Week 7 - Journal

Ideation

Tell us about your assignment's idea for this week. Why do you care about this idea? What inspired you? (Please include images or links to sources of inspiration)

This week's project is to make an electronic circuit with 2 input and 2 output

Mine will be the restricted area alarm which will give an alarm sound when u get into the restricted area

Ultrasonic Alarm

Tool Chain

Which software/machines/materials did you use in the assignment? Why?

Software

open source online platform we can use it to make the circuits and simulate them before building them which will be time saving ,easier to troubleshoot and saving the parts from burning in case of false connection

Arduino IDE

an open-source software, which is used to program the Arduino boards, it is an integrated development environment, developed by

Arduino. cc.

Allow to write and upload code to Arduino boards.

It consists of many libraries and a set of examples of mini-projects.

Materials

For the Electronic Circuit

Small breadboard For wiring

usb Cable to connect Arduino to the PC

Arduino

Male Wires

Resistance

Slide Switch

LED

Ultrasonic Sensor

Buzzer

Design/Preparation Process

Explain the design and/or preparation process of your assignment. How did you use the tool or software to design and/or prepare your assignment before fabrication/implementation?

This is the idea of the alarm that it has

slide switch (Input)
Ultrasonic Sensor (Input)
Red LED (Output)
yellow LED (Output)
Green LED (Output)
Buzzer (Output)

If the switch is High

the sensor has 3 levels

within the allowed area, it will light the green Led
within a closer area to the sensor, it will light up a yellow LEd which means you are moving toward a restricted area
finally, if you move toward the restricted area, it will Light up the Red LED and give a Beep sound which means you are trespassing in a restricted area

If the switch is Low, the alarm is off

First, I had to simulate the circuit on TinkerCad before wiring it

choose the objects for the circuit

Slide Switch (Input)
Ultrasonic Sensor (Input)
Arduino (Processing)
Red LED (Output)
yellow LED (Output)
Green LED (Output)
Buzzer (Output)

Connect the +ve and -ve of Arduino to the +ve and -ve of the Board
connect From the +ve of the board to 1st terminal of the switch, the -ve of the board to the 3rd terminal, and the second (middle) terminal to pin 8 of the Arduino
connect the -ve of the buzzer to the -ve of the board and +ve to pin 7 in Arduino
connect a 220-ohm resistance to the cathode of the LED and then Attached it to the board -ve Part
connect the anode of the Green LED to pin 6 in the Arduino
connect the anode of the Yellow LED to pin 5 in the Arduino
connect the anode of the Red LED to pin 4 in the Arduino
Connect the +ve of the Sensor to the Board +ve and Ground to the board -ve
attached trigger to pin 3 of the Arduino and echo to pin2

Using Arduino IDE , we will start our code

First part of the code will be defining the variables

I assigned the name and the pin number to each variable

we started the void setup by starting the serial monitor then defining the pin mode of the variables to be either input or output

Then we begin the void loop by defining the sensor and set it values in order to deal with trigger and echo pins so finally it can give us an OUTPUT in CM

after that , it begin to take input from slide switch which have 2 cases

if it's LOW, nothing will happen , the LED and Buzzer will e set to LOW so no Action will be taken

if it's HIGH, it will take another actions we will discuss later in the code

so this if condition checks the case of the switch

in this case , the input switch is set to be HIGH, so it will start checking for the other INPUT(Ultra sonic sensor)

if the sensor reads something within the range of less than or equal 50 cm , it will Light up the Green LED

If not, the LED will be set to low

in this case , the input switch is set to be HIGH and it will start checking for the other INPUT(Ultra sonic sensor)

if the sensor reads something within the range of less than or equal 20 cm , it will Light up the Yellow LED

If not, the LED will be set to LOW

in this case , the input switch is set to be HIGH and it will start checking for the other INPUT(Ultra sonic sensor)

if the sensor reads something within the range of less than or equal 5 cm , it will Light up the RED LED and Gives a buzzer sound

If not, the LED will be set to LOW

the final part of the code is the case of the range of distance is more 5 or less than or equal 0,it will print (Outside the permissible range of distances) and gives no sound

otherwise it will print the distance and gives a buzzer sound

Development/Implementation Process

Explain the development/implementation process of your assignment. How did you use the machine/tool to manufacture or implement the design of your assignment?

This one is the same circuit simulated on Tinker CAD and the video below is the demonstration of the functional Circuit

Overcoming Challenges

What kinds of challenges or problems did you face while doing the assignment, tutorials, or exercises? How did you solve them? Did you ask for help from an instructor or peer? Please provide a link to the tutorial or article that you used to solve your problem (if any)

one of the challenges I faced was the code defining the ultrasonic sensor

this was the code i found and when i compiled it , the feature wasn't working so i searched for the code again

this is the right code , so i made those edits to the code and it worked

Final Project

How can you use the skills and knowledge that you've acquired this week in your final project?

i learned on how can I utilize the software Like TinkerCAD and make a simulation before wiring so we save the components from burning

Assignment Design Files

Tinker CAD circuit link

Arduino Code

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