Arduino: 4 group quiz button

Tool System:

Just as it is used in quizzes when one of the buttons is pressed first, the other button when pressed does not sound. The button used is the push on button numbering 4. Bell and lights are used as markers which button is pressed first. Relay as a lamp and bell driver. Arduino UNO as the processor.

Hardware Requirements:

• 4 Push ON buttons

• 5Vdc Relay Module 4

• Buzzer

• Arduino UNO module

• Power supply + 9Volt