Updated to Python3

Code/1-helloworld.py

@@ -1,2 +1,2 @@
-#Print Hello World!
-print "Hello World!"
+# Print Hello World!
+print("Hello World!")

Code/2-LEDBuzz.py

@@ -1,3 +1,6 @@
+# CamJam Edukit 2 - Sensors
+# Worksheet 2 - LEDs and Buzzer
+
 # Import Python libraries
 import RPi.GPIO as GPIO
 import time
@@ -11,15 +14,15 @@
 GPIO.setup(24, GPIO.OUT)
 GPIO.setup(22, GPIO.OUT)
 
-print "Lights and sound on"
+print("Lights and sound on")
 GPIO.output(18, GPIO.HIGH)
 GPIO.output(24, GPIO.HIGH)
 GPIO.output(22, GPIO.HIGH)
 
 # Pause for one second
 time.sleep(1)
 
-print "Lights and sound off"
+print("Lights and sound off")
 GPIO.output(18, GPIO.LOW)
 GPIO.output(24, GPIO.LOW)
 GPIO.output(22, GPIO.LOW)

Code/3-temperature.py

@@ -1,3 +1,6 @@
+# CamJam EduKit 2 - Sensors
+# Worksheet 3 - Temperature
+
 # Import Libraries
 import os
 import glob
@@ -15,7 +18,7 @@
 # A function that reads the sensors data
 def read_temp_raw():
     f = open(device_file, 'r') # Opens the temperature device file
-    lines = f.readlines() # Returns the text 
+    lines = f.readlines() # Returns the text
     f.close()
     return lines
 

Code/4-LDR.py

@@ -1,26 +1,29 @@
+# CamJam EduKit 2 - Sensors
+# Worksheet 3 - Light
+
 # Import Libraries
 import time
 import RPi.GPIO as GPIO
 
-# Set the GPIO Mode and set the pin to use for the 
+# Set the GPIO Mode and set the pin to use for the
 GPIO.setmode(GPIO.BCM)
 GPIO.setwarnings(False)
 
 # A variable with the LDR reading pin number
 PINLDR = 27
- 
+
 def ReadLDR():
     LDRCount = 0 # Sets the count to 0
     GPIO.setup(PINLDR, GPIO.OUT)
     GPIO.output(PINLDR, GPIO.LOW)
     time.sleep(0.1) # Drains all charge from the capacitor
 
     GPIO.setup(PINLDR, GPIO.IN) # Sets the pin to be input
-    # While the input pin reads ‘off’ or Low, count
+    # While the input pin reads 'off' or Low, count
     while (GPIO.input(PINLDR) == GPIO.LOW):
         LDRCount += 1 # Add one to the counter
     return LDRCount
- 
-while True:                                                                         
-    print ReadLDR()
+
+while True:
+    print(ReadLDR())
     time.sleep(1) # Wait for a second

Code/5-PIR.py

@@ -1,3 +1,6 @@
+# CamJam EduKit 2 - Sensors
+# Worksheet 2 - Movement
+
 # Import Python header files
 import RPi.GPIO as GPIO
 import time
@@ -9,7 +12,7 @@
 # Set a variable to hold the GPIO Pin identity
 PinPIR = 17
 
-print "PIR Module Test (CTRL-C to exit)"
+print("PIR Module Test (CTRL-C to exit)")
 
 # Set pin as input
 GPIO.setup(PinPIR, GPIO.IN)
@@ -19,32 +22,32 @@
 Previous_State = 0
 
 try:
-    print "Waiting for PIR to settle ..."
+    print("Waiting for PIR to settle ...")
     # Loop until PIR output is 0
-    while GPIO.input(PinPIR)==1:
+    while GPIO.input(PinPIR) == 1:
         Current_State = 0
 
-    print "    Ready”
+    print("    Ready")
     # Loop until users quits with CTRL-C
     while True:
         # Read PIR state
         Current_State = GPIO.input(PinPIR)
 
         # If the PIR is triggered
-        if Current_State==1 and Previous_State==0:
-            print "    Motion detected!"
+        if Current_State == 1 and Previous_State == 0:
+            print("    Motion detected!")
             # Record previous state
-            Previous_State=1
+            Previous_State = 1
         # If the PIR has returned to ready state
-        elif Current_State==0 and Previous_State==1:
-            print "    Ready"
-            Previous_State=0
+        elif Current_State == 0 and Previous_State == 1:
+            print("    Ready")
+            Previous_State = 0
 
         # Wait for 10 milliseconds
         time.sleep(0.01)
 
 except KeyboardInterrupt:
-    print "    Quit"
+    print("    Quit")
 
     # Reset GPIO settings
     GPIO.cleanup()

Code/6-Alarm.py

@@ -1,3 +1,6 @@
+# CamJam EduKit 2 - Sensors
+# Worksheet 6 - Alarm
+
 # Import Python header files
 import RPi.GPIO as GPIO
 import time
@@ -11,7 +14,7 @@
 PinBlueLED = 24
 PinBuzzer = 22
 
-print "PIR Module Test (CTRL-C to exit)"
+print("PIR Module Test (CTRL-C to exit)")
 
 # Set pins as input/output
 GPIO.setup(PinPIR, GPIO.IN)
@@ -24,44 +27,44 @@
 Previous_State = 0
 
 try:
-    print "Waiting for PIR to settle ..."
+    print("Waiting for PIR to settle ...")
     # Loop until PIR output is 0
-    while GPIO.input(PinPIR)==1:
+    while GPIO.input(PinPIR) == 1:
         Current_State    = 0
 
-    print "Ready"
+    print("    Ready")
     # Loop until users quits with CTRL-C
     while True :
         # Read PIR state
         Current_State = GPIO.input(PinPIR)
 
-        if Current_State==1 and Previous_State==0:
+        if Current_State == 1 and Previous_State == 0:
             # PIR is triggered
-            print "    Motion detected!"
+            print("    Motion detected!")
             # Flash lights and sound buzzer three times
-            for x in range(0,3):
-                GPIO.output(PinBuzzer, GPIO.HIGH)
-                GPIO.output(PinRedLED, GPIO.HIGH)
-                time.sleep(0.2)
-                GPIO.output(PinRedLED, GPIO.LOW)
-                GPIO.output(PinBlueLED, GPIO.HIGH)
-                time.sleep(0.2)
-                GPIO.output(PinBlueLED, GPIO.LOW)
-                GPIO.output(PinBuzzer, GPIO.LOW)
-                time.sleep(0.2)
-            
+            for x in range(0, 3):
+                 GPIO.output(PinBuzzer, GPIO.HIGH)
+                 GPIO.output(PinRedLED, GPIO.HIGH)
+                 time.sleep(0.2)
+                 GPIO.output(PinRedLED, GPIO.LOW)
+                 GPIO.output(PinBlueLED, GPIO.HIGH)
+                 time.sleep(0.2)
+                 GPIO.output(PinBlueLED, GPIO.LOW)
+                 GPIO.output(PinBuzzer, GPIO.LOW)
+                 time.sleep(0.2)
+
             # Record previous state
-            Previous_State=1
+            Previous_State = 1
 
-        elif Current_State==0 and Previous_State==1:
+        elif Current_State == 0 and Previous_State == 1:
             # PIR has returned to ready state
-            print "    Ready"
-            Previous_State=0
+            print("    Ready")
+            Previous_State = 0
 
         # Wait for 10 milliseconds
         time.sleep(0.01)
 
 except KeyboardInterrupt:
-    print "Quit" 
+    print("    Quit")
     # Reset GPIO settings
     GPIO.cleanup()