ELEC$100$ Introduction to Electrical and Electronics Engineering

Fall $2023$

Date: January $5,2024$

Due Date: January $12,11$:$59$ P$.$M$.[$Late submissions are NOT allowed$]$

$[$Please complete all circuit implementations and code writing on Tinkercad, and submit the pictures of the circuits you implemented and all the Arduino codes in a pdf file on Blackboard.$]$

ARDUINO HOMEWORK $2$

Question $1[50$ pts$]$:

D$$sign a project using an Arduino, a photoresistor sensor$,$ two LEDs $($green and red$),$ two $100$ resistors, and one $10K$ resistor in Tinkercad. The project should function as follows:

a$)$ If the luminosity detected by the photoresistor is over the threshold of $100,$ the red LED will be illuminated. Otherwise, the green LED will be illuminated.

$($Include your circuit design and code$)$

b$)$ Additionally, add a code for serial printing to display the readings of sensor in the serial monitoring screen.

$($Include the code and a screenshot of the serial monitoring output$)$

Question $2[50$ pts$]$:

Create an Arduino program that utilizes ultrasonic sensors to measure distance. If the measured distance is less than $60cm,$ turn on a red LED and print "Too close." If the distance falls within the range of $60cm$ to $200cm,$ turn on a yellow LED and print "Warning." If the distance exceeds $200cm,$ turn on a green LED and print "Safe."