Red LED lights up for access denied. Audio feedback with a buzzer for different access responses. LCD Display (16x2) to show user prompts and results. Upload the Arduino code to your board. Connect ...

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 ...

LED is connected with the PIN 2 of the Arduino UNO with 220-ohm resistor to limit the current to a safe value. And, the buzzer is directly connected to the PIN 3 of the Arduino UNO. The complete ...

Here, in this code, I use millis() to do multitasking for both led blink and buzzer beep tasks. If you are hearing multitasking in Arduino newly, I recommended you to check out this Arduino ...

Each animation has a different Arduino code, but you won't need to modify ... With each contact you make, the red LED lights up, the buzzer beeps and the seven-segment LED display counts up.

Inside the cool laser-cut box is an Arduino Uno and a 9V battery, plus a current-limiting resistor and the all-important buzzer. We like how [newsonator] wired up the LEDs to the Arduino by ...

This project turns on and turns off a laser LED ... Arduino programming language. Arduino IDE 1.6.4 is used to compile and upload the program/sketch. ATmega328P on Arduino Uno comes with a ...