PIC Microcontroller Projects in C, 2nd Edition

Project 7.4—RFID Lock

In this project, we shall be using an RFID system to create a security lock. The lock will be based on a relay that will operate when the correct tag is placed near the reader.

The block diagram of the project is shown in Figure 7.39.

Figure 7.39 Block Diagram of the Project.

Figure 7.40 Circuit Diagram of the Project.

Project Hardware

The circuit diagram of the project is very similar to the one given in Figure 7.26, except that here additionally a relay and a lock mechanism are connected to the RC0 pin of the microcontroller via ...