Arduino Uno or any other Arduino I2C LCD MFRC522 RFID Reader Tags SG90 Servo motor 4X4 Keypad or 4X3 Keypad 3 X LED’s (Red, Green, Blue) 3 X 220 ohm resistors Buzzer 6 to 12V Power source (I have used ...

Complete Arduino RFID tutorial using RC522 module. Learn wiring, programming, and build practical projects like door locks. Code examples included.

In order to use I2C devices you must enable the interface on your Raspberry Pi. This can be done by following my “Enabling The I2C Interface On The Raspberry Pi” tutorial. By default the I2C backpack ...

Every organisation needs an attendance system to obtain data about its working hours and also keep track of its employee’s punch in and out times. With state-of-the-art technology, this is becoming ...

I am guessing that you have an Arduino Uno board handy. Even though most of the available libraries (for PN532) are focused primarily on Arduino Mega, I still prefer the Uno, as it’s more comfortable ...

DISPLAY LCD 4 x 20 command TWI (I²C compatible)INTRODUCTION: DISPLAY LCD 4 x 20 command TWI (I²C compatible) INTRODUCTION: We all know how the free pins microcontrollers are precious. The use of an ...

Her code allows you to configure the type and number of RFID cards required to trigger one of the Arduino’s digital pins, which usually would be connected to a relay to fire off whatever device ...