Week 7 - Journal

I started wiring

using Arduino, breadboard, 3 LEDs, buzzer, and slide switch

The connections

-putting

the buzzer at the breadboard connect its Gun to ground of Arduino at the

breadboard, and the power to 3 pin on Arduino to take the reading of Ultrasonic.

-I connected the three LEDs to the Gun of

Arduino and the power to 9,10,11 pins at Arduino respectively.

- Ultrasonic connected to Gun and 5 V power of

Arduino, Trigger and echo to 5,6 pins on Arduino.

-Side switch connected it to power and ground

of Arduino at the breadboard and the I/O to 2 pin.

I started to write the code

Before any thing I declared the variable.

Then I begin the Serial and declare

every pin if it input or out put.

Finally I started to write the code at void

loop which include the main code (which will be repeated )

I

start with If condition which will include the most of code, will start when

the side switch will be high, and inside this if condition there is

another three if conditions, condition for every LED

First

condition for Yellow LED which will light when the distance between 20 and 15,

and the buzzer will make specific sound.

Second

condition for Green LED which will light when the distance between 15 and 10,

and the buzzer will make another sound which mean the car get closer.

third

condition for Red LED which will light when the distance between 10 and 0, and

the buzzer will make sound which mean there is something bad will gonna happen.

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