# Alarm Clock

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Your dream is to create your own alarm clock? If the answer is yes, you are in the right place, because here I will show you step by step the easiest way, so that you can do it.

Our project is based on the "Mundo Projetado" alarm clock. But my group and I made changes. If you want to take a look at the link I'll leave it here: http://mundoprojetado.com.br/despertador-usando-o-....

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## Step 1: Materials

To build the alarm clock, you'll need:

• 1 computer;
• 1 display;
• 1 buzzer
• 1 USB cable;
• 1 arduino
• 1 potentiometer
• 5 buttons
• 7 resistors - their values must be 100, 300, 500, 700, 900, 1.1 k, 1.3 k or very close.
• 22 male-male jumper wires

## Step 2: Build Circuit 1

To build the circuit 1, you'll will need the arduino, the potentiometer and the display. You also will need 15 jumper wires and one of the resistors.

Follow the images that you will succeed!

## Step 3: Build Circuit 2

You have arrived at Circuit 2, where you'll need 5 buttons, 6 remaining resistors and 5 of the jumper wires.

Follow the images that you will succeed!

## Step 4: Build Circuit 3

Now you have arrived at Circuit, ypu'll need the arduino, 2 remaining jumper wires and the buzzer.

Follow the images that you will succeed!

## Step 5: The Code

If you do not already have the Arduino application and TimeLib do these downloads first. After you have done this, copy and paste the code below into a new Arduino document, DO NOT forget to upload the code!

I will give two important tips for you to do:

1. Connect the arduino to yhe computer;
2. Check if you put the jumper wires in the right places of the arduino

Code:

## Step 6: How to Use Alarm Clock

If you got here, congratulations! I'm happy to help you, but now let's go to the last step.

There are three options in the main menu:"Definir alarme", "Mostrar horas" and the last one is "Mudar horas". To choose one, use UP, DOWN and SELECT buttons. You should go to "Mudar as horas" and change the time according to another clock or you cell phone, using the UP, RIGHT, LEFT and SELECT buttons. Then, press SELECT to go back to main menu. Now, go to "Definir alarme" to set the alarm. Using the LEFT, RIGHT and SELECT buttons, choose when you want the alarm to ring. When it does, the buzzer will ring untill you press SELECT to stop it.

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## 2 Discussions

Very nice job with your first Instructable! Looks like a fun project :)