Adaptorul meu arata asa:
Adaptorul lui Cristi arata asa:
Dupa ce m-am chinuit si si eu cu el un pic si Cristi si-a luat altul care facea la fel.. partea "ciudata" era ca la rularea programului de gasire a adresei aparea ca fiind 0x27...
Sketch-ul de depistare a adresei celor conectati la interfata i2c se gaseste la http://playground.arduino.cc/Main/I2cScanner.
// --------------------------------------
// i2c_scanner
//
// Version 1
// This program (or code that looks like it)
// can be found in many places.
// For example on the Arduino.cc forum.
// The original author is not know.
// Version 2, Juni 2012, Using Arduino 1.0.1
// Adapted to be as simple as possible by Arduino.cc user Krodal
// Version 3, Feb 26 2013
// V3 by louarnold
// Version 4, March 3, 2013, Using Arduino 1.0.3
// by Arduino.cc user Krodal.
// Changes by louarnold removed.
// Scanning addresses changed from 0...127 to 1...119,
// according to the i2c scanner by Nick Gammon
// http://www.gammon.com.au/forum/?id=10896
// Version 5, March 28, 2013
// As version 4, but address scans now to 127.
// A sensor seems to use address 120.
//
//
// This sketch tests the standard 7-bit addresses
// Devices with higher bit address might not be seen properly.
//
#include <Wire.h>
void setup()
{
Wire.begin();
Serial.begin(9600);
Serial.println("\nI2C Scanner");
}
void loop()
{
byte error, address;
int nDevices;
Serial.println("Scanning...");
nDevices = 0;
for(address = 1; address < 127; address++ )
{
// The i2c_scanner uses the return value of
// the Write.endTransmisstion to see if
// a device did acknowledge to the address.
Wire.beginTransmission(address);
error = Wire.endTransmission();
if (error == 0)
{
Serial.print("I2C device found at address 0x");
if (address<16)
Serial.print("0");
Serial.print(address,HEX);
Serial.println(" !");
nDevices++;
}
else if (error==4)
{
Serial.print("Unknow error at address 0x");
if (address<16)
Serial.print("0");
Serial.println(address,HEX);
}
}
if (nDevices == 0)
Serial.println("No I2C devices found\n");
else
Serial.println("done\n");
delay(5000); // wait 5 seconds for next scan
}
// http://arduinoinfo.info/
/* YourDuino.com Example Software Sketch
20 character 4 line I2C Display or 16 character 2 line I2C Display
ANOTHER NEW TYPE Marked "LCM1602 IIC A0 A1 A2"
A0-A1-A2 are grounded so I2C Address is 0x20
terry@yourduino.com */
/*-----( Import needed libraries )-----*/
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h> // F Malpartida's NewLiquidCrystal library
//Download: https://bitbucket.org/fmalpartida/new-liquidcrystal/downloads
// Move original LiquidCrystal library elsewhere, copy this in it's place
/*-----( Declare Constants )-----*/
#define I2C_ADDR 0x27 // Define I2C Address for the PCF8574T
//---(Following are the PCF8574 pin assignments to LCD connections )----
// This are different than earlier/different I2C LCD displays
#define BACKLIGHT_PIN 3
#define En_pin 2
#define Rw_pin 1
#define Rs_pin 0
#define D4_pin 4
#define D5_pin 5
#define D6_pin 6
#define D7_pin 7
#define LED_OFF 1
#define LED_ON 0
/*-----( Declare objects )-----*/
LiquidCrystal_I2C lcd(I2C_ADDR,En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
void setup() /*----( SETUP: RUNS ONCE )----*/
{
// lcd.begin (20,4); // initialize the lcd
lcd.begin (16,2); // initialize the lcd
// Switch on the backlight
lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
lcd.setBacklight(LED_ON);
}// END Setup
void loop() /*----( LOOP: RUNS OVER AND OVER AGAIN )----*/
{
// Reset the display
lcd.clear();
delay(1000);
lcd.home();
// Print our characters on the LCD
lcd.backlight(); //Backlight ON if under program control
delay(1000);
lcd.setCursor(2,0); //Start at character 2 on line 0
lcd.print("Hello, world!");
delay(1000);
/* lcd.setCursor(2,1);
lcd.print("From YourDuino");
delay(1000);
*/
lcd.setCursor(3,1);
lcd.print("from niq_ro ");
delay(1000);
/* lcd.setCursor(0,2);
lcd.print("20 by 4 Line Display");
lcd.setCursor(0,3);
delay(2000);
lcd.print("http://YourDuino.com");
*/
delay(5000);
lcd.noBacklight();
delay(1000);
} // END Loop
