2 temperaturi citite cu LM335 transmise prin radio la un afisaj LCD cu 16 coloane si 2 randuri conectat clasic la Arduino
Deoarece m-am gandit ca nu toata lumea foloseste comanda afisajului LCD pe 2 fire (i2c), adica nu are acea interfata, m-am apucat sa conectez afisajul clasic, cu 6 fire utile (si 2 alimentare):
Schema de conectare a modulului de emisie si a celor 2 senzori de temperatura LM335Z la placa Arduino este aceeasi ca cea din articolul anterior:
La partea de receptor, se schimba modul de conectare:
si sa conectez receptorul la pinul 7.. am constatat ca se bloc ca activare apartii de receptor, am conectat si la alti pini si aceeasi eroare, asa ca m-am ami uitat pe documentatia librariei WirtualWre (vezi explicatiile de la skyduino.wordpress.com si mi-am dat seama ca foloseam pinul D11 (digital 11), asa ca am modificat configuratia cum e prezentat mai sus...
Sketch-ul pentru receptor devine:
/*.............................................................
Sending Multiple Variables Using VirtualWire. Receiver
Author: Rodrigo Mompo Redoli
For http://controlrobotics.rodrigomompo.com
adapted sketch by niq_ro (Nicu FLORICA) from http://nicuflorica.blogspot.com
version 5.1
..............................................................*/
#include <LiquidCrystal.h>
LiquidCrystal lcd(7, 6, 5, 4, 3, 2);
/* -------------------
| 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 |
-------------------
*/
#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 t1, t2;
float t10, t20;
char StringReceived[21];
// other
int led = 13; //pin for LED
int j=1; // count the messages
int timp1, timp2, dt; // times
void setup() {
lcd.begin(16, 2); // set up the LCD's number of columns and rows:
// set the time for record time and value
setTime(0,0,0,25,9,13); // set time to Saturday 8:29:00am Jan 1 2011
pinMode(led, OUTPUT);
lcd.print("Arduino is ready"); // print a text
// VirtualWire
// Bits per sec
vw_setup(2000);
// set pin for connect receiver module
vw_set_rx_pin(11);
// Start the receiver PLL running
vw_rx_start();
delay (500);
lcd.clear(); // clear the screen
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 text
delay (2000);
lcd.clear(); // clear the screen
lcd.setCursor(14, 0);
lcd.print("0/");
timp2 = 0;
} // END void setup
void loop(){
uint8_t buf[VW_MAX_MESSAGE_LEN];
uint8_t buflen = VW_MAX_MESSAGE_LEN;
//Taking the data from the control base
if (vw_get_message(buf, &buflen))
{
digitalWrite(led, HIGH);
// put the data number from begin
lcd.clear(); // clear the screen
if (j<10) lcd.setCursor(14, 0); // put cursor at colon 14 and row 1
if ((j>=10) and (j<100)) lcd.setCursor(13, 0); // put cursor at colon 13 and row 1
if ((j>=100) and (j<1000)) lcd.setCursor(12, 0); // put cursor at colon 12 and row 1
if ((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 array
digitalWrite(led, LOW);
t1 = Sensor1Data;
t2 = Sensor2Data;
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);
lcd.setCursor(0, 0);
lcd.print("t1=");
if (t10<10) lcd.print(" ");
if (t10>0.0) lcd.print("+");
lcd.print(t10,1);
lcd.write(0b11011111);
lcd.print("C");
lcd.setCursor(0, 1);
lcd.print("t2=");
if (t20<10) lcd.print(" ");
if (t20>0.0) lcd.print("+");
lcd.print(t20,1);
lcd.write(0b11011111);
lcd.print("C");
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 1
if ((dt>=10) and (dt<100)) lcd.setCursor(13, 1); // put cursor at colon 13 and row 1
if ((dt>=100) and (dt<1000)) lcd.setCursor(12, 1); // put cursor at colon 12 and row 1
if ((dt>=1000) and (dt<10000)) lcd.setCursor(11, 1); // put cursor at colon 11 and row 1
lcd.print(dt);
lcd.print("s");
}
Am facut is un mic filmulet, numit two LM335 temperature transmission to a display wirelessly using Arduino (II):
Niciun comentariu:
Trimiteți un comentariu