DRAFT: This module has unpublished changes.

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).

 

DRAFT: This module has unpublished changes.