Arduino 1-hand Reaction Training Machine

This is a project for training 1 hand reaction.
The purpose of making it is for playing music games on 1 hand.

You need

-4 button

-4 LED light

-4 220 ohm resistors

-4 Ohm 1/4W Precision Resistor

-22 wires

-1 20 * 15 box

connect components from the picture.

Enter the Arduino Code below into your Arduino.

void setup(){ // put your setup code here, to run once: pinMode( random( 9 , 12 ) , OUTPUT); // sets the digital pin as output}void loop(){ // put your main code here, to run repeatedly: digitalWrite( random( 9 , 12 ) , HIGH ); // sets the digital pin on/off delay( 1000 ); // waits a few milliseconds digitalWrite( random( 9 , 12 ) , LOW ); // sets the digital pin on/off delay( 1000 ); // waits a few milliseconds}

Find or make a box to hold your Arduino, you need to cut 4 ４cm * 3.5 cm holes for buttons and another 4

1cm* 1cm holes for LED light.