCursor(14, 0); // put cursor at colon 14 and row 1if ((j>=10) and (j<100)) lcd.setCursor(13, 0); // put cursor at colon 13 and row 1if ((j>=100) and (j<1000)) lcd.setCursor(12, 0); // put cursor at colon 12 and row 1if ((j>=1000) and (j<10000)) lcd.setCursor(11, 0); // put cursor at colon 11 and row 1
lcd.print(j);
lcd.print("/");
int i;
// Message with a good checksum received, dump it. for (i = 0; i < buflen; i++)
{
// Fill Sensor1CharMsg Char array with corresponding // chars from buffer.
StringReceived[i] = char(buf[i]);
// Serial.print(StringReceived[i]);
}
sscanf(StringReceived, "%d,%d,%d,%d,%d,%d",&Sensor1Data, &Sensor2Data,&Sensor3Data,&Sensor4Data); // Converts a string to an arraydigitalWrite(led, LOW);
lcd.setCursor(0, 0);
lcd.print(Sensor1Data);
lcd.print("&");
lcd.print(Sensor2Data);
lcd.print("&");
lcd.setCursor(0, 1);
lcd.print(Sensor3Data);
lcd.print("&");
lcd.print(Sensor3Data);
timp2 = timp1; // new time replace olt time;
j=j++; // count the message
memset( StringReceived, 0, sizeof( StringReceived));// This line is for reset the StringReceived
}
// calculate time from last data received
timp1 = hour()*3600 + minute()*60 + second();
dt = timp1-timp2;
if (dt<10) lcd.setCursor(14, 1); // put cursor at colon 14 and row 1if ((dt>=10) and (dt<100)) lcd.setCursor(13, 1); // put cursor at colon 13 and row 1if ((dt>=100) and (dt<1000)) lcd.setCursor(12, 1); // put cursor at colon 12 and row 1if ((dt>=1000) and (dt<10000)) lcd.setCursor(11, 1); // put cursor at colon 11 and row 1
lcd.print(dt);
lcd.print("s");
}
Pentru emitator am folosit tot sketch-ul prezentat la finalul primei parti.
Daca tot am ajuns sa folosesc LCD-ul, am mers mai departe si am conectat la emitator senzorul DHT11 care masoara temperatura si umiditatea, similar cu articolul Ministatie meteo cu senzorul DHT11 si.. Arduino, doar ca acum o sa fie "uairles" (wireless), adica fara fir...
Sending Multiple Variables Using VirtualWire. TransmitterAuthor: Rodrigo Mompo RedoliFor controlrobotics.rodrigomompo.comadapted sketch by niq_ro (Nicu FLORICA) from http://nicuflorica.blogspot.com..............................................................*/
#include <VirtualWire.h>
#include "DHT.h"
#define DHTPIN A2 // what pin we're connected to
#define DHTTYPE DHT11 // DHT 11
DHT dht(DHTPIN, DHTTYPE);
int ledPin = 13;
char Sensor1CharMsg[21];// The string that we are going to send trought rf voidsetup() {
dht.begin(); // initialing the DHT sensor// LED pinMode(ledPin,OUTPUT);
// VirtualWire setup
vw_setup(2000); // Bits per sec
vw_set_tx_pin(12);// Set the Tx pin. Default is 12
}
voidloop() {
digitalWrite(ledPin, HIGH);
// Read and store Sensor Dataint Sensor1Data = dht.readHumidity();
int Sensor2Data = dht.readTemperature();;
sprintf(Sensor1CharMsg, "%d,%d", Sensor1Data, Sensor2Data);
// Turn on a light to show transmitting
vw_send((uint8_t *)Sensor1CharMsg, strlen(Sensor1CharMsg));
vw_wait_tx(); // Wait until the whole message is gone// Turn off a light after transmissiondelay(100);
digitalWrite(ledPin, LOW);
delay(3000);
}
- pentru receptor:
/*.............................................................Sending Multiple Variables Using VirtualWire. ReceiverAuthor: Rodrigo Mompo RedoliFor http://controlrobotics.rodrigomompo.comadapted sketch by niq_ro (Nicu FLORICA) from http://nicuflorica.blogspot.com..............................................................*/
#include <Wire.h> // use Wire library for protocol i2c (A4 = SDA & A5 = SCL)
#include <LiquidCrystal_I2C.h> // use LiquidCrystal_I2C library for control LCD on i2c protocol
LiquidCrystal_I2C lcd(0x20,16,2); // 0x20 is adresss for LCC 16x2
#include <VirtualWire.h> // use Virtual library for decode signal from Rx module
#include <Time.h> // use Time library for control the time between data from receiver// Sensors int Sensor1Data;
int Sensor2Data;
int h, t;
char StringReceived[21];
// other int led = 13; //pin for LEDint j=1; // count the messagesint timp1, timp2, dt; // times voidsetup() {
lcd.init(); // initialing the LCD display
lcd.backlight(); //backlight is now ON
lcd.begin(16, 2); // set up the LCD's number of columns and rows: // set the time for record time and valuesetTime(0,0,0,25,9,13); // set time to Saturday 8:29:00am Jan 1 2011pinMode(led, OUTPUT);
// VirtualWire // Bits per sec
vw_setup(2000);
// set pin for connect receiver module
vw_set_rx_pin(7);
// Start the receiver PLL running
vw_rx_start();
lcd.setCursor(1, 0); // put cursor at colon 2 and row 0 = left/up
lcd.print("niq_ro's rx is"); // print a text
lcd.setCursor(1, 1); // put cursor at colon 0 and row 0 = left/down
lcd.print("ready on 433MHz"); // print a textdelay (2000);
lcd.clear(); // clear the screen
lcd.setCursor(14, 0);
lcd.print("0/");
timp2 = 0;
} // END void setupvoidloop(){
uint8_t buf[VW_MAX_MESSAGE_LEN];
uint8_t buflen = VW_MAX_MESSAGE_LEN;
//Taking the data from the control baseif (vw_get_message(buf, &buflen))
{
digitalWrite(led, HIGH);
// put the data number from begin
lcd.clear(); // clear the screenif (j<10) lcd.setCursor(14, 0); // put cursor at colon 14 and row 1if ((j>=10) and (j<100)) lcd.setCursor(13, 0); // put cursor at colon 13 and row 1if ((j>=100) and (j<1000)) lcd.setCursor(12, 0); // put cursor at colon 12 and row 1if ((j>=1000) and (j<10000)) lcd.setCursor(11, 0); // put cursor at colon 11 and row 1
lcd.print(j);
lcd.print("/");
int i;
// Message with a good checksum received, dump it. for (i = 0; i < buflen; i++)
{
// Fill Sensor1CharMsg Char array with corresponding // chars from buffer.
StringReceived[i] = char(buf[i]);
// Serial.print(StringReceived[i]);
}
sscanf(StringReceived, "%d,%d",&Sensor1Data, &Sensor2Data); // Converts a string to an arraydigitalWrite(led, LOW);
h = Sensor1Data;
t = Sensor2Data;
/*lcd.setCursor(0, 0);lcd.print(Sensor1Data);lcd.print("&");lcd.print(Sensor2Data);lcd.print("&");lcd.setCursor(0, 1);//lcd.print(Sensor3Data);//lcd.print("&");//lcd.print(Sensor3Data);*/
lcd.setCursor(0, 0);
lcd.print("temp=");
lcd.print(t);
lcd.write(0b11011111);
lcd.print("C");
lcd.setCursor(0, 1);
lcd.print("umid=");
lcd.print(h);
lcd.print("%");
timp2 = timp1; // new time replace olt time;
j=j++; // count the message
memset( StringReceived, 0, sizeof( StringReceived));// This line is for reset the StringReceived
}
// calculate time from last data received
timp1 = hour()*3600 + minute()*60 + second();
dt = timp1-timp2;
if (dt<10) lcd.setCursor(14, 1); // put cursor at colon 14 and row 1if ((dt>=10) and (dt<100)) lcd.setCursor(13, 1); // put cursor at colon 13 and row 1if ((dt>=100) and (dt<1000)) lcd.setCursor(12, 1); // put cursor at colon 12 and row 1if ((dt>=1000) and (dt<10000)) lcd.setCursor(11, 1); // put cursor at colon 11 and row 1
lcd.print(dt);
lcd.print("s");
}
Deoarece am avut un pic timp liber, am reusit sa finalizez, in mare masura, placa mea Arduino (mai lipseste stabilizatorul de tensiune de 5V si mufa de alimentare, dar o sa folosesc tensiunea de 5V din USB)...
Dupa alimentare, LED-ul conectat la pinul 13 a inceput sa clipeasca, deci partea de alimentare e ok..
Dupa asta am modificat un pic sketch-ul BLINK din exemple, sa para ceva mai "far" si pentru a incarca, am tinut apasat butonul de RESET si am dat "Incarcare", dupa cca. 3 secunde am eliberat butonul de RESET si am asteptat sa apara mesajul de "Incarcare finalizata" si .. gata,e ok. De retinut ca daca se tine prea mult sau prea putin timp apasat butonul de RESET, pot apare erori si nu se scrie acel sketch, dar.. urmarim indicatiile programului (sa nu apara linii scrise cu rosu la final)... - eroare de incarcare a unui sketch:
Primul programior (sketch) pe care l-am testat este "ReadWrite", cel in care se creeaza un fisier text, se scrie in el ceva, se salveaza, apoi se deschide si se citeste textul..
am modificat repede textul de scris, obtinand:
Am deschis si programiorul din exemplele librariei SD, numit "CardInfo":
Avand deja realizata partea de indicare pe ecranul LCD 16x2 a temperaturii si umiditatatii oferite de senzorul DTH11, a orei si datei oferite de ceasul de timp real DS1307, am conectat si placa de retea care are si inscriptor de memorie microSD.
Dupa combinarea mai multor sketch-uri si ceva "sudoare", am realizat partea de scriere pe monitorizarea seriala si intr-un fisier pe cardul de memorie microSD:
Sketch-ul meu este:
// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
Dupa ce am lasat conectat montajul mai multe ore, am constatat uneori ca apar erori la citirea datelor din RTC (ore si minute) si apoi la scriere, m-am gandit e cam mare consumul, asa ca am inlocuit cablul usb cu prelungitor cu un cablu de cca. 1m de la un scanner si, totodata, sting lumina de fundal al afisajului cu cristale lichide cand se face scrierea...
O alta solutie, pentru reducerea consumului, este aceea in care sa folosesc doar un modul de microSD...
Sketch-ul modificat este:
// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
