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Model Railroad Control Systems

Dual Reader "Shield" for ID12-LA RFID Reader


Dual Reader "Shield" for ID12-LA RFID Reader

0.20 LBS
Calculated at checkout

Product Description

The version 3.1 RFID Shield is an Arduino Uno/Leonardo form factor "shield" that supports one or two Innovations ID12LA readers and provides break outs for "read" LEDs.  The ID12LA reads 125KHz EM4100 chips.  The v 3.1 shield is a little shorter than the a standard Arduino shield to clear the RJ45 Ethernet Jack on the Ethernet adapter usually used in the reader stack.  There are no female connectors facing up because an additional board won't clear the connectors for the reader heads, so the RFID shield must be mounted on top.

The RFID system was featured in the RFID article in the December 2014 Model Railroader by Seth Neumann and Chris Drome.  This shield is intended for use with the RFID server.  We will offer a sketch for use with your own RFID applications, but it is not a complete application by itself.  See Chris and Seth's clinic from the 2013 NMRA convention in Atlanta.


The ID12-LA and interface connectors are not included, You must supply:

  • one or two ID12-LA readers
  • one or two 5 pin 0.100 jumper of suitable length
  • one or two 6 pin 0.100 jumper of suitable length
  • one or two 2 pin 0.100 jumper of suitable length (for the LED if desired)
  • one or two ID12LA - 0.100 break out boards
  • one Arduino Uno R3
  • 0.100 header pins for Break out boards (11 for each break out board) on our site or at Sparkfun
  • one Ethernet Shield for Arduino
  • one 9V Power Supply for Arduino

or you can purchase a complete reader with one head or a complete reader with two heads

these are all available from SparkFun Electronics

The Free Arduino Sketch for the reader assembly will available 3Q16

The whole assembly draws 25mA from an Arduino Power Supply connected to the Uno in the stack.

Installation Instructions

Basic Sketch to illustrate use of Shield

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