This is a simple setup with an Adrduino Uno, 125kHz RFID reader and interface board, relay toggle, 16x2 LCD display, and 125kHz RFID cards. When you scan the card, if authorized, it toggles the relay.

Plug the RFID module into the breadboard with enough space around it. Connect the VCC pin to the Arduino's 3.3V (not 5V), and ...

Arduino Code to Read RFID Card UID To know your Authorized RFID ... After that, it prints “Door Locked” on the lcd display. void unlockDoor() { digitalWrite(RELAY_PIN, HIGH); // Turn ON relay (unlock ...

arduino nano, rfid-rc522 module, rtc ds3231 module, buzzer, rfid card/tag, relay, lightbulb dc 12v, led 5mm, resistor 1k, breadboard, jumper cable.

This is an automatic liquid vending machine based on radio-frequency identification (RFID) system. A fixed amount of liquid can be dispensed by swiping an RFID tag across the RFID reader. An ...

Padow] put together an Arduino Uno, SD card, four line character LCD ... monochrome display. Just like decades past, this implementation of BASIC has you start each line of code with a line ...