MFRC522 rfid

-

hi bought mfrec522 rfid tags..i can compare uid of particular card other cards..so can give acces particular card..im trying use mfrc522 rfid sensor..whenever put card on reader read continuously uid of card(which want give acess),but want arduino should give me acknowledgment continuously whenever card not present on reader..so can put mfrc522 reader on fix bar of door  , tag on door...whenever try open door give alarm..plzz give me code



Arduino Forum > Using Arduino > Sensors > MFRC522 rfid


arduino

Comments

Post a Comment

Popular posts from this blog

Help with codes to add 1 more shift register and add more to matrix LED

-
hi im working on 8x10 matrix leds , successful @ using guide http://www.instructables.com/id/810-led-matrix-with-4017/ using 4017 , 74hc595 now want expand matrix 16x10. i connected , worked added 74hc595 control second 8x10. my problem want display text using both 8x10 im using code guide , modified think doesnt work code: [select] #define someshape    {b0100001001000010,b1110011101000010,b0100001001000010,b0000000001000010,b0001100001000010,b0001100001000010,b1000000101000010,b1000000101000010,b0100001001000010,b0011110001000010  }    #define all     {b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111,b1111111111111111  }                        #define someshape2   {b0100001001000010,b1110011101000010,b0100001001000010,b0000000001000010,b000110000100001...
Read more

tcp client

-
i'm using arduino uno , w5100 ethernet shield. i'm trying connect ethernet shield software downloaded ( sockettest v3.00) communication between server (sockettest) , shield (client).the shield jack connected router. created server under ip address of laptop. uses telnet client example can't connect server on sockettest. first time i'm doing tcp/ip , had done similar project or guide me on this. sockettest - http://sockettest.sourceforge.net/ uno - https://store.arduino.cc/arduino-uno-rev3 ethernet shield - http://www.hobbytronics.co.uk/arduino-wiznet-shield here code -------------------- code: [select] #include <spi.h> #include <ethernet.h> byte mac[] = {   0xde, 0xad, 0xbe, 0xef, 0xfe, 0xed }; ipaddress ip(192, 168, 1, 220);// shield ip ipaddress server(192, 168, 1, 37); // computer ip ethernetclient client; void setup() {   // start ethernet connection:   ethernet.begin(mac, ip);// open serial communications , wait port open: ...
Read more

Is there an HTML component in Flex 2.0?

-
hi all   does flex 2.0 have html component? render html pages local hard disk , remote server. how achieve in flex 2.0?   thanks in advance...   regards prashanth i believe can air application, "uses open source webkit engine".  did come across component:   html component but not sure if available flex builder 2.0.  have price tag. More discussions in Flex (Read Only) adobe
Read more