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 ...

For this project you will need 1 Arduino UNO R3, 1 Piezo, 1 Red LED, 1 220 Ω Resistor and 1 1 kΩ Resistor.

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 ...

The game display is built from an Arduino, some LEDs and an Altoids tin, while the buzzer pushbuttons were salvaged from an old radio broadcast console. Now, when a question is posed, the salesman ...

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 ...