I received my : “125Khz RFID module - UART” yesterday in the mail.
I have it connected to an Arduino UNO, exactly how the photos are shown on the WIKI.
I am running the sample code from the WIKI.
The LED on ‘P3’ - is always on. It’s on with an antenna, without an antenna. ?
the serial output from the unit via the Arduino interface shows no data ever?
I’m speculating that their is something wrong with the hardware?
- Pin Definition (TTL interface RS232 data format):
Signal LED stays on for - 125Khz RFID Card
Connect RX/TX to Arduino UART port , Uart demo code :