{"id":530,"date":"2018-11-24T19:08:26","date_gmt":"2018-11-24T18:08:26","guid":{"rendered":"https:\/\/www.honey-pi.de\/?p=530"},"modified":"2021-02-07T21:40:08","modified_gmt":"2021-02-07T20:40:08","slug":"honeypi-led","status":"publish","type":"post","link":"https:\/\/honey-pi.de\/en\/honeypi-led\/","title":{"rendered":"LED (optional)"},"content":{"rendered":"\n<p>Is the HoneyPi and measuring mode or in maintenance mode? An LED light integrated in the housing can provide information about this. The light signals when switching between maintenance and measurement. <\/p>\n\n\n\n<p>The pre-installed green LED on the Raspberry Pi indicates the following:<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><thead><tr><th>Function<\/th><th>LED<\/th><\/tr><\/thead><tbody><tr><td>maintenance mode (&#8220;HoneyPi&#8221;-WiFi avaiable)<\/td><td>? lights up<br><\/td><\/tr><tr><td>measuring mode <\/td><td>\u26ab does not light up<\/td><\/tr><tr><td>button has been pressed and the switchover between measurement and maintenance is complete<\/td><td>\u26ab? \u26ab short flash<\/td><\/tr><tr><td>Raspberry is completely booted up<\/td><td>\u26ab?\u26ab ?\u26ab?\u26ab?\u26ab LED flashes<\/td><\/tr><tr><td>Button was pressed for a long time<\/td><td>\u26ab?\u26ab?\u26ab?\u26ab?\u26ab LED flashes in very shot period. The Raspberry shuts down directly afterwards.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Connection of the additional LED<br><a href=\"https:\/\/www.honey-pi.de\/wp-content\/uploads\/LED-Sketch_Steckplatine.png\"><\/a><\/h3>\n\n\n\n<p>The Raspberry Pi has already installed a very small light emitting diode. Therefore this additional LED is not absolutely necessary. However, it can be helpful if you want to give your housing this additional status indicator.<\/p>\n\n\n\n<p>An LED can be connected to the GPIO21 (PIN 40). Once the maintenance mode is active, the GPIO21 will have approximately 3.3V.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.honey-pi.de\/wp-content\/uploads\/LED-Sketch_Steckplatine.png\" alt=\"\" class=\"wp-image-537\" width=\"363\" height=\"512\" srcset=\"https:\/\/honey-pi.de\/wp-content\/uploads\/LED-Sketch_Steckplatine.png 690w, https:\/\/honey-pi.de\/wp-content\/uploads\/LED-Sketch_Steckplatine-212x300.png 212w, https:\/\/honey-pi.de\/wp-content\/uploads\/LED-Sketch_Steckplatine-660x933.png 660w\" sizes=\"auto, (max-width: 363px) 100vw, 363px\" \/><\/figure>\n\n\n\n<ul class=\"wp-block-list\"><li><strong>LED<\/strong> <ul><li>Pin 40\/GPIO21<\/li><li>Pin 30\/GND <\/li><\/ul><\/li><li>For the other sensors see <a href=\"https:\/\/www.honey-pi.de\/schaltplan-und-sensoren\/\">wiring diagram and sensors<\/a>.<\/li><\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Required components for this extension:<\/h3>\n\n\n\n<ul class=\"wp-block-list\"><li><a rel=\"noreferrer noopener\" href=\"https:\/\/amzn.to\/2P129cj\" target=\"_blank\">5mm LED&nbsp;?<\/a><\/li><li>Alternatively: <a rel=\"noreferrer noopener\" href=\"https:\/\/amzn.to\/2USkfA1\" target=\"_blank\">Pushbutton with integrated LED ?<\/a><\/li><li><a rel=\"noreferrer noopener\" href=\"https:\/\/amzn.to\/2P129cj\" target=\"_blank\">330Ohm resistor ?<\/a><\/li><\/ul>\n\n\n\n<figure><iframe src=\"\/\/ws-eu.amazon-adsystem.com\/widgets\/q?ServiceVersion=20070822&#038;OneJS=1&#038;Operation=GetAdHtml&#038;MarketPlace=DE&#038;source=ss&#038;ref=as_ss_li_til&#038;ad_type=product_link&#038;tracking_id=honeypi-21&#038;language=de_DE&#038;marketplace=amazon&#038;region=DE&#038;placement=B01J79YG8G&#038;asins=B01J79YG8G&#038;linkId=7e291f17f0e3ad58a53572b5cd200b2c&#038;show_border=true&#038;link_opens_in_new_window=true\" style=\"width:150px;height:250px\"><\/iframe><\/figure>\n\n\n\n<p class=\"has-text-align-right\"><em>Translated 11.08.2019 by JK<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Is the HoneyPi and measuring mode or in maintenance mode? An LED light integrated in the housing can provide information about this. The light signals when switching between maintenance and measurement. The pre-installed green LED on the Raspberry Pi indicates the following: Function LED maintenance mode (&#8220;HoneyPi&#8221;-WiFi avaiable) ? lights up measuring mode \u26ab does not light up\u2026 <span class=\"read-more\"><a href=\"https:\/\/honey-pi.de\/en\/honeypi-led\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":2115,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[16],"class_list":["post-530","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-component","tag-sensor"],"translation":{"provider":"WPGlobus","version":"3.0.2","language":"en","enabled_languages":["de","en"],"languages":{"de":{"title":true,"content":true,"excerpt":false},"en":{"title":true,"content":true,"excerpt":false}}},"_links":{"self":[{"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/posts\/530","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/comments?post=530"}],"version-history":[{"count":33,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/posts\/530\/revisions"}],"predecessor-version":[{"id":2264,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/posts\/530\/revisions\/2264"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/media\/2115"}],"wp:attachment":[{"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/media?parent=530"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/categories?post=530"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/tags?post=530"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}