This Project is made from a project on this website(https://www.instructables.com/id/Arduino-LED-Dice-...)

I made some changes to make this project better and easier to use with a count down sequence made of there leds and a speaker that buzzes after every count down.

Here is my code https://create.arduino.cc/editor/joseph940207/9106c8a5-03fb-4576-9920-f80602c9c11c/preview

Step 1: What You Will Need

9 100ohm resistors

1 10kohm resistor

1 Arduino Leonardo

1 breadboard

6 same color leds

3 same color leds but different color from the above 6 leds

1 speaker

1 button

14 jump wires

Step 2: Make It Real!

connect a jumper wire from the pin 2 on the upper row of the logicboard and route it to the breadboard, connect the wires with a led's longer leg and then connect the shorter leg to the ground

connect a jumper wire from the pin 3 on the upper row of the logicboard and route it to the breadboard, connect the wires with a led's longer leg and then connect the shorter leg to the ground

connect a jumper wire from the pin 4 on the upper row of the logicboard and route it to the breadboard, connect the wires with a led's longer leg and then connect the shorter leg to the ground

repeat this process until you finish routing 9 of these

(the first 6 leds on the right are used to display the number that you diced and the last 3 leds on the left will be the leds that display the count down)

At last, connect the speak and the button as shown above