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Circuit Diagram for RFID Reader


Two RFID boards are combined onto a single board to take advantage of ExpressPCB’s cheaper mini board prices. Power is connected to the board using 3.5mm audio jacks. There is a surface mounted jack on one side of the board and a panel mounted one on the other. This enables meeper receiver stations and RFID tag readers to be easily chained together, thus needing only one power supply for several boards. The communications port on this board is a RJ-11 style connector, which is the same as on the meeper receiver station. This is much more compact for communications between the RFID tag reader and the meeper receiver station, and can be connected to a DB-9 connector using an adapter. Pin 2 on the RJ-11 connector is set up for transmit and pin 5 is receive. Pins 3 and 4 are tied to ground.

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