TOP Contributors

  1. MIKROE (2784 codes)
  2. Alcides Ramos (405 codes)
  3. Shawon Shahryiar (307 codes)
  4. jm_palomino (133 codes)
  5. Bugz Bensce (97 codes)
  6. S P (73 codes)
  7. dany (71 codes)
  8. MikroBUS.NET Team (35 codes)
  9. NART SCHINACKOW (34 codes)
  10. Armstrong Subero (27 codes)

Most Downloaded

  1. Timer Calculator (141479 times)
  2. FAT32 Library (74335 times)
  3. Network Ethernet Library (58869 times)
  4. USB Device Library (48921 times)
  5. Network WiFi Library (44698 times)
  6. FT800 Library (44227 times)
  7. GSM click (30937 times)
  8. mikroSDK (29817 times)
  9. PID Library (27423 times)
  10. microSD click (27375 times)
Libstock prefers package manager

Package Manager

We strongly encourage users to use Package manager for sharing their code on Libstock website, because it boosts your efficiency and leaves the end user with no room for error. [more info]

< Back
Project

RFid Lock with 4 Relays

Rating:

11

Author: MIKROE

Last Updated: 2016-02-18

Package Version: 1.0.0.0

Category: RFid

Downloaded: 7274 times

Followed by: 3 users

License: MIT license  

Using PIC-Ready1 with PIC18F4520, RFid reader, Relay 4 board, along with EasyInput and EasyBuzz we have created a simple RFid lock that controls 4 separate relays with RFid cards. And it will cost you less than $100 USD!

No Abuse Reported

Do you want to subscribe in order to receive notifications regarding "RFid Lock with 4 Relays" changes.

Do you want to unsubscribe in order to stop receiving notifications regarding "RFid Lock with 4 Relays" changes.

Do you want to report abuse regarding "RFid Lock with 4 Relays".

  • Information
  • Comments (1)

Project Blog

Figure 1 - Your own RFid Lock set

Figure 1 - Your own RFid Lock set

Boards connected

View full image

At least once in our lives we have come across some kind of RFid locks in homes, offices, elevators or hotels. Some of you may have been inspired to build your own version of it for your home or as a final product. We will show you how you can do this in a blink of an eye. Using PIC-Ready1 with PIC18F4520, RFid reader, Relay 4 board, along with EasyInput and EasyBuzz we have created a RFid lock that controls 4 separate relays with RFid cards. And it will cost you less than $100!

RFid lock with 4 relays video

Video demonstration of the project

Watch on YouTube

Before you can use it, you must program the board to recognize your RFid cards, and assign them to each relay separately.

  1. Bring 5V to the input pins on PORTA associated with relays. You can do this using EasyInput board
  2. Reset PIC-Ready1 board to enter programming mode. Buzzer will signal that programming mode is enabled.
  3. One-by-one, program the RFid card for each relay by swaping it over RFid reader when a relay LED turns on.
  4. After you are finished, bring inputs on PORTA to GND and reset the board to enter normal mode.
  5. By swapping the appropriate card over the RFid reader, associated relay will turn on for 2 seconds, accompanied by a sound signalization.
  6. Buzzer will signal if the card is not recognized.

Figure 2 - RFid Lock schematics

Figure 2 - RFid Lock schematics

RFid Lock schematics

View full image

Source code of this project is provided for free, so you can modify it to suit your needs. Since PIC18F4520 comes preprogrammed with free UART Bootloader, you won’t have to spend a dollar more on external programmers. You can modify the project as much as you like, and expand this basic functionality with your own implementation ideas.

ALSO FROM THIS AUTHOR

LR 2 Click

0

LR 2 Click is a compact add-on board that contains a low-power, long-range transceiver. This board features the RN2903, RF technology-based SRD transceiver, which operates at a frequency of 915MHz from Microchip Technology. This Click board™ features an embedded LoRaWAN Class A compliant stack, providing a long-range spread spectrum communication with high interference immunity. The RN2903 module is fully compliant with the United States (FCC) and Canada (IC) regulations combined with the advanced and straightforward command interface allowing easy integration into the final application.

[Learn More]

MP3 click

5

Simple example which demonstrates working with <b>MP3 click</b> board in mikroBUS form factor. Example will play MP3 file "sound.mp3" located on the microSD card.<br />

[Learn More]

Piezo Driver Click

0

Piezo Driver Click is a compact add-on board that allows you easy system configuration for driving a two-terminal or three-terminal piezo sounder with few external components. This board features the PAM8906, a piezo sounder driver with self-excitation mode from Diodes Incorporated.

[Learn More]