125KHz RFID Reader

Hi all
I am facing problems with this module. Hardware setup:

The problem basically is that I don’t get any response from the device and I don’t know how to proceed. No bytes on the UART.
The UART on the BBG (ttyO2) is configured correctly, 8N1 9600 baud/s no flow control (-crtscts -ixoff -ixon).
The LED always stays red: is it supposed to turn to green?

Apart from moving a pre-programmed RFID tag over the antenna am I supposed to do something else?

Sorry if the questions are stupid but there’s not so much documentation about this module…



Please refer the Wiki of Grove - 125KHz RFID Reader module. As mentioned, this module works with supply voltage: 4.75-5.25V.

It does not work with 3.3V VCC. BeagleBone Green UART Grove connector provide 3.3V.

Thanks and Warm Regards.

Grove - 125KHz RFID Reader module will work with Grove Cape for BeagleBone exapansion board on BBG.

Thanks guys, sorry for the newbie question. Should have read the datasheet better…