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[on:]

Is it possible to interface these two? Is it the same as the standard Parallax RFID Card Reader ? I hook them up the same and try some code I found online but nothing seem to happen

[Reply #1 on:]

A link would greatly HELP you

[Reply #2 on:]

Oh sorry RFID Card Reader Serial : http://www.parallax.com/tabid/768/ProductID/114/Default.aspx and             RFID Read/Write Module, Serial: http://www.parallax.com/Store/Accessories/CommunicationRF/tabid/161/ProductID/688/List/0/Default.aspx?SortField=ProductName,ProductName

[Reply #3 on:]

They are both serial devices, so, yes, that can be connected to the Arduino.

Communication: asynchronous serial 9600 bps, (8N1); 5 V TTL-level, non-inverted

Oh, good. No intermediate converter chip needed.

I hook them up the same and try some code I found online but nothing seem to happen

The same as what? Are you trying to connect both the reader and the writer/reader at the same time? What code? After you connected the devices, what did you do? Which Arduino do you have?

Details, man, details. The more, the merrier.

[Reply #4 on:]

Sorry again. I hook up the reader/writer the same way you would hook up the regular writer and use this code :

Code:

#include <NewSoftSerial.h>

int val = 0;
char code[12];
char tag[12] = {'s', 'e', 'c', 'r', 'e', 't', 't', 'a', 'g', '!'};
int bytesread = 0;
#define rxPin 8
#define txPin 9 //dont need me
#define manual 1
#define auto 0
int automanuallock = auto;
#define unlocked 1
#define locked 0
int doorlockstatus = locked;
#define codeprintenabled 1
#define codeprintdisabled 0
int codeprintswitch = codeprintenabled;
#define powerPin 5
#define failPin 6
#define passPin 4
#define doorPin 3
#define enablePin 2
#define dooropentime 3000 // its in ms
void setup()
{
Serial.begin(9600); // Hardware serial for Monitor 9600bps
pinMode(enablePin,OUTPUT); // Set digital pin 2 as OUTPUT to connect it to the RFID /ENABLE pin
digitalWrite(enablePin, LOW); // Activate the RFID reader
pinMode(powerPin, OUTPUT); // Connected to Blue LED to indicate reader is ready
pinMode(passPin, OUTPUT); // Connected to Green LED to indicate user is valid
pinMode(failPin, OUTPUT); // Connected to Red LED to indicate user is NOT valid
pinMode(doorPin, OUTPUT); // Connected to relay to activate the door lock
digitalWrite(powerPin, HIGH);
}
void loop()
{
digitalWrite(enablePin, LOW);
ReadRFID();
codeprint(); //(un)comment for rfid code via serial
digitalWrite(enablePin, HIGH);
check();
}
void ReadRFID()
{
NewSoftSerial RFID = NewSoftSerial(rxPin,txPin);
RFID.begin(2400);
if((val = RFID.read()) == 10)
{ // check for header
bytesread = 0;
while(bytesread<10)
{ // read 10 digit code
val = RFID.read();
if((val == 10)||(val == 13))
{ // if header or stop bytes before the 10 digit reading
break; // stop reading
}
code[bytesread] = val; // add the digit
bytesread++; // ready to read next digit
}
}
}
void check()
{
if(bytesread >= 10) { // if 10 digit read is complete
if(strcmp(code, tag) == 0) {
if (automanuallock == manual)
{
manualdoorlockorunlock();
}
else if (automanuallock == auto) {
doorauto();
}
}
else {
failandlockplus();
}
}
}
void codeprint(){
if (codeprintswitch == codeprintenabled)
{
Serial.println("TAG code is: ");
Serial.print(code);
}
}
//autolocks door
void doorauto()
{
Serial.println("Accepted");
Serial.println("Unlocked.");
digitalWrite(doorPin, HIGH);
digitalWrite(passPin, HIGH);
delay(dooropentime);
Serial.println("Locked");
digitalWrite(doorPin, LOW);
digitalWrite(passPin, LOW);
}
void manualdoorlockorunlock(){
if (doorlockstatus == locked)
{
doorunlock();
}
else if (doorlockstatus == unlocked) {
doorlock();
}
}
void doorunlock()
{
Serial.println("Accepted.");
Serial.println("Door unlocked.");
digitalWrite(doorPin, HIGH);
digitalWrite(passPin, HIGH);
doorlockstatus = unlocked;
delay(2000);
digitalWrite(passPin, LOW);
}
void doorlock()
{
Serial.println("Accepted.");
Serial.println("Door locked.");
digitalWrite(passPin, HIGH);
digitalWrite(doorPin, LOW);
doorlockstatus = locked;
delay(2000);
digitalWrite(passPin, LOW);
}
void failandlock()
{
Serial.println("Rejected.");
Serial.println("Door locked.");
digitalWrite(doorPin, LOW);
digitalWrite(failPin, HIGH);
delay(1000);
digitalWrite(failPin, LOW);
}
void failandlockplus()
{
if (doorlockstatus == locked)
{
Serial.println("Rejected.");
Serial.println("Door already locked.");
digitalWrite(failPin, HIGH);
digitalWrite(doorPin, LOW);
delay(1000);
digitalWrite(failPin, LOW);
}
else if (doorlockstatus == unlocked) {
Serial.println("Rejected.");
Serial.println("Door locked.");
digitalWrite(doorPin, LOW);
digitalWrite(failPin, HIGH);
doorlockstatus = 0;
delay(1000);
digitalWrite(failPin, LOW);
}
}
void fail()
{
Serial.println("Rejected.");
digitalWrite(failPin, HIGH);
delay(1000);
digitalWrite(failPin, LOW);
}
void pass()
{
Serial.println("Accepted.");
digitalWrite(passPin, HIGH);
delay(1000);
digitalWrite(passPin, LOW);
}
void reset()
{
Serial.println("Reset.");
digitalWrite(doorPin, LOW);
digitalWrite(failPin, LOW);
digitalWrite(passPin, LOW);
digitalWrite(powerPin, HIGH);
}

I found that here : http://www.mitchandstuff.com/?p=14
The code runs fine. The reader/writer lights up, but when I put a tag over it nothing happens.

[Reply #5 on:]

Code:

NewSoftSerial RFID = NewSoftSerial(rxPin,txPin);
RFID.begin(2400);

Why are you creating a new instance of NewSoftSerial on every pass through loop? This should be done once before setup, and the begin call belongs in setup().

I tried viewing the user guide on the writer site. No go. I'm not particularly fond of watching an hour glass spin for 10 minutes.

[Reply #6 on:]

I have no clue remember this is not my code, and I'm relatively new to coding well C (I know my way around VB.net -_-"  lol) so thanks for point that out . and for all your help