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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! ^