{"id":2200,"date":"2021-09-25T22:29:30","date_gmt":"2021-09-25T22:29:30","guid":{"rendered":"http:\/\/mc.scsiraidguru.com\/?page_id=2200"},"modified":"2024-03-04T00:28:29","modified_gmt":"2024-03-04T00:28:29","slug":"light_emitting","status":"publish","type":"page","link":"https:\/\/mc.scsiraidguru.com\/index.php\/raspberry-pi\/pi_diode\/light_emitting\/","title":{"rendered":"blink"},"content":{"rendered":"\t\t
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class <\/em>gpiozero.<\/code>LED<\/code>(<\/span>pin<\/em>,\u00a0*<\/em>,\u00a0active_high=True<\/em>,\u00a0initial_value=False<\/em>,\u00a0pin_factory=None<\/em>)<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Blink.py is a while loop to blink the LED every one second.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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# basic_i2c_configuration

import RPi.GPIO as GPIO
import time
from smbus import SMBus

bus = SMBus(1) # indicates \/dev\/ic2-1


def destroy():
GPIO.cleanup()


def setup():
while True:
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
red = 24
# GPIO.setmode(GPIO.BOARD)
# red = 18
GPIO.setup(red,GPIO.OUT)
GPIO.output(red,1)
time.sleep(1)
GPIO.output(red,0)
time.sleep(1)


def loop():
print(\"\")


if __name__ == '__main__':
print ('Program is starting...' )
setup()
try:
loop()
except KeyboardInterrupt:
destroy()<\/pre>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Five methods of blinking an LED.\u00a0 I placed a Red LED on GPIO 24 and Blue LED on GPIO 18.\u00a0\u00a0 I could have done the same connection through the single supply logic level converter.\u00a0\u00a0 It could have been 5V for the LED instead of 3.3V.\u00a0\u00a0 <\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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# basic_i2c_configuration

import RPi.GPIO as GPIO
import time
from smbus import SMBus

bus = SMBus(1) # indicates \/dev\/ic2-1


def destroy():
GPIO.cleanup()


def setup():
while True:
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
red = 24
# GPIO.setmode(GPIO.BOARD)
# red = 18
GPIO.setup(red,GPIO.OUT)
GPIO.output(red,1)
time.sleep(1)
GPIO.output(red,0)
time.sleep(1)


def loop():
print(\"\")


if __name__ == '__main__':
print ('Program is starting...' )
setup()
try:
loop()
except KeyboardInterrupt:
destroy()


michael@wpmm22:\/var\/www\/mc.scsiraidguru.com\/public_html\/raspberry_pi\/pi_diode\/light_emitting$
michael@wpmm22:\/var\/www\/mc.scsiraidguru.com\/public_html\/raspberry_pi\/pi_diode\/light_emitting$ ls
blink.jpg blink.py five_method_blink.py
michael@wpmm22:\/var\/www\/mc.scsiraidguru.com\/public_html\/raspberry_pi\/pi_diode\/light_emitting$ sudo cat five_method_blink.py
from gpiozero import LED
from time import sleep
from signal import pause

print(\"init LCD\")
led_red = LED(24)


print(\"Start Blinking LED 10x\")
for x in range(0, 11):
print(\"Turn on LED\")
led_red.on()
sleep(1)
print(\"Turn off LED\")
led_red.off()
sleep(1)


print(\"Second method setting active_high to false blinking 10x\")
led_blue = LED(18, active_high=False)
for x in range(0, 11):
print(\"Turn on LED\")
led_blue.on()
sleep(1)
print(\"Turn off LED\")
led_blue.off()
sleep(1)


print(\"third method with led.toggle for blinking 10x\")

for x in range(0, 11):
led_red.toggle()
sleep(1)

print(\"fourth method uses led.blink to do all functions\")
print(\"Turn on blinking\")
led_red.blink(on_time=1, off_time=1, n=10, background=False)
print(\"turn off blinking\")




print(\"fifth method with led.blink and pause 10x\")
for x in range(0, 11):
print(\"Turn on LED\")
led_red.blink()
pause()<\/pre>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"
class gpiozero.LED(pin,\u00a0*,\u00a0active_high=True,\u00a0initial_value=False,\u00a0pin_factory=None) Blink.py is a while loop to blink the LED every one second. # basic_i2c_configurationimport RPi.GPIO as GPIOimport timefrom smbus import SMBusbus = SMBus(1) # indicates \/dev\/ic2-1def destroy():GPIO.cleanup()def setup():while True:GPIO.setwarnings(False)GPIO.setmode(GPIO.BCM)red = 24# GPIO.setmode(GPIO.BOARD)# red = 18GPIO.setup(red,GPIO.OUT)GPIO.output(red,1)time.sleep(1)GPIO.output(red,0)time.sleep(1)def loop():print(“”)if __name__ == ‘__main__’:print (‘Program is starting…’ )setup()try:loop()except KeyboardInterrupt:destroy() Five methods of blinking an LED.\u00a0 I placed a […]<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2194,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"ocean_post_layout":"","ocean_both_sidebars_style":"","ocean_both_sidebars_content_width":0,"ocean_both_sidebars_sidebars_width":0,"ocean_sidebar":"0","ocean_second_sidebar":"0","ocean_disable_margins":"enable","ocean_add_body_class":"","ocean_shortcode_before_top_bar":"","ocean_shortcode_after_top_bar":"","ocean_shortcode_before_header":"","ocean_shortcode_after_header":"","ocean_has_shortcode":"","ocean_shortcode_after_title":"","ocean_shortcode_before_footer_widgets":"","ocean_shortcode_after_footer_widgets":"","ocean_shortcode_before_footer_bottom":"","ocean_shortcode_after_footer_bottom":"","ocean_display_top_bar":"default","ocean_display_header":"default","ocean_header_style":"custom","ocean_center_header_left_menu":"0","ocean_custom_header_template":"7151","ocean_custom_logo":0,"ocean_custom_retina_logo":0,"ocean_custom_logo_max_width":0,"ocean_custom_logo_tablet_max_width":0,"ocean_custom_logo_mobile_max_width":0,"ocean_custom_logo_max_height":0,"ocean_custom_logo_tablet_max_height":0,"ocean_custom_logo_mobile_max_height":0,"ocean_header_custom_menu":"0","ocean_menu_typo_font_family":"0","ocean_menu_typo_font_subset":"","ocean_menu_typo_font_size":0,"ocean_menu_typo_font_size_tablet":0,"ocean_menu_typo_font_size_mobile":0,"ocean_menu_typo_font_size_unit":"px","ocean_menu_typo_font_weight":"","ocean_menu_typo_font_weight_tablet":"","ocean_menu_typo_font_weight_mobile":"","ocean_menu_typo_transform":"","ocean_menu_typo_transform_tablet":"","ocean_menu_typo_transform_mobile":"","ocean_menu_typo_line_height":0,"ocean_menu_typo_line_height_tablet":0,"ocean_menu_typo_line_height_mobile":0,"ocean_menu_typo_line_height_unit":"","ocean_menu_typo_spacing":0,"ocean_menu_typo_spacing_tablet":0,"ocean_menu_typo_spacing_mobile":0,"ocean_menu_typo_spacing_unit":"","ocean_menu_link_color":"","ocean_menu_link_color_hover":"","ocean_menu_link_color_active":"","ocean_menu_link_background":"","ocean_menu_link_hover_background":"","ocean_menu_link_active_background":"","ocean_menu_social_links_bg":"","ocean_menu_social_hover_links_bg":"","ocean_menu_social_links_color":"","ocean_menu_social_hover_links_color":"","ocean_disable_title":"default","ocean_disable_heading":"default","ocean_post_title":"","ocean_post_subheading":"","ocean_post_title_style":"","ocean_post_title_background_color":"","ocean_post_title_background":0,"ocean_post_title_bg_image_position":"","ocean_post_title_bg_image_attachment":"","ocean_post_title_bg_image_repeat":"","ocean_post_title_bg_image_size":"","ocean_post_title_height":0,"ocean_post_title_bg_overlay":0.5,"ocean_post_title_bg_overlay_color":"","ocean_disable_breadcrumbs":"default","ocean_breadcrumbs_color":"","ocean_breadcrumbs_separator_color":"","ocean_breadcrumbs_links_color":"","ocean_breadcrumbs_links_hover_color":"","ocean_display_footer_widgets":"default","ocean_display_footer_bottom":"default","ocean_custom_footer_template":"0","osh_disable_topbar_sticky":"default","osh_disable_header_sticky":"default","osh_sticky_header_style":"default","osh_sticky_header_effect":"","osh_custom_sticky_logo":0,"osh_custom_retina_sticky_logo":0,"osh_custom_sticky_logo_height":0,"osh_background_color":"","osh_links_color":"","osh_links_hover_color":"","osh_links_active_color":"","osh_links_bg_color":"","osh_links_hover_bg_color":"","osh_links_active_bg_color":"","osh_menu_social_links_color":"","osh_menu_social_hover_links_color":"","footnotes":""},"class_list":["post-2200","page","type-page","status-publish","hentry","entry"],"yoast_head":"\nblink - 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