{"id":1400,"date":"2019-05-03T17:00:09","date_gmt":"2019-05-03T15:00:09","guid":{"rendered":"https:\/\/www.honey-pi.de\/?p=1400"},"modified":"2022-03-10T20:14:13","modified_gmt":"2022-03-10T19:14:13","slug":"4x-half-bridge-waegezellen","status":"publish","type":"post","link":"https:\/\/honey-pi.de\/en\/4x-half-bridge-waegezellen\/","title":{"rendered":"4x Half Bridge load cells"},"content":{"rendered":"\n<p>This article shows the wiring of cheaper <strong>&#8220;half bridge load cells&#8221;<\/strong> (YZC-161E). Such half bridge weight sensors are available on Ebay partly even together with a HX711 for only 9\u20ac. On <a href=\"https:\/\/amzn.to\/2ZSz3m7\">Amazon<\/a> they cost about 13\u20ac ? <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Quality<\/h3>\n\n\n\n<p>At constant temperatures, these sensors work okay, but these cheap sensors show a so-called <strong>temperature drift<\/strong>. This means that the measurement result changes with increasing temperature. Therefore <a href=\"\/waegezellen\/\">the better weight sensors<\/a> are to be recommended. <\/p>\n\n\n\n<p>In addition, the measured weight changes over time. If you only want to measure the relative honey yield in a short period of time, this can be sufficient. However, the absolute weight drifts off over a longer period of time.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Compensation of temperature-dependent deviations<\/h3>\n\n\n\n<p>The HoneyPi firmware has a so-called temperature compensation built in, so that the above mentioned deviations can be compensated by a calibration. Read about it <a href=\"\/waegezellen-kalibrieren\/\">here<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Wiring<\/h3>\n\n\n\n<p>Here are some graphics that actually all show the same thing: The wiring of the four half bridges weight sensors. The red cables at the load cells lead to the HX711 (A\/D converter).<\/p>\n\n\n\n<figure class=\"wp-block-image\"><a href=\"https:\/\/www.honey-pi.de\/wp-content\/uploads\/Beehive-scale-HoneyPi-Half-Bridge-Load-Cell_Steckplatine.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"592\" src=\"https:\/\/www.honey-pi.de\/wp-content\/uploads\/Beehive-scale-HoneyPi-Half-Bridge-Load-Cell_Steckplatine-1024x592.png\" alt=\"\" class=\"wp-image-1401\" srcset=\"https:\/\/honey-pi.de\/wp-content\/uploads\/Beehive-scale-HoneyPi-Half-Bridge-Load-Cell_Steckplatine-1024x592.png 1024w, https:\/\/honey-pi.de\/wp-content\/uploads\/Beehive-scale-HoneyPi-Half-Bridge-Load-Cell_Steckplatine-300x173.png 300w, https:\/\/honey-pi.de\/wp-content\/uploads\/Beehive-scale-HoneyPi-Half-Bridge-Load-Cell_Steckplatine-768x444.png 768w, https:\/\/honey-pi.de\/wp-content\/uploads\/Beehive-scale-HoneyPi-Half-Bridge-Load-Cell_Steckplatine-660x381.png 660w, https:\/\/honey-pi.de\/wp-content\/uploads\/Beehive-scale-HoneyPi-Half-Bridge-Load-Cell_Steckplatine.png 2040w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><figcaption>Wiring of the 4 half bridge load cells to the HX711.<\/figcaption><\/figure>\n\n\n\n<p>4x Half Bridge load cells on <a href=\"\/a-d-wandler-hx711\/\">HX711<\/a><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Green A-<\/li><li>Grey A+<\/li><li>Black E-<\/li><li>Red E+<\/li><\/ul>\n\n\n\n<figure><iframe src=\"\/\/ws-eu.amazon-adsystem.com\/widgets\/q?ServiceVersion=20070822&amp;OneJS=1&amp;Operation=GetAdHtml&amp;MarketPlace=DE&amp;source=ss&amp;ref=as_ss_li_til&amp;ad_type=product_link&amp;tracking_id=honeypi-21&amp;language=de_DE&amp;marketplace=amazon&amp;region=DE&amp;placement=B00R1J7VA0&amp;asins=B00R1J7VA0&amp;linkId=af95a0ccdd463f53896a1e3499db7851&amp;show_border=true&amp;link_opens_in_new_window=true\" style=\"width:150px;height:250px\"><\/iframe><\/figure>\n\n\n<p style=\"text-align: right;\"><!--EndFragment--><em>Translated 19.10.2019 by JK<\/em><\/p>","protected":false},"excerpt":{"rendered":"<p>This article shows the wiring of cheaper &#8220;half bridge load cells&#8221; (YZC-161E). Such half bridge weight sensors are available on Ebay partly even together with a HX711 for only 9\u20ac. On Amazon they cost about 13\u20ac ? Quality At constant temperatures, these sensors work okay, but these cheap sensors show a so-called temperature drift. This means that the\u2026 <span class=\"read-more\"><a href=\"https:\/\/honey-pi.de\/en\/4x-half-bridge-waegezellen\/\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":98,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[14,16],"class_list":["post-1400","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-component","tag-load-cell","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\/1400","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=1400"}],"version-history":[{"count":16,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/posts\/1400\/revisions"}],"predecessor-version":[{"id":2462,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/posts\/1400\/revisions\/2462"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/media\/98"}],"wp:attachment":[{"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/media?parent=1400"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/categories?post=1400"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/honey-pi.de\/en\/wp-json\/wp\/v2\/tags?post=1400"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}