Electronics developer and Kickstarter serial entrepreneur Patrick Thomas Mitchell who we have featured numerous times here on Geeky Gadgets has once again taken to the crowdfunding website with the ...

The use of Radio Frequency IDentification (RFID) technologies is growing. Many different applications are implemented in various sectors, and used for very different purposes. RFID enables wireless ...

最近想整打卡系統,基本功能如下: 1.分辨卡主身份 2.判斷出入狀態 (類似地鐵閘機,第一次拍卡=入閘,再拍卡=出閘) Serial.print(」 , 「); Serial.print(rfid.serNum[1],BIN); Serial.print(」 , 「); Serial.print(rfid.serNum ...

This project demonstrates how to use an RFID RC522 module with an Arduino to authenticate RFID cards. The system turns on a green LED if an authorized RFID card is scanned and turns on a red LED and ...

2.判斷出入狀態 (類似地鐵閘機,第一次拍卡=入閘,再拍卡=出閘) 3.紀錄出入時間 我係用RC522 RFID module,我係網上搵到相關資料,程式碼如下 但呢段程式碼只能用作分辨卡主身份,並唔能夠判斷出入狀態:?

RFID Module: Reads the UID from an RFID tag/card. If the UID matches the authorized UID, access is granted. This project is open-source and can be freely used for educational purposes. I demonstrate ...

I just received my RC522 RFID reader and made this simple Arduino access control system that uses the reader, a buzzer for the alarm and a relay shield for the security system. The relay can be used ...