Micro controller Programming

Anybody help me regarding comparing UID of multiple 1k NFC Tag..

Comparison is simply "==" in C language. If you want more help than that, then you need to provide more info to me.

Show me the code that reads the NFC tag and the code that takes the user input.

M. Tamilarasan said:

How to convert UID of NFC tag into string...Usually the UID will be in bytes

Click to expand...

Assuming you are using Arduino sketch: https://arduino.cc/en/Reference/StringObject
If that does not help, then you should drop the project and do something else... likse shoveling.

Again!!! I want to see an example of what you need...

IncommingString = "-----------"; // what is in this UID string?

WantedString1 ="-----"; // What will end up here ?

WantedString2 = "------" // What will end up here?

Thanks for ur help...got the solution....!!

How to call a webpage using ENC28J60 Ethernet Module with arduino uno

Is it possible to Read the Arduino's EEPROM values and display it in URL using ECN28J60 Module

M. Tamilarasan said:

Is it possible to Read the Arduino's EEPROM values and display it in URL using ECN28J60 Module

Click to expand...

Of course it is... There is an EEPROM library in your IDE and your Ethernet shield will also have a library..

Is it possible to lock particular block alone in NFC tag using Arduino. If yes plz reply with sample code...

Thanks in advance for anybody who going to help me

How to clear Memory blocks of NFC Mifare 1k classic card using Arduino

using Arduino I want to read Serial data
if Serial data = GET01000300
it should print Read
if Serial data = SET01000300
it should print Write
Please anybody help me i'm not good with programming...
Thanks in advance!!!!!!

Anybody help

Please anybody help me now...it's urgent

How to connect YL-30 SD shield with Arduino Uno.
Please post the sample program to test it and also post the link to download the library file for this particular shield

If this is the device..
http://www.wayengineer.com/index.php?main_page=product_info&products_id=942
Then the standard SD library will work ..



Just make sure your voltage levels are ok... It looks like there are level shifters on the board.

M. Tamilarasan said:

How to connect YL-30 SD shield with Arduino Uno.

Click to expand...

Usually Arduino shields are designed to be just pushed in place (on top of the Arduino). That is why they are called "shields".

Thanks a lot SD shield are working...
Please help me when we enter serial data the data should store in SD card with Date and Time

How to print Current Date and Time using arduino...through arduino IDE...

#include <DS1307RTC.h>
#include <Time.h>
#include <Wire.h>

void setup() {
Serial.begin(9600);
while (!Serial) ; // wait for serial
delay(200);
Serial.println("DS1307RTC Read Test");
Serial.println("-------------------");
}

void loop() {
tmElements_t tm;

if (RTC.read(tm))
{
Serial.print("Ok, Time = ");
print2digits(tm.Hour);
Serial.write(':');
print2digits(tm.Minute);
Serial.write(':');
print2digits(tm.Second);
Serial.print(", Date (D/M/Y) = ");
Serial.print(tm.Day);
Serial.write('/');
Serial.print(tm.Month);
Serial.write('/');
Serial.print(tmYearToCalendar(tm.Year));
Serial.println();
} else {
if (RTC.chipPresent()) {
Serial.println("The DS1307 is stopped. Please run the SetTime");
Serial.println("example to initialize the time and begin running.");
Serial.println();
} else {
Serial.println("DS1307 read error! Please check the circuitry.");
Serial.println();
}
delay(9000);
}
delay(1000);
}

void print2digits(int number) {
if (number >= 0 && number < 10) {
Serial.write('0');
}
Serial.print(number);
}




i haave got error : expected primary-expression before '.' token

Thanks in advance

This is the same code that is in the RTC readtest. Have you tried opening the sketch and just click verify?