https://github.com/seeed-studio/rfid_library
125Khz RFID library for Arduino
https://github.com/seeed-studio/rfid_library
Last synced: about 1 year ago
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125Khz RFID library for Arduino
- Host: GitHub
- URL: https://github.com/seeed-studio/rfid_library
- Owner: Seeed-Studio
- License: mit
- Created: 2014-02-18T05:38:13.000Z (over 12 years ago)
- Default Branch: master
- Last Pushed: 2025-01-08T08:55:37.000Z (over 1 year ago)
- Last Synced: 2025-03-30T19:09:25.367Z (about 1 year ago)
- Language: C++
- Homepage:
- Size: 19.5 KB
- Stars: 61
- Watchers: 30
- Forks: 29
- Open Issues: 0
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
RFID Library [](https://travis-ci.com/Seeed-Studio/RFID_Library)
============
125Khz RFID library for Arduino.
This library only support TTL RS232 serial port.
[Grove - 125KHz RFID Reader
](https://www.seeedstudio.com/s/Grove-125KHz-RFID-Reader-p-1008.html)
When read the data from some RFID card, you will get data like `00 91 6f 0b f5`.
Example:
```
your card number: 0009531147
that your data : 00 91 6f 0b f5
```
**Notice, f5 is the check bit**
`f5 = 00^91^6f^0b`
#### Pins
1. VCC support 3.3 ~ 5V
2. TX, RX connect to Arduino or Seeeduino
3. T1, T2 is the Signal port for RFID antenna
4. W0, W1 is for wiegand protocol, but this library not support yet.
```
+-----------+
++++++++----|VCC T1|----
| +++++----|GND T2|----
| | |++----|TX SER|----
| | | ----|RX LED|----
| | | ----|W0 BEEP|----
| | | ----|W1 GND|----
| | | +-----------+
| | \___________________________________
| |_____________________________ |
| | |
| + + + + + + + + + + + + + + + +
| | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | |
| +-----------------|-|-|-|-|-|-|-|--|-|-|-|-|-|-|-|-+
| | x-x-x-x-x-x-x-x x-x-x-x-x-x-x-x |
| | xxx |
| +--------+ xxx --- --- ............. |
| | | | - x + | ' | ||\ |.-. ' +
| | | ^ --- --- | |__|| \|._. | x
| | | <+++> ARDUINO '.............' +
| +--------+ V |
| | _____ ++-++ xx |
| | <_____> +-O-+ xx |
| | ++-++ xx |
| |+--++-- |
| ||||++-- +---------------------+ |
| |+--++-- | | |
| | | | |
| ++------+ +---------------------+ |
| ++ | +
| ++ | +-+ +-+ x
| ++------+ +-+ +-+ x-x-x-x-x-x x-x-x-x-x-x +
| +-------------------------|-|-|-|-|-|-|-|-|-|-|-|--+
| | | | | | | | | | | | |
| | | | | | | | | | | | |
| + + + + + + + + + + + +
|____________________________________________|
```
### Usage
Connecting RFID Reader RX, TX to Arduino pin headers.
`RX <--> 10`
`TX <--> 11`
```c
// RFID_UART.ino
#include
#include
#define RFID_RX_PIN 10
#define RFID_TX_PIN 11
#define TEST
SeeedRFID RFID(RFID_RX_PIN, RFID_TX_PIN);
RFIDdata tag;
void setup() {
Serial.begin(57600);
Serial.println("Hello, double bk!");
}
void loop() {
if(RFID.isAvailable()){
tag = RFID.data();
Serial.print("RFID card number: ");
Serial.println(RFID.cardNumber());
#ifdef TEST
Serial.print("RFID raw data: ");
for(int i=0; i
#include
#define RFID_RX_PIN 10
#define RFID_TX_PIN 11
#define RFID2_RX_PIN 12
#define RFID2_TX_PIN 13
SeeedRFID RFID(RFID_RX_PIN, RFID_TX_PIN);
RFIDdata tag;
SeeedRFID RFID2(RFID2_RX_PIN, RFID2_TX_PIN);
RFIDdata tag2;
void setup() {
Serial.begin(9600);
RFID.listen(); //first, we listen for data on reader #1
}
void loop() {
if(RFID.isAvailable()){
tag = RFID.data();
Serial.print("RFID card number: ");
Serial.println(RFID.cardNumber());
RFID2.listen(); //now start listening for data on reader #2
}
if(RFID2.isAvailable()){
tag2 = RFID2.data();
Serial.print("RFID2 card number: ");
Serial.println(RFID2.cardNumber());
RFID.listen(); //then we listen to reader #1 again...
}
}
```
For more information please visit [wiki]([wiki](http://wiki.seeedstudio.com/Grove-125KHz_RFID_Reader/)).
----
This library is written by [Ye Xiaobo][Github Homepage] for seeed studio
and is licensed under [The MIT License](https://github.com/yexiaobo-seeedstudio/RFID_Library/blob/master/LICENSE).
Contributing to this software is warmly welcomed. You can do this basically by
[forking](https://help.github.com/articles/fork-a-repo), committing modifications and then [pulling requests](https://help.github.com/articles/using-pull-requests) (follow the links above
for operating guide). Adding change log and your contact into file header is encouraged.
Thanks for your contribution.
Seeed Studio is an open hardware facilitation company based in Shenzhen, China.
Benefiting from local manufacture power and convenient global logistic system,
we integrate resources to serve new era of innovation. Seeed also works with
global distributors and partners to push open hardware movement.
[RFID Image]: http://www.seeedstudio.com/wiki/images/6/6a/RFID.jpg
[Github Homepage]: https://github.com/yexiaobo-seeedstudio
[](https://github.com/igrigorik/ga-beacon)