Introduction - If you have any usage issues, please Google them yourself
51 single rc522 radio program and with the PCB circuit
Including source code, pcb diagram, you can direct the plate.
This information is to find a long time to download, and the others have no information on PCB
No PCB does not make sense, do the antenna on the PCB, if there is no field strength meter, you need at least four times
Modified, in order to achieve 10cm distance reader.