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 ...

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 ...

[Matt] has mixed up a batch of two RFID reading door lock systems. While the “door lock” part of the setup has yet to come into existence, the “RFID reading” section is up and running. By using 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 ...

Serial entrepreneur Patrick Thomas Mitchell has once again taken to Kickstarter to launch his 33rd campaign allowing electronic enthusiasts to back a small yet fast RFID reader. The card reader can be ...