This library only support TTL RS232 serial port. VCC support 3.3 ~ 5V TX, RX connect to Arduino or Seeeduino T1, T2 is the Signal port for RFID antenna W0, W1 is for wiegand protocol, but this library ...

Abstract: In a shopping mart, imagine ten people waiting in line. If the first five people have many items in their carts, the last person with only one or two items may wait a long time to pay. To ...

The problematic WWVB radio receiver inside an atomic clock is removed and replaced with an ESP8266 Module and an Arduino sketch which synchronize the clock using the Network Time Protocol. Although ...

Abstract: Today, installing a home security system is a critical study in implementing cutting-edge technology to attain this purpose. One of the most useful technologies to allow remote monitoring of ...