CE 351 Spring 2022
Homework 3
Name: David Lee
Email: djlee1@fortlewis.edu

LEDs and SSDs
Introduction:
In this homework assignment we use Arduino to write code to make an LCD, Sensors and Actuators work on a bread board.

Materials and Methods:
Using Arduino Software and hardware we perform a series of tasks that make different patterns on the LCD, using different sensors

Results:

Task 1: Display "Hello World!" on the LCD Display.


Figure 1: Show Hello world on the LCD Display

Task 2: Count to 5 and then reset to 0 and start over.



Figure 2: A video of the couting.

Task 3: Given that the command 'lcd.clear()' will clear out everything on the LCD. Modify the code to implement the scrolling text as presented in the video



Figure 3: Shows the Video of the Task

Task 4: Repeat the work above, show room temperature on the LCD. Use your finger to warm it up see if it changes



Figure 4: Shows the Thermistor reading the temperature differnce and printing on LCD


Task 5: Modify the code to display in the form below. Simply blow at the sensor to change the temperature and the humidity to test it. Show a demonstration video in your report.



Figure 5: Shows the DTH11 working and the LCD Displaying both the Temperature and Humidity

Task 6:Repeat the work above to display temperature data from TMP36.


Figure 6: Shows the video of the task

Task 7: Modify the example code to match your new remote controller


Figure 7: Shows the video of all the keys working on the remote

Task 8: Repeat the work in the demo video above, show your result in a VIDEO for the report



Figure 8: Shows the barebone MCU working to blink an LED

Task 9: Use the barebone ATMega 328p to build a portable digital temperature meter. Use an Interrupt Service Routine to update the temperature display. The temperature/humidity sensor is the DHT11, the display unit is the 4-digit 7-segment display.


Figure 9: Shows the video to the DHT11 With 7segment display


Figure 10: Shows the Code to the DHT11 With 7segment display

Figure 11: Shows the Code to the DHT11 With 7segment display

Figure 12: Shows the Code to the DHT11 With 7segment display



Discussion:
This was a great assignment to complete because it showed me what sensors are available to use and how to use them with displays. The most challenging task for me was task 9. As you can see in the video I am able to accuratly get the ones place to show and display but the Tens place only flashes for a short period of time which you can see in the video. This shows that the DHT11 is working and outputing the correct values I just couldnt get the code to loop and work correctly with the 7 segment display.