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Topic: Rfid ID-20MFIA Help (Read 181 times) previous topic - next topic


Hello there. 

I bought the standard id-20 writer not the 12, and I snapped a few pins due to the spacing so I ordered a new rfid chip model ID-20MFIA

This is a reader/writer , im trying to get the thing to read card with no luck the id20 I 1st bought worked fine

is there a special code for this model,  I need it for my door strike I have been trying this code with no luck

this model has 14 pins . please help thanks.

 #include <SoftwareSerial.h>
SoftwareSerial RFID(2, 3); // RX and TX
int i;
void setup()
  RFID.begin(9600);    // start serial to RFID reader
  Serial.begin(9600);  // start serial to PC
void loop()
  if (RFID.available() > 0)
     i = RFID.read();
     Serial.print(i, DEC);
     Serial.print(" ");



It's possible that the bare chip requires firmware to be written to it first.

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