CE 351 Report 3 - LCDs and Sensors
Name: Max Krauss
Email: mtkrauss@fortlewis.edu

Intro: This lab allowed us to us Arduino to implement liquid crystal displays and temperature sensors by ourselves. We also got to code our remote to allow wireless inputs to be used.

Task 1: Display the 'Hello World!' starting from the second rectangle on the same line.
Task 2: Count to 5 and then reset to 0, then start over:


Figure 1 : Code snippet for tasks 1 and 2.



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 below

Figure 2: Code snippet for task 3.



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



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 3: Modified code for task 5.



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


Figure 4: Task 6 verification.

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



Modifications for task 7 were simply changing Hex number inputs to match ones own remote.


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



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.
Record a video for the report.


Figure 5: Code snippets for task 9.

As you can see, I did not implement the DHT11 as my temperature sensor, I used a thermistor. This was hypothetically due to the ISR not allowing the DHT to read temp when called because of some behind the scenes internal code blockage inside of the DHT11. Rightfully so, I switched to the thermistor as it only reads changes in voltage and has nothing going on that would collide with how the ISR works.






Results: This tutorial was challenging and informative which made it more fun to complete. I enjoyed working with the barebones chip as it allowed one to learn the in's and out's of the Arduino board and how it works with the processor. Task 9 took a lot of thought and time but was very satisfying to me once I implemented it correctly!