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The installation path varies depending on your Proteus version and operating system architecture. Navigate to the appropriate folder on your PC:

Let’s walk through the installation using Proteus 8 Professional (works similarly for versions 7–8.x). For this guide, we assume you have downloaded a verified RC522 Proteus library (sources like The Engineering Projects or GitHub).

C:\Program Data\Labcenter Electronics\Proteus 8 Professional\Data\LIBRARY

To make the RC522 work in a simulation, you will also need the for your firmware. The standard pin configuration for an Arduino Uno is as follows: Arduino Pin SDA (SS) SPI Chip Select SCK MOSI SPI Data Out MISO SPI Data In RST VCC Power (Do not use 5V) GND 4. Adding Text to Your Schematic

Virtual simulations can occasionally throw errors due to path naming issues or clock speeds.

: Replicates the physical 8-pin layout of the actual blue/red RC522 breakout boards.

Before diving into the library itself, we need to understand the value of simulation.

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| RC522 Pin | Typical Function | Arduino Uno (Proteus) | PIC16F877A | | :--- | :--- | :--- | :--- | | | Slave Select (Active Low) | Digital 10 | RC0 | | SCK | Serial Clock | Digital 13 | RC3 | | MOSI | Master Out, Slave In | Digital 11 | RC5 | | MISO | Master In, Slave Out | Digital 12 | RC4 | | IRQ | Interrupt (Optional) | Digital 2 | RB0 | | GND | Ground | GND | GND | | RST | Reset | Digital 9 | RC1 | | 3.3V | Power | NOT 5V | NOT 5V |

Tell me, what (e.g., Arduino Uno, ESP32, PIC) are you targeting for this simulation, and what is the ultimate goal of your RFID project? Share public link