Wednesday 24 February 2016

How to Interface LED with BBB using Python Language ???????????


Requirements:



 i)LED
                                                                                 fig.LED

ii)Resistor (470Ω)
                                                                               fig.Resistor

iii)Beagle Bone Black

LED is Light Emitting Diode which can emit light when external power supply is apply to it.
  
Circuit Diagram of LED interfacing:

                                               fig.Circuit Diagram of LED interfacing

 

Steps: 

 

i) connect long terminal (Anode) of led to resistor .

ii) second terminal of resistor is connected to the GPIO pin of BBB.

iii) short terminal(Cathode) of led is connected to the ground.

 

 

Hardware setup of LED Interfacing with BBB :


 

 

Python code to blink single LED :

 
 import Adafruit_BBIO.GPIO as GPIO    # import library 

 import time                          # import time for time delay in second

 GPIO.setup("P9_13", GPIO.OUT)        # Set output pin of BBB 

 while(True):                         # infinite loop is given

      GPIO.output("P9_13", GPIO.HIGH)  # output pin is high

      time.sleep(5)                    # time delay is given
      GPIO.output("P9_13", GPIO.LOW)  # output pin is Low

      time.sleep(5)                   # Time delay is given

 
 

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