Added comments in assignment-5 code to indicate where files will be saved and running commands one by one manually.

Practical/Assignment-3/IoT - Code-3.py

@@ -13,14 +13,17 @@ import time
 GPIO.setmode(GPIO.BCM)
 GPIO.setwarnings(False)
 GPIO.cleanup()
-GPIO.setup(16,GPIO.IN)
+GPIO.setup(16,GPIO.IN) # For IR sensor
+GPIO.setup(26,GPIO.OUT) # For LED
 
 try: 
    while True:
       if (GPIO.input(16)):
           print("No object")
+          GPIO.output(26,GPIO.LOW) # LED OFF when no object detected
       else:
           print("Object Detected")
+          GPIO.output(26,GPIO.HIGH) # LED ON when object detected
 except KeyboardInterrupt:
     GPIO.cleanup()
 # END OF CODE

Practical/Assignment-4/IoT - Code-4.py

@@ -6,6 +6,13 @@ Problem Statement: Temperature and humidity sensing using DHT11.
 Code from InternetOfThingsAndEmbeddedSystems (SPPU - Third Year - Computer Engineering - Content) repository on KSKA Git: https://git.kska.io/sppu-te-comp-content/InternetOfThingsAndEmbeddedSystems
 """
 
+# NOTE: PLEASE REFER DHT11 repo by notkshitij for initialization: https://git.kska.io/notkshitij/DHT11/
+
+# This code will only work in the virtual environment
+# To enable the virtual environment, change current working directory using 'cd <DIR>'
+# Activate the virtual environment using 'source bin/activate'
+# Run this code 'python3 IoT\ -\ Code-4.py'
+
 # BEGINNING OF CODE
 # NOTE: GPIO PIN 16 used
 
@@ -29,6 +36,8 @@ try:
       print("Humidity: %-3.1f %%" % result.humidity)
     else:
       print("Error: %d" % result.error_code)
+      # Error 1 implies sensor not detected, thus no data 
+      # Error 2 implies checksum error, data corrupted, i.e. GPIO connection might be lose
     time.sleep(3)
 except KeyboardInterrupt:
   print("Program stopped by user.")

Practical/Assignment-5/IoT - Code-5.sh

@@ -8,6 +8,9 @@ Code from InternetOfThingsAndEmbeddedSystems (SPPU - Third Year - Computer Engin
 
 # BEGINNING OF CODE
 
+# Run these command one by one manually in the terminal.
+# Image and video file will be saved in Desktop directory of the cuurent user.
+
 cd /home/$(whoami)/Desktop/ # Changing current working directory to Desktop
 raspicam-still -o test.jpg # Image
 libcamera-vid --codec h254 vid.h264

README.md

@@ -19,7 +19,6 @@
 3. [Assignment-3](https://git.kska.io/sppu-te-comp-content/InternetOfThingsAndEmbeddedSystems/src/branch/main/Practical/Assignment-3/)
 4. [Assignment-4](https://git.kska.io/sppu-te-comp-content/InternetOfThingsAndEmbeddedSystems/src/branch/main/Practical/Assignment-4/)
 5. [Assignment-5](https://git.kska.io/sppu-te-comp-content/InternetOfThingsAndEmbeddedSystems/src/branch/main/Practical/Assignment-5/)
-6. [Assignment-6](https://git.kska.io/sppu-te-comp-content/InternetOfThingsAndEmbeddedSystems/src/branch/main/Practical/Assignment-6/)
 
 ## Question Papers
 - [IN-SEM](https://git.kska.io/sppu-te-comp-content/InternetOfThingsAndEmbeddedSystems/src/branch/main/Question%20Papers/IN-SEM)