Innovative Model Railroad Control System

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====== GCA-RFID  Support board for RFID ID-12(LA) and/or ID-20 sensors ======
[[english|{{  rocrail-logo-35.png}}]]

  * [[:hardware-en|GCA Hardware]]
    * [[:hardware-en#wio|GCA WIO]]
    * [[:wio:firststeps-en|WIO First steps]]

 \\

^^^^By Peter Giling ^^^^\\

====== Description. ======
{{  :gca:gca_rfid_pict_02.jpg}}
For ID-12 and ID-20 RFID sensors, it would be nice to have some kind of mounting board.\\
This avoids soldering on the rather expensive unit itself, it takes care for various \\
connections between pins, and also provides the needed place for resistors and capacitor.\\
This newest version also provides an extra resistor, in case the RFID sensor is be used to connect\\ 
with 3,3 V systems like Raspberry Pi and the GCA-PI01 HAT.\\
The numbers with connections correspondend with the numbering on GCA_PI01 S1 connector.\\
Remind that only pin 1,2 and 4 are to be connected to GCA_PI01, do NOT connected pin 3 in this case.\\
ID-12 and ID-20 also provide INVERSE(3)(=connection to any Processor) and NOT INVERSE(4)(= connection to RS232 port) outputs.\\
Follow directions below in case you have some doubts.\\
To avoid unstable situations a led indicator on this board is charged by a transistor, and\\
a small filter (R1 and C1) is used in the power supply.\\
\\
 

===== Pin connections =====
^  Pin#  ^  Function  ^  Remark 1  ^  Remark 2  ^  
|  1  |  Ground  |  |  |  
|  2  |  + 5 Volt  | + 3.3V in case of ID-12LA and WIO Mobile |  |  
|  3  |  Non Inverse output  (R3 installed)  |  remove R2 and R6  |  This option is for direct connection to Serial Port.  |
|  3  |  Inverse output (R2 + R6 installed) \\  R6 only if 3.3 V output is required  |  remove R3  |  Direct connection to any processor  |
\\
\\
^  Connection with GCA_PI01 S1  ^^^^
^  GCA_RFID J1  ^  GCA_PI01 S1  ^  Function  ^  Remark  ^
|  Pin 1  |  Pin 2  |  GND  |  **Please note pin reversal !**  |
|  Pin 2  |  Pin 1  |  +5V  |  **Please note pin reversal !**  |
|  Pin 3  |  Pin 4  |  Signal  |  R3 NOT installed  | 
\\
\\

^  Connection with CAN-GC4  ^^^^
^  GCA_RFID J1  ^  CAN-GC4  ^  Function  ^  Remark  ^
|  Pin 1  |  Pin 1  |  GND  |    |
|  Pin 2  |  Pin 2  |  +5V  |    |
|  Pin 3  |  Pin 3  |  Signal  |  R3 bridged  | 
\\
\\

^  Connection with WIO Mobile  ^^^^
^  GCA_RFID J1  ^  WIO Mobile  ^  Function  ^  Remark  ^
|  Pin 1  |  GND  |  GND  |    |
|  Pin 2  |  +3.3V  |  +3.3V  |    |
|  Pin 3  |  RX  |  Signal  |  R3 NOT installed  | 
\\
\\

===== Important Note:  =====
  
For use with GCA_PI01 or Rasberry direct  (= 3,3 Volt situation):\\
  - Do NOT mount R3.
  - Mount R6  (2.2 KOhm)

===== Harware files =====
  * https://gitlab.com/rocrail/GCA/-/tree/master/GCA_RFID

|  {{:gca:gca_rfid_sch.pdf|The schematics}}  |
|  {{:gca:gca_rfid_pcb.pdf|PCB and parts position}}  |
|  {{:gca:gca_rfid_partslist.pdf|Bill of materials and placing}}  |
^ N.B. Only complete ordered kits will be supported! ^