Basic Raspberry PI Projects

How to blink an LED using Raspberry Pi and the Python Software?

1. Gather all electronics materials and make the led-resistor circuit first.
    Connection: Pin 18 > Led > Resistor > Ground.



2. Open the Raspbian icon menu, select programming and choose Python Idle

3. Once python is open, click File > New File

4. Copy and paste the code (to turn on/off led):

import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(18,GPIO.OUT)
#print "Led ON"
GPIO.output(18,GPIO.HIGH)
time.sleep(10)
#print "Led OFF"
GPIO.output(18,GPIO.LOW)

 5. OR, copy and paste this code (to blink the led):

import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(18,GPIO.OUT)

 while True:
 GPIO.output(18, True)      # Turn on pin 18
 time.sleep(1)                    # Delay
 GPIO.output(18, False)     # Turn off pin 18
 time.sleep(1)                    # delay

 #GPIO.cleanup()

6. Then save:  File > Save

7. To run script: Run > Run Module(F5)

8. To interrupt press Ctrl-C or Ctrl-X


If you plan to use the Terminal:
1. Open terminal.
2. Type: ~ nano filename.py
3. Copy either codes (4 or 5) on the text editor.
4. To save: Ctrl-X > Y > enter
5. To run:  ~ sudo python filename.py
6. To stop: Ctrl-C


Raspberry Pi GPIO* :




* GPIO = General Purpose Input Output




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