Schema de conectare este simpla:
Am folosit doar o citire a senzorului DHT11 cu afisarea temperaturii si umiditatii timp de 3 secunde, apoi orele timp de 10 secunde (ore, minute si secunde):
dupa cum se vede si in filmuletul statie meteo cu DHT11 si ceas cu DS1307 pe afisaj cu 8 cifre din 7 segmente LED
Sketch-ul folosit si scris de mine este:
// adapted sketch by niq_ro from http://arduinotehniq.blogspot.com
// and http://nicuflorica.blogspot.ro
// version 1.0 in 6.11.2014, Craiova - Romanaia
// source for LEDControl: http://embedded-lab.com/blog/?p=6862
#include "LedControl.h"
/*
Now we need a LedControl to work with.
***** These pin numbers will probably not work with your hardware *****
pin 12 is connected to the DataIn
pin 11 is connected to the CLK
pin 10 is connected to LOAD
We have only a single MAX72XX.
*/
LedControl lc=LedControl(12,11,10,1);
// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain
#include "DHT.h"
#define DHTPIN 7 // what pin we're connected to D7
// Uncomment whatever type you're using!
#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
// if is just sensor:
// Connect pin 1 (on the left) of the sensor to +5V
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor
DHT dht(DHTPIN, DHTTYPE);
// decralaration for type of value
int t, h;
// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
// original sketck from http://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit/
// add part with SQW=1Hz from http://tronixstuff.wordpress.com/2010/10/20/tutorial-arduino-and-the-i2c-bus/
#include <Wire.h>
#include "RTClib.h"
RTC_DS1307 RTC;
void setup()
{
// Initialize MAX7219 device
lc.shutdown(0,false); // Enable display
lc.setIntensity(0,11); // Set brightness level (0 is min, 15 is max)
lc.clearDisplay(0); // Clear display register
// Initialize HTD sensor
dht.begin();
Wire.begin();
RTC.begin();
if (! RTC.isrunning()) {
//Serial.println("RTC is NOT running!");
// following line sets the RTC to the date & time this sketch was compiled
RTC.adjust(DateTime(__DATE__, __TIME__));
// part code from http://tronixstuff.wordpress.com/
Wire.beginTransmission(0x68);
Wire.write(0x07); // move pointer to SQW address
Wire.write(0x10); // sends 0x10 (hex) 00010000 (binary) to control register - turns on square wave
Wire.endTransmission();
// end part code from http://tronixstuff.wordpress.com/
}
/*
Serial.begin(9600);
Serial.println("test for niq_ro");
Serial.println("------------------");
*/
}
void loop()
{
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
h = dht.readHumidity();
t = dht.readTemperature();
/* test part
// test humidity value
h = 37;
// test temperature value
t = 19;
*/
//
lc.clearDisplay(0); // Clear display register
temperatura (t);
umiditate (h);
delay(3000);
lc.clearDisplay(0); // Clear display register
for(int j=0; j<10; j++){
DateTime now = RTC.now();
int ora0 = now.hour();
int minut0 = now.minute();
int second0 = now.second();
/*
// serial monitor
Serial.print(now.hour(), DEC);
Serial.print(":");
Serial.print(now.minute(), DEC);
Serial.print(":");
Serial.print(now.second(), DEC);
Serial.print(" -> ");
Serial.print(ora1);
Serial.println(":");
Serial.print(minut1);
Serial.print(":");
Serial.print(second1);
Serial.println("------------------");
*/
ora (ora0, minut0, second0);
delay (900);
}
}
void umiditate (int umidit)
{
int zu = int(umidit/10); // determin cifra zecilor
int uu = umidit - 10*zu; // determin cifra unitatilor
lc.setDigit(0,2,zu, false); // afisez un 5 pe coloana 2
lc.setDigit(0,1,uu, false); // afisez un 0 pe coloana 1
lc.setRow(0,0,B0110111); // afisez litera "H"
}
void temperatura (int temper)
{
int zt = int(temper/10); // determin cifra zecilor
int ut = temper - 10*zt; // determin cifra unitatilor
lc.setDigit(0,7,zt, false); // afisez un 5 pe coloana 7
lc.setDigit(0,6,ut, false); // afisez un 0 pe coloana 1
lc.setRow(0,5,B1100011); // afisez un semn de grad pe coloana 5
lc.setRow(0,4,B1001110); // afisez un C pe coloana 4
}
void ora (int ora1, int minut1, int second1)
{
// hour
int zo = int(ora1/10); // determin cifra zecilor
int uo = ora1 - 10*zo; // determin cifra unitatilor
if (zo >= 1) lc.setDigit(0,7,zo, false); // afisez zecile de ore pe coloana 7 (in stanga)
lc.setDigit(0,6,uo, false); // afisez unitatile de ore pe coloana 6
lc.setRow(0,5,B0000001); // afisez o liniuta pe coloana 5
// minutes
int zm = int(minut1/10); // determin cifra zecilor
int um = minut1 - 10*zm; // determin cifra unitatilor
lc.setDigit(0,4,zm, false); // afisez zecile de minute pe coloana 4
lc.setDigit(0,3,um, false); // afisez unitatile de minute pe coloana 3
lc.setRow(0,2,B0000001); // afisez o liniuta pe coloana 2
// seconds
int zs = int(second1/10); // determin cifra zecilor
int us = second1 - 10*zs; // determin cifra unitatilor
lc.setDigit(0,1,zs, false); // afisez zecile de secunde pe coloana 1
lc.setDigit(0,0,us, false); // afisez unitatile de minute pe coloana 0 (dreapta)
}
Am inlocuit modulul cu senzor DHT11 cu senzorul AM2302 (DHT22), cu precizie mai mare, schema devenind:
Daca senzorul AM2302/DHT22 este montat pe modul (placuta), se monteaza ca modulul ciu DHT11, care are doar 3 pini: VCC la 5V, DATA la pinul de transmisie date, respectiv GND la GND (masa comuna).
In filmuletul statie meteo cu DHT22 si ceas cu DS1307 pe afisaj cu 8 cifre din 7 segmente LED se observa modul de afisare, similar celui cu senzor DHT11:
Sketch-ul folosit, este asemanator celui anterior, cu mici modificari:
// adapted sketch by niq_ro from http://arduinotehniq.blogspot.com
// and http://nicuflorica.blogspot.ro
// version 1.0 in 6.11.2014, Craiova - Romanaia
// source for LEDControl: http://embedded-lab.com/blog/?p=6862
#include "LedControl.h"
/*
Now we need a LedControl to work with.
***** These pin numbers will probably not work with your hardware *****
pin 12 is connected to the DataIn
pin 11 is connected to the CLK
pin 10 is connected to LOAD
We have only a single MAX72XX.
*/
LedControl lc=LedControl(12,11,10,1);
// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain
#include "DHT.h"
#define DHTPIN 7 // what pin we're connected to D7
// Uncomment whatever type you're using!
//#define DHTTYPE DHT11 // DHT 11
#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
// if is just sensor:
// Connect pin 1 (on the left) of the sensor to +5V
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor
DHT dht(DHTPIN, DHTTYPE);
// decralaration for type of value
float t1;
int t, h;
// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
// original sketck from http://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit/
// add part with SQW=1Hz from http://tronixstuff.wordpress.com/2010/10/20/tutorial-arduino-and-the-i2c-bus/
#include <Wire.h>
#include "RTClib.h"
RTC_DS1307 RTC;
void setup()
{
// Initialize MAX7219 device
lc.shutdown(0,false); // Enable display
lc.setIntensity(0,11); // Set brightness level (0 is min, 15 is max)
lc.clearDisplay(0); // Clear display register
// Initialize HTD sensor
dht.begin();
Wire.begin();
RTC.begin();
if (! RTC.isrunning()) {
//Serial.println("RTC is NOT running!");
// following line sets the RTC to the date & time this sketch was compiled
RTC.adjust(DateTime(__DATE__, __TIME__));
// part code from http://tronixstuff.wordpress.com/
Wire.beginTransmission(0x68);
Wire.write(0x07); // move pointer to SQW address
Wire.write(0x10); // sends 0x10 (hex) 00010000 (binary) to control register - turns on square wave
Wire.endTransmission();
// end part code from http://tronixstuff.wordpress.com/
}
/*
Serial.begin(9600);
Serial.println("test for niq_ro");
Serial.println("------------------");
*/
}
void loop()
{
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
h = dht.readHumidity();
t1 = dht.readTemperature();
t1 = 10*t1;
t = t1;
/* test part
// test humidity value
h = 37;
// test temperature value
t = 19;
*/
//
lc.clearDisplay(0); // Clear display register
temperatura (t);
umiditate (h);
delay(3000);
lc.clearDisplay(0); // Clear display register
for(int j=0; j<10; j++){
DateTime now = RTC.now();
int ora0 = now.hour();
int minut0 = now.minute();
int second0 = now.second();
/*
// serial monitor
Serial.print(now.hour(), DEC);
Serial.print(":");
Serial.print(now.minute(), DEC);
Serial.print(":");
Serial.print(now.second(), DEC);
Serial.print(" -> ");
Serial.print(ora1);
Serial.println(":");
Serial.print(minut1);
Serial.print(":");
Serial.print(second1);
Serial.println("------------------");
*/
ora (ora0, minut0, second0);
delay (900);
}
}
void umiditate (int umidit)
{
int zu = int(umidit/10); // determin cifra zecilor
int uu = umidit - 10*zu; // determin cifra unitatilor
lc.setDigit(0,2,zu, false); // afisez un 5 pe coloana 2
lc.setDigit(0,1,uu, false); // afisez un 0 pe coloana 1
lc.setRow(0,0,B0110111); // afisez litera "H"
}
void temperatura (int temper)
{
int st = int(temper/100); // determin cifra sutelor
temper = temper - 100*st; // restul numarului de la zeci si unitati
int zt = int(temper/10); // determin cifra zecilor
int ut = temper - 10*zt; // determin cifra unitatilor
lc.setDigit(0,7,st, false); // afisez un 5 pe coloana 7
lc.setDigit(0,6,zt, true); // afisez un 0 pe coloana 1 si virgula
lc.setDigit(0,5,ut, false); // afisez un 5 pe coloana 7
//lc.setRow(0,5,B1100011); // afisez un semn de grad pe coloana 5
lc.setRow(0,4,B1001110); // afisez un C pe coloana 4
}
void ora (int ora1, int minut1, int second1)
{
// hour
int zo = int(ora1/10); // determin cifra zecilor
int uo = ora1 - 10*zo; // determin cifra unitatilor
if (zo >= 1) lc.setDigit(0,7,zo, false); // afisez zecile de ore pe coloana 7 (in stanga)
lc.setDigit(0,6,uo, false); // afisez unitatile de ore pe coloana 6
lc.setRow(0,5,B0000001); // afisez o liniuta pe coloana 5
// minutes
int zm = int(minut1/10); // determin cifra zecilor
int um = minut1 - 10*zm; // determin cifra unitatilor
lc.setDigit(0,4,zm, false); // afisez zecile de minute pe coloana 4
lc.setDigit(0,3,um, false); // afisez unitatile de minute pe coloana 3
lc.setRow(0,2,B0000001); // afisez o liniuta pe coloana 2
// seconds
int zs = int(second1/10); // determin cifra zecilor
int us = second1 - 10*zs; // determin cifra unitatilor
lc.setDigit(0,1,zs, false); // afisez zecile de secunde pe coloana 1
lc.setDigit(0,0,us, false); // afisez unitatile de minute pe coloana 0 (dreapta)
}
8.11.2014
Pasul urmator
apoi inca 2:
- Arduino weather station & RTC clock with manual adjust on 8 digit led (in engleza mea):
// adapted sketch by niq_ro from http://arduinotehniq.blogspot.com
// and http://nicuflorica.blogspot.ro
// version 1.0 in 7.11.2014, Craiova - Romanaia
// source for LEDControl: http://embedded-lab.com/blog/?p=6862
#include "LedControl.h"
/*
Now we need a LedControl to work with.
***** These pin numbers will probably not work with your hardware *****
pin 12 is connected to the DataIn
pin 11 is connected to the CLK
pin 10 is connected to LOAD
We have only a single MAX72XX.
*/
LedControl lc=LedControl(12,11,10,1);
// Example testing sketch for various DHT humidity/temperature sensors
// Written by ladyada, public domain
#include "DHT.h"
#define DHTPIN 7 // what pin we're connected to D7
// Uncomment whatever type you're using!
//#define DHTTYPE DHT11 // DHT 11
#define DHTTYPE DHT22 // DHT 22 (AM2302)
//#define DHTTYPE DHT21 // DHT 21 (AM2301)
// if is just sensor:
// Connect pin 1 (on the left) of the sensor to +5V
// Connect pin 2 of the sensor to whatever your DHTPIN is
// Connect pin 4 (on the right) of the sensor to GROUND
// Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor
DHT dht(DHTPIN, DHTTYPE);
// decralaration for type of value
float t1;
int t, h;
// Date and time functions using a DS1307 RTC connected via I2C and Wire lib
// original sketck from http://learn.adafruit.com/ds1307-real-time-clock-breakout-board-kit/
// add part with SQW=1Hz from http://tronixstuff.wordpress.com/2010/10/20/tutorial-arduino-and-the-i2c-bus/
#include <Wire.h>
#include "RTClib.h"
RTC_DS1307 RTC;
byte SW0 = A0;
byte SW1 = A1;
byte SW2 = A2;
// use for hexa in zecimal conversion
int zh1, uh1, ore1;
int zm1, um1, miniti1;
void setup()
{
// Initialize MAX7219 device
lc.shutdown(0,false); // Enable display
lc.setIntensity(0,11); // Set brightness level (0 is min, 15 is max)
lc.clearDisplay(0); // Clear display register
// Initialize HTD sensor
dht.begin();
Wire.begin();
RTC.begin();
if (! RTC.isrunning()) {
//Serial.println("RTC is NOT running!");
// following line sets the RTC to the date & time this sketch was compiled
RTC.adjust(DateTime(__DATE__, __TIME__));
// part code from http://tronixstuff.wordpress.com/
Wire.beginTransmission(0x68);
Wire.write(0x07); // move pointer to SQW address
Wire.write(0x10); // sends 0x10 (hex) 00010000 (binary) to control register - turns on square wave
Wire.endTransmission();
// end part code from http://tronixstuff.wordpress.com/
}
pinMode(SW0, INPUT); // for this use a slide switch
pinMode(SW1, INPUT); // N.O. push button switch
pinMode(SW2, INPUT); // N.O. push button switch
digitalWrite(SW0, HIGH); // pull-ups on
digitalWrite(SW1, HIGH);
digitalWrite(SW2, HIGH);
/*
Serial.begin(9600);
Serial.println("test for niq_ro");
Serial.println("------------------");
*/
}
void loop()
{
// Reading temperature or humidity takes about 250 milliseconds!
// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
h = dht.readHumidity();
t1 = dht.readTemperature();
t1 = 10*t1;
t = t1;
/* test part
// test humidity value
h = 37;
// test temperature value
t = 19;
*/
//
lc.clearDisplay(0); // Clear display register
temperatura (t);
umiditate (h);
delay(3000);
lc.clearDisplay(0); // Clear display register
for(int j=0; j<20; j++){
DateTime now = RTC.now();
int ora0 = now.hour();
int minut0 = now.minute();
int second0 = now.second();
/*
// serial monitor
Serial.print(now.hour(), DEC);
Serial.print(":");
Serial.print(now.minute(), DEC);
Serial.print(":");
Serial.print(now.second(), DEC);
Serial.print(" -> ");
Serial.print(ora1);
Serial.println(":");
Serial.print(minut1);
Serial.print(":");
Serial.print(second1);
Serial.println("------------------");
*/
ora (ora0, minut0, second0);
if (!(digitalRead(SW0))) set_time(); // hold the switch to set time
delay (500);
}
}
void umiditate (int umidit)
{
int zu = int(umidit/10); // determin cifra zecilor
int uu = umidit - 10*zu; // determin cifra unitatilor
lc.setDigit(0,2,zu, false); // afisez un 5 pe coloana 2
lc.setDigit(0,1,uu, false); // afisez un 0 pe coloana 1
lc.setRow(0,0,B0110111); // afisez litera "H"
}
void temperatura (int temper)
{
int st = int(temper/100); // determin cifra sutelor
temper = temper - 100*st; // restul numarului de la zeci si unitati
int zt = int(temper/10); // determin cifra zecilor
int ut = temper - 10*zt; // determin cifra unitatilor
lc.setDigit(0,7,st, false); // afisez un 5 pe coloana 7
lc.setDigit(0,6,zt, true); // afisez un 0 pe coloana 1 si virgula
lc.setDigit(0,5,ut, false); // afisez un 5 pe coloana 7
//lc.setRow(0,5,B1100011); // afisez un semn de grad pe coloana 5
lc.setRow(0,4,B1001110); // afisez un C pe coloana 4
}
void ora (int ora1, int minut1, int second1)
{
// hour
int zo = int(ora1/10); // determin cifra zecilor
int uo = ora1 - 10*zo; // determin cifra unitatilor
if (zo >= 1) lc.setDigit(0,7,zo, false); // afisez zecile de ore pe coloana 7 (in stanga)
lc.setDigit(0,6,uo, false); // afisez unitatile de ore pe coloana 6
lc.setRow(0,5,B0000001); // afisez o liniuta pe coloana 5
// minutes
int zm = int(minut1/10); // determin cifra zecilor
int um = minut1 - 10*zm; // determin cifra unitatilor
lc.setDigit(0,4,zm, false); // afisez zecile de minute pe coloana 4
lc.setDigit(0,3,um, false); // afisez unitatile de minute pe coloana 3
lc.setRow(0,2,B0000001); // afisez o liniuta pe coloana 2
// seconds
int zs = int(second1/10); // determin cifra zecilor
int us = second1 - 10*zs; // determin cifra unitatilor
lc.setDigit(0,1,zs, false); // afisez zecile de secunde pe coloana 1
lc.setDigit(0,0,us, false); // afisez unitatile de minute pe coloana 0 (dreapta)
}
void set_time() {
byte minutes1 = 0;
byte hours1 = 0;
byte minutes = 0;
byte hours = 0;
while (!digitalRead(SW0)) // set time switch must be released to exit
{
minutes1=minutes;
hours1=hours;
while (!digitalRead(SW1)) // set minutes
{
minutes++;
// converting hexa in zecimal:
zh1 = hours / 16;
uh1 = hours - 16 * zh1 ;
ore1 = 10 * zh1 + uh1;
zm1 = minutes / 16;
um1 = minutes - 16 * zm1 ;
miniti1 = 10 * zm1 + um1;
lc.clearDisplay(0); // Clear display register
// hour
//int zo = int(ora1/10); // determin cifra zecilor
//int uo = ora1 - 10*zo; // determin cifra unitatilor
if (zh1 >= 1) lc.setDigit(0,7,zh1, false); // afisez zecile de ore pe coloana 7 (in stanga)
lc.setDigit(0,6,uh1, false); // afisez unitatile de ore pe coloana 6
lc.setRow(0,5,B0000001); // afisez o liniuta pe coloana 5
// minutes
//int zm = int(minut1/10); // determin cifra zecilor
//int um = minut1 - 10*zm; // determin cifra unitatilor
lc.setDigit(0,4,zm1, false); // afisez zecile de minute pe coloana 4
lc.setDigit(0,3,um1, false); // afisez unitatile de minute pe coloana 3
lc.setRow(0,2,B0000001); // afisez o liniuta pe coloana 2
// seconds
//int zs = int(second1/10); // determin cifra zecilor
//int us = second1 - 10*zs; // determin cifra unitatilor
lc.setDigit(0,1,0, false); // afisez zecile de secunde pe coloana 1
lc.setDigit(0,0,0, false); // afisez unitatile de minute pe coloana 0 (dreapta)
if ((minutes & 0x0f) > 9) minutes = minutes + 6;
if (minutes > 0x59) minutes = 0;
Serial.print("Minutes = ");
if (minutes >= 9) Serial.print("0");
Serial.println(minutes, HEX);
delay(150);
}
while (!digitalRead(SW2)) // set hours
{
hours++;
// converting hexa in zecimal:
zh1 = hours / 16;
uh1 = hours - 16 * zh1 ;
ore1 = 10 * zh1 + uh1;
zm1 = minutes / 16;
um1 = minutes - 16 * zm1 ;
miniti1 = 10 * zm1 + um1;
lc.clearDisplay(0); // Clear display register
// hour
//int zo = int(ora1/10); // determin cifra zecilor
//int uo = ora1 - 10*zo; // determin cifra unitatilor
if (zh1 >= 1) lc.setDigit(0,7,zh1, false); // afisez zecile de ore pe coloana 7 (in stanga)
lc.setDigit(0,6,uh1, false); // afisez unitatile de ore pe coloana 6
lc.setRow(0,5,B0000001); // afisez o liniuta pe coloana 5
// minutes
//int zm = int(minut1/10); // determin cifra zecilor
//int um = minut1 - 10*zm; // determin cifra unitatilor
lc.setDigit(0,4,zm1, false); // afisez zecile de minute pe coloana 4
lc.setDigit(0,3,um1, false); // afisez unitatile de minute pe coloana 3
lc.setRow(0,2,B0000001); // afisez o liniuta pe coloana 2
// seconds
//int zs = int(second1/10); // determin cifra zecilor
//int us = second1 - 10*zs; // determin cifra unitatilor
lc.setDigit(0,1,0, false); // afisez zecile de secunde pe coloana 1
lc.setDigit(0,0,0, false); // afisez unitatile de minute pe coloana 0 (dreapta)
if ((hours & 0x0f) > 9) hours = hours + 6;
if (hours > 0x23) hours = 0;
Serial.print("Hours = ");
if (hours <= 9) Serial.print("0");
Serial.println(hours, HEX);
delay(150);
}
Wire.beginTransmission(0x68); // activate DS1307
Wire.write(0); // where to begin
Wire.write(0x00); //seconds
Wire.write(minutes); //minutes
Wire.write(0x80 | hours); //hours (24hr time)
Wire.write(0x06); // Day 01-07
Wire.write(0x01); // Date 0-31
Wire.write(0x05); // month 0-12
Wire.write(0x09); // Year 00-99
Wire.write(0x10); // Control 0x10 produces a 1 HZ square wave on pin 7.
Wire.endTransmission();
// converting hexa in zecimal:
zh1 = hours / 16;
uh1 = hours - 16 * zh1 ;
ore1 = 10 * zh1 + uh1;
zm1 = minutes / 16;
um1 = minutes - 16 * zm1 ;
miniti1 = 10 * zm1 + um1;
lc.clearDisplay(0); // Clear display register
// hour
//int zo = int(ora1/10); // determin cifra zecilor
//int uo = ora1 - 10*zo; // determin cifra unitatilor
if (zh1 >= 1) lc.setDigit(0,7,zh1, false); // afisez zecile de ore pe coloana 7 (in stanga)
lc.setDigit(0,6,uh1, false); // afisez unitatile de ore pe coloana 6
lc.setRow(0,5,B0000001); // afisez o liniuta pe coloana 5
// minutes
//int zm = int(minut1/10); // determin cifra zecilor
//int um = minut1 - 10*zm; // determin cifra unitatilor
lc.setDigit(0,4,zm1, false); // afisez zecile de minute pe coloana 4
lc.setDigit(0,3,um1, false); // afisez unitatile de minute pe coloana 3
lc.setRow(0,2,B0000001); // afisez o liniuta pe coloana 2
// seconds
//int zs = int(second1/10); // determin cifra zecilor
//int us = second1 - 10*zs; // determin cifra unitatilor
lc.setDigit(0,1,0, false); // afisez zecile de secunde pe coloana 1
lc.setDigit(0,0,0, false); // afisez unitatile de minute pe coloana 0 (dreapta)
}
}









