Week 6

Ideation

It was my first time using Arduino so I wanted to know what I will do in the final project, and make the primary function which was the dim light, and a small screen to be more interactive. Hope you like it

Tool Chain

Tinker cad to simulate and build Arduino code

Arduino ide to upload code to the board

Small breadboard to connect all components solderless

Some jumpers

Resistor to adjust the voltage and current

3mm led

Arduino UNO r3 to control all the components with code

LDR module

16*2 lcd with I2C module

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?

First I made a LDR module that I found on the internet

using photoresistor and 4.7k ohm resistor

Second, I put 2 LEDs and a 220-ohm resistor to modify the volt to 3V

and connect the anode to Arduino using port 3~ to send an analog and digital signal

note: that's not the optimal way to turn 2 LEDs, you should connect one resistor to each of the LEDs, but my purpose is to have a bright light only

then build the code using the blocks, it was simply if the analog signal coming from LDR is greater than 750 (getting dark)

turn on in 3 to the mapping analog signal

if not then close the led

Then I decided to put a screen to be more interactive

I put SCL on A5 , SDA on A4

and GND and VCC to GND and 5V

Finally, modify the code to include the screen and print some words you can see in the next video it's talking It's A LIFFFEEE 🤩🤩

Development/Implementation Process

First I connect the 3mm LED like tinker cad

Put the anode to 3~

Second was to connect the LDR VCC and GND

and connect the analog signal to A0

that's the circuit without the screen

finally I connected the LCD

GND and VCC on the breadboard

and SCL on A5 , SDA on A4

that's the circuit with the screen

Copied the code from Tinkercad

Past and upload the code to Arduino with Arduino ide

and worked as expected

Overcoming Challenges

The First challenge was that tinker cad doesn't have LDR module so I google it and find a way to make it on Instructables

Second challenge was that it was my first time using LCD so I had to read a full article about it and the i2c module and how to connect and code it with liquid crystal i2c library

If it is your first time using the LCD like me I highly recommend this tutorial on last minute engineers

Final Project

The project doing it's purpose perfectly, when the light is off the LDR sense the dark and turn on the LED (the LED is fading on and off with the incoming data from LDR, at is getting darker the LED going brighter)

and the LCD print "It's dark here, getting light on" to be more user friendly and give you a feedback