This RFID Reader Module (Serial version only) comes with two 54x85mm Rectangle Tags.
Designed in cooperation with Grand Idea Studio, the Parallax Radio Frequency Identification (RFID) Reader Module is the first low-cost solution to read passive RFID transponder tags. The RFID Reader Module can be used in a wide variety of hobbyist and commercial applications, including access control, automatic identification, robotics, navigation, inventory tracking, payment systems, and car immobilization.
There are a variety of transponder tags that come in different packages. Each tag has a specific range that is within 10% of the given distance for each type of tag. The reason for the 10% is due to environmental conditions and RFID modules.
Features:
- Low-cost method for reading passive RFID EM4100 family transponder tags
- 2400 baud serial interface
- Enable input allows module to be enabled/disabled by software
- Bi-color LED for visual indication of status
Compatible tags:
Key Specifications:
- Reads 125 kHz Tags, EM41000 Family
- Power requirements: 4.5 to 5.5 VDC
- Communication: Serial at 2400 baud (8N1)
- Dimensions: 2.45 x 6.25 x 0.22 in (62.2 x 82.5 x 5.57 mm)
- Operating temp range: -40 to +185 °F (-40 to +85 °C)
Alternate View:
Click through for a close-up.
Note: This device can be connected to a PC serial port using a MAX232 line driver. The circuit isn't supported by Parallax, but it's possible to make this connection with a few dollars of parts or by using the USB version of the reader. There is an outline of connections on the forums.
Parallax Perspective:
Click to Watch Video
Downloads & Resources:
RFID Reader Software on Forums
RFID and Text-to-Speech Modules Video Podcast
RFID Reader Documentation v2.3 (.pdf)
BASIC Stamp 2 Source Code (.BS2)
RFID Basic (.BS2)
BASIC Stamp 1 Source Code (.BS1)
SX/B RFID Card Reader Code (.SXB)
RFID Security (.SXB)
RFID Door Lock Video (.mpg)
N&V column "You Can't Touch That" #120 (.pdf)
Nuts & Volts Column RFID (.pdf)
EDN Article: RFID in Embedded Designs: Your Move (Off Site)