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This Python script controls 8 GPIO pins on a Raspberry Pi by setting each one to low individually with a 2 second delay in between. It imports the RPi.GPIO library, sets the pin numbering mode, defines the pin list, sets the pins as outputs and initially high, then loops through lowering each pin one by one while printing the number and sleeping for 2 seconds, before cleaning up and ending.
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![#!/usr/bin/python
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
# init list with pin numbers
pinList = [2, 3, 4, 17, 27, 22, 10, 9]
# loop through pins and set mode and state to 'low'
for i in pinList:
GPIO.setup(i, GPIO.OUT)
GPIO.output(i, GPIO.HIGH)
# time to sleep between operations in the main loop
SleepTimeL = 2
# main loop
try:
GPIO.output(2, GPIO.LOW)
print "ONE"
time.sleep(SleepTimeL);
GPIO.output(3, GPIO.LOW)
print "TWO"
time.sleep(SleepTimeL);
GPIO.output(4, GPIO.LOW)
print "THREE"
time.sleep(SleepTimeL);
GPIO.output(17, GPIO.LOW)
print "FOUR"
time.sleep(SleepTimeL);
GPIO.output(27, GPIO.LOW)
print "FIVE"
time.sleep(SleepTimeL);
GPIO.output(22, GPIO.LOW)
print "SIX"
time.sleep(SleepTimeL);
GPIO.output(10, GPIO.LOW)
print "SEVEN"
time.sleep(SleepTimeL);
GPIO.output(9, GPIO.LOW)
print "EIGHT"
time.sleep(SleepTimeL);
GPIO.cleanup()
print "Good bye!"
# End program cleanly with keyboard
except KeyboardInterrupt:
print " Quit"
# Reset GPIO settings
GPIO.cleanup()
# find more information on this script at
# http://youtu.be/oaf_zQcrg7g](https://image.slidesharecdn.com/script-140927102836-phpapp02/85/Script-1-320.jpg)
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- 1. #!/usr/bin/python import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) # init list with pin numbers pinList = [2, 3, 4, 17, 27, 22, 10, 9] # loop through pins and set mode and state to 'low' for i in pinList: GPIO.setup(i, GPIO.OUT) GPIO.output(i, GPIO.HIGH) # time to sleep between operations in the main loop SleepTimeL = 2 # main loop try: GPIO.output(2, GPIO.LOW) print "ONE" time.sleep(SleepTimeL); GPIO.output(3, GPIO.LOW) print "TWO" time.sleep(SleepTimeL); GPIO.output(4, GPIO.LOW) print "THREE" time.sleep(SleepTimeL); GPIO.output(17, GPIO.LOW) print "FOUR" time.sleep(SleepTimeL); GPIO.output(27, GPIO.LOW) print "FIVE" time.sleep(SleepTimeL); GPIO.output(22, GPIO.LOW) print "SIX" time.sleep(SleepTimeL); GPIO.output(10, GPIO.LOW) print "SEVEN" time.sleep(SleepTimeL); GPIO.output(9, GPIO.LOW) print "EIGHT" time.sleep(SleepTimeL); GPIO.cleanup() print "Good bye!" # End program cleanly with keyboard except KeyboardInterrupt: print " Quit" # Reset GPIO settings GPIO.cleanup() # find more information on this script at # http://youtu.be/oaf_zQcrg7g