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RFID RS485 ARDUINO SYSTEM

10 months ago 314
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Description

In this DIY guide I will show you how to make your own security check system based on Arduino!

This project started out as a Bachelor's thesis by me - John Vasilakis (supervised by Grigoris Tziallas) - Electronic Engineering Department of Stereas Elladas University. We are supporting the open hardware - software community so this project will be marked as an open-source. Before share/copy/change anything of below guide, make sure to read and agree with the ​CC BY-NC-SA licence agreement!

We used the RFID technology to read scanned card and the RS485 electrical data bus protocol for communication. In this project I decided to make my own PCB that is based on Arduino UNO microcontroller - Atmega328p.

We can have up to 254 slave-check point stations and one master station in the RS485 data bus. The master station is communicating with one computer in security room via serial USB port. We will describe the communication protocol in the following steps!

https://www.ardumotive.com/arduino-security-check-system-en.html

Documents

Sheet_1

NEW_PCB

BOM

ID Name Designator Footprint Quantity Manufacturer Part Manufacturer Supplier Supplier Part Price LCSC Assembly Mounted BOM_Supplier BOM_Manufacturer BOM_Manufacturer Part BOM_Supplier Part
1 ATMEGA328P-PU U1 DIP-28_300MIL 1 LCSC MICROCHIP ATMEGA328P-PU C33901
2 10k R1 AXIAL-0.4 1
3 16MHZ X1 OSC-49S-1 1 LCSC YXC X49SD16MSD2SC C16212
4 10uF C1 CAP-D5.0XF2.0 1
5 22pF C2,C3 RAD-0.1 2 LCSC ReliaPro 22pf/50V 10% C9316
6 2.54mm 1*5p Programming Header H1 HDR-5X1/2.54 1 LCSC BOOMELE 2.54mm 1*5p Female header C50950
7 100nF C4 RAD-0.1 1 LCSC ReliaPro CS1F5.6Y5V1A104Z C9306
8 5mm 1*2P POWER,485 SCREW TERMINAL 5MM 2P 2 LCSC ReliaPro 2.54mm 1*2P undefined
9 Buzzer SG1 BUZZER-12MM-KIT 1
10 DS1307+ U2 DIP-8 1 LCSC MAXIM DS1307+ C59267
11 CR2032 B1 BATTERY-1 1 LCSC Q&J BS-2-1 C70376
12 32.768KHz X2 3*8 1 LCSC KDS DT-38 32.768KHz C93228
13 2.54mm 1*8p Female header RFID 1X7 PIN HEADER 2.54MM A 1
14 Header-Female-2.54_1x12 LCD PIN_HEADER_STRAIGHT_1X12_PITCH2.54MM 1 BOOMELE Female header 2.54-1*13P
15 TRIMMER R2 TRIMMER_3362P 1
16 SN75176BP U3 DIP-8 1 LCSC TI SN75176BP C5215
17 RX JUMPER H2 HDR-3X1/2.54 1 LCSC BOOMELE 2.54mm 1*3p Female header C50950
18 TX JUMPER H3 HDR-3X1/2.54 1 LCSC BOOMELE 2.54mm 1*3p Female header C50950
19 1k R3,R4,R5 AXIAL-0.4 3

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