Added RapberryPi project

Program's_Contributed_By_Contributors/Python_Programs/Raspberrypi_LED.py

@@ -0,0 +1,48 @@
+#Created by Akshar Singh
+#IMPORTANT - CAN ONLY WORK ON RASPBERRY PI OPERATING SYSTEM
+import RPi.GPIO as GPIO
+from time import sleep
+
+#GPIO.setwarnings(False)
+GPIO.setmode(GPIO.BOARD) #use phyical pin numbering
+
+c = 0
+#Light on
+def lighton():
+ GPIO.setup(8,GPIO.OUT,initial=GPIO.LOW)#spicifies the pin number to be the output pin
+#initial value is low(OFF)
+ c=c+1
+ while True:
+    GPIO.output(8,GPIO.HIGH)
+
+#Light off
+def lightoff():
+ if(c==1):
+    GPIO.output(8,GPIO.LOW)
+
+#Blinking
+def lightblink():
+ GPIO.setup(8,GPIO.OUT,initial=GPIO.LOW)
+ while True: #running forever
+    GPIO.output(8,GPIO.HIGH) #Turn on 
+    sleep(1) 
+    GPIO.output(8,GPIO.LOW) #Turn off
+    sleep(1)
+    #light is on for 1 sec and then gets off for 1 second
+
+#Control Brightness
+def brightness():
+#GPIO.PWM(PIN NUMBER,MAX BRIGHTNESS)
+ GPIO.setup(8,GPIO.OUT,initial=GPIO.HIGH)
+ P = GPIO.PWM(8,100) #PWM - Pulse width modulation(reducing avg power delivered by an electrical signal)
+ P.start(0) #LED starts with 0 % brightness
+
+ while True:
+    #LED's brightness is increasing gradually
+    for i in range(100):
+        P.start(i)
+        sleep(0.5)
+    #LED's brightness is decreasing gradually
+    for i in range(100):
+        P.start(100-i)
+        sleep(0.5)