A parallax RFID reader is used to read TAGS, shown in Figure 55.
Figure 55: RFID Reader
RFID Reader Pin | Arduino Pin |
5v | 5v |
Gnd | Gnd |
OE (Enable) | Digital Pin 7 |
out | Digital Pin 15 |
Table 9: Pin Connections RFID Reader and Arduino
All communication is 8 data bits, no parity, 1 stop bit, and least significant bit first (8N1) at 2400 bps. When the RFID Card Reader is active and a valid RFID tag is brought within range of the reader, the tag’s ID will be transmitted as a 12-byte ASCII string serially to the host in the following format:
A start byte and stop byte are used to identify that a correct string has been received from the reader and to make sure that an actual tag was read. The middle ten bytes are the actual tag ID. For example, for a tag with a ID of 0F0184F07A, the following bytes would be sent: 0x0A, 0x30, 0x46, 0x30, 0x31, 0x38, 0x34, 0x46, 0x30, 0x37, 0x41, 0x0D.( Parallax data sheet).
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