{"id":237823,"date":"2021-02-28T15:13:17","date_gmt":"2021-02-28T14:13:17","guid":{"rendered":"https:\/\/emariete.com\/?p=237823"},"modified":"2021-02-28T15:13:17","modified_gmt":"2021-02-28T14:13:17","slug":"peluco2-co2-meter-muneca-wearable","status":"publish","type":"post","link":"https:\/\/emariete.com\/en\/peluco2-medidor-co2-muneca-wearable\/","title":{"rendered":"PeluCO\u2082: A CO\u2082 meter on your wrist (wearable)"},"content":{"rendered":"<p class=\"wp-block-paragraph\">Do you always want to have <strong>at your fingertips CO\u2082 level<\/strong> present in the environment? This is the perfect solution. A <strong>CO<\/strong>\u2082<strong> \"full equipe\".<\/strong> (no strings attached) in<strong> a wearable<\/strong> <strong>that you can wear on your wrist<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Medidor-CO2-Wearable.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Medidor-CO2-Wearable-1024x768.jpg\" alt=\"\" class=\"wp-image-237868\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Medidor-CO2-Wearable-1024x768.jpg 1024w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Medidor-CO2-Wearable-300x225.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Medidor-CO2-Wearable-768x576.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Medidor-CO2-Wearable.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>This is a very special post, as it is the first post published in collaboration with a user of the eMariete blog, the user Ernesto (<a href=\"https:\/\/twitter.com\/erguro1973\" target=\"_blank\" rel=\"noreferrer noopener nofollow\">@erguro1973<\/a>).<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">It is a project, <strong>designed and built by @erguro1973<\/strong>on the basis of the <a href=\"https:\/\/emariete.com\/en\/carbon-gas-co2-meter\/\">eMariete CO2 meter<\/a>made with <strong>a lot of ingenuity and hard work<\/strong>. Not surprisingly, it has had to go through a number of tests and iterations of the box to achieve the current result.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-12.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"1280\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-12-edited.jpg\" alt=\"\" class=\"wp-image-237866\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-12-edited.jpg 720w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-12-edited-169x300.jpg 169w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-12-edited-576x1024.jpg 576w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>But let @erguro1973 himself explain his motivations:<\/strong><\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><em><strong>\"The PeluCO\u2082 project was born out of the need to know the air quality inside premises and on public transport, as many of you may already know, several studies on the spread of the SARS CoV-2 virus point to aerosols as a route of contagion, and airborne contagion increases its chances in poorly ventilated premises\".<\/strong><\/em><\/p>\n\n\n\n<p class=\"has-medium-font-size wp-block-paragraph\"><em><strong>\"PeluCO\u2082 is your portable meter that will allow you to independently measure the CO\u2082 levels in the places you visit and will alert you with a 3-state LED and a display that will show you the value in Parts Per Million of the CO\u2082 concentration.<\/strong><\/em><br><em><strong>NDIR technology and sensors known and used in commercial meters have been used for its realisation\".<\/strong><\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-galer-a-de-fotos-del-peluco\">PeluCO\u2082 photo gallery<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Here are some pictures of PeluCO\u2082 to whet your appetite. You can click on each one of them to see them bigger.<\/p>\n\n\n\n<figure class=\"wp-block-gallery columns-3 is-cropped wp-block-gallery-2 is-layout-flex wp-block-gallery-is-layout-flex\"><ul class=\"blocks-gallery-grid\"><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"954\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-1-1024x954.jpg\" alt=\"\" data-id=\"237835\" data-full-url=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-1.jpg\" data-link=\"https:\/\/emariete.com\/?attachment_id=237835#main\" class=\"wp-image-237835\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-1-1024x954.jpg 1024w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-1-300x279.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-1-768x715.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-1.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-3.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-3-1024x768.jpg\" alt=\"\" data-id=\"237836\" data-full-url=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-3.jpg\" data-link=\"https:\/\/emariete.com\/?attachment_id=237836#main\" class=\"wp-image-237836\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-3-1024x768.jpg 1024w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-3-300x225.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-3-768x576.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-3.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-4.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-4-768x1024.jpg\" alt=\"\" data-id=\"237837\" data-full-url=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-4.jpg\" data-link=\"https:\/\/emariete.com\/?attachment_id=237837#main\" class=\"wp-image-237837\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-4-768x1024.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-4-225x300.jpg 225w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-4.jpg 960w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-6.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-6-768x1024.jpg\" alt=\"\" data-id=\"237838\" data-full-url=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-6.jpg\" data-link=\"https:\/\/emariete.com\/?attachment_id=237838#main\" class=\"wp-image-237838\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-6-768x1024.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-6-225x300.jpg 225w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-6.jpg 960w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-7.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-7-768x1024.jpg\" alt=\"\" data-id=\"237839\" data-full-url=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-7.jpg\" data-link=\"https:\/\/emariete.com\/?attachment_id=237839#main\" class=\"wp-image-237839\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-7-768x1024.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-7-225x300.jpg 225w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-7.jpg 960w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-8.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-8-768x1024.jpg\" alt=\"\" data-id=\"237840\" data-full-url=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-8.jpg\" data-link=\"https:\/\/emariete.com\/?attachment_id=237840#main\" class=\"wp-image-237840\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-8-768x1024.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-8-225x300.jpg 225w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-8.jpg 960w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-11.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-11-768x1024.jpg\" alt=\"\" data-id=\"237841\" data-full-url=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-11.jpg\" data-link=\"https:\/\/emariete.com\/?attachment_id=237841#main\" class=\"wp-image-237841\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-11-768x1024.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-11-225x300.jpg 225w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-11.jpg 960w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure><\/li><li class=\"blocks-gallery-item\"><figure><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-20.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"768\" height=\"1024\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-20-768x1024.jpg\" alt=\"\" data-id=\"237842\" data-full-url=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-20.jpg\" data-link=\"https:\/\/emariete.com\/?attachment_id=237842#main\" class=\"wp-image-237842\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-20-768x1024.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-20-225x300.jpg 225w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-20.jpg 960w\" sizes=\"auto, (max-width: 768px) 100vw, 768px\" \/><\/a><\/figure><\/li><\/ul><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-construcci-n-del-peluco\">PeluCO\u2082 construction<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The construction of the PeluCO\u2082 is not particularly difficult, other than working with several elements in a small space and printing their 3D printed parts correctly.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We can divide its construction into <strong>four parts<\/strong>:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Firmware<\/li><li>Connections<\/li><li>3D printed box assembly<\/li><li>Optimisations<\/li><\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">You have all the<strong> step-by-step instructions<\/strong>with all kinds of details and even detailed video, <strong>in the post of the <a href=\"https:\/\/emariete.com\/en\/carbon-gas-co2-meter\/\">eMariete's homemade CO2 meter<\/a><\/strong>. In this post we will tell you about it in duo, between Ernesto and Mariete, <strong>the differences so you can build your own PeluCO<em><strong>\u2082<\/strong><\/em> easily<\/strong>. starting from the main tutorial.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">If you haven't read it, we recommend that you do so before building PeluCO\u2082.<\/p>\n\n\n\n<figure class=\"wp-block-embed-wordpress aligncenter wp-block-embed is-type-wp-embed is-provider-emariete\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"fOl7AmF9IS\"><a href=\"https:\/\/emariete.com\/en\/carbon-gas-co2-meter\/\">A home CO2 meter with Wifi against the coronavirus: The CO2 Easy<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" title=\"&quot;A home CO2 meter with Wifi against the coronavirus: The CO2 Easy&quot; - eMariete\" src=\"https:\/\/emariete.com\/medidor-casero-co2\/embed\/#?secret=foA42T3YMu#?secret=fOl7AmF9IS\" data-secret=\"fOl7AmF9IS\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-componentes-necesarios\">Required components<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">For the construction of the PeluCO\u2082, you will need the following materials:<\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>CO\u2082 sensor MH-Z19B (pin version, connector version does not fit)<\/li><li>Wemos D1 Mini<\/li><li>Wemos Battery Shield<\/li><li>OLED display SSD1306<\/li><li>Li-Ion battery 3.7V 500mAh<\/li><li>PLA or PETG filament for the case and TPU for the strap<\/li><\/ol>\n\n\n\n<div class=\"wp-block-group has-pale-cyan-blue-background-color has-background\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p class=\"wp-block-paragraph\">Nearly all MH-Z19B sensors now on sale <strong>are false<\/strong> and malfunctioning. <strong>It is best to buy it from the official shop of the sensor manufacturer (Winsen).<\/strong>This way you can be sure to receive the original sensor.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The problem is that the manufacturer does not sell the MH-Z19Bs one at a time, but has to be <strong>two by two<\/strong>. So, if you want to build two, or have someone who wants another one, this may be a good option:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>MH-Z19B<\/strong><\/td><td><img loading=\"lazy\" decoding=\"async\" width=\"350\" height=\"350\" class=\"wp-image-237226\" style=\"width: 350px;\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/01\/MH-Z19B-Winsen.jpg\" alt=\"\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/01\/MH-Z19B-Winsen.jpg 350w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/01\/MH-Z19B-Winsen-300x300.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/01\/MH-Z19B-Winsen-150x150.jpg 150w\" sizes=\"auto, (max-width: 350px) 100vw, 350px\" \/><\/td><td><strong><a rel=\"noreferrer noopener nofollow\" href=\"https:\/\/s.click.aliexpress.com\/e\/_AciwHn\" target=\"_blank\">2 CO\u2082 sensors MH-Z19B<\/a><\/strong>&nbsp;for about 38 Euros in the official manufacturer's shop on AliExpress. <br><br>Here you will have the <strong>assurance of receiving the original sensor, and not a copy.<\/strong>.<br><br>I recommend that you order the one with a range of <strong>5000 ppm<\/strong>.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Be careful not to buy the MH-Z19 sensor.<strong>C<\/strong> (many sellers advertise the MH-Z19<strong>B<\/strong> and they actually send the MH-Z19<strong>C<\/strong>), you may have problems with this project.<\/p>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-instalaci-n-del-firmware\">Firmware installation<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You have the detailed instructions for the firmware recording as well as for the firmware configuration, <a href=\"https:\/\/emariete.com\/en\/carbon-gas-co2-meter\/\">in the main tutorial<\/a>. Just follow them.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-conexiones\">Connections<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">You can make the connections by following the diagram below:<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-de-conexiones.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"954\" height=\"710\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-de-conexiones.jpg\" alt=\"\" class=\"wp-image-237828\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-de-conexiones.jpg 954w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-de-conexiones-300x223.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-de-conexiones-768x572.jpg 768w\" sizes=\"auto, (max-width: 954px) 100vw, 954px\" \/><\/a><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Don't be intimidated by the mess of cables, you'll see that it's not difficult.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">We will use the <strong>divide and rule strategy<\/strong> to make the connections. Go to <strong>every step, as if there were no more components<\/strong> of those we indicate in each step, and you will see how easy it is.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The order is not important, <strong>familiarise yourself with the whole set-up<\/strong> looking at the diagrams and photographs and <strong>set it up as you are most comfortable<\/strong>.<\/p>\n\n\n\n<p class=\"has-pale-cyan-blue-background-color has-background has-medium-font-size wp-block-paragraph\"><strong>We are finishing writing the tutorial, as you read this. Soon you will find more detailed descriptions of the assembly steps, pictures of each step, the files to 3D print the parts and everything else.<\/strong><\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-conecta-el-sensor-mh-z19b-a-la-placa-wemos-d1-mini\">Connects the MH-Z19B sensor to the Wemos D1 Mini board<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You will simply need to use four wires.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Take advantage of this moment to <strong>remove <\/strong>on <strong>micro USB connector<\/strong> and the <strong>micro switch<\/strong> of the Wemos D1 Mini to reduce space requirements.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-MH-Z19B.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"600\" height=\"585\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-MH-Z19B.jpg\" alt=\"\" class=\"wp-image-237829\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-MH-Z19B.jpg 600w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-MH-Z19B-300x293.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-conecta-el-led-ws2812b\">Connect the WS2812B LED<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">You can connect the 5 volts and GND. <strong>both to the SSD1306 display and to the Wemos battery shield<\/strong>. As you find most comfortable.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-WS2812B.png\"><img loading=\"lazy\" decoding=\"async\" width=\"671\" height=\"615\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-WS2812B.png\" alt=\"\" class=\"wp-image-237830\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-WS2812B.png 671w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-WS2812B-300x275.png 300w\" sizes=\"auto, (max-width: 671px) 100vw, 671px\" \/><\/a><\/figure><\/div>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>The LED will be mounted \"loose\".<\/strong> without any kind of plate or support, otherwise it would trip over the screen. Put a piece of <strong>insulating tape or similar<\/strong> to ensure that their connections <strong>do not touch<\/strong> nowhere.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">You will have to <strong>glue it to the box <\/strong>with the glue of your choice, e.g. cyanoacrylate (superglue).<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"540\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-edited.jpg\" alt=\"\" class=\"wp-image-237851\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-edited.jpg 960w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-edited-300x169.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-edited-768x432.jpg 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/a><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-2.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"540\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-2-edited.jpg\" alt=\"\" class=\"wp-image-237853\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-2-edited.jpg 960w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-2-edited-300x169.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-2-edited-768x432.jpg 768w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\" \/><\/a><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-conecta-la-placa-battey-shield-al-wemos-d1-mini\">Connect the \"Battey Shield\" board to the Wemos D1 Mini<\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-21.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"898\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-21-1024x898.jpg\" alt=\"\" class=\"wp-image-237831\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-21-1024x898.jpg 1024w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-21-300x263.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-21-768x673.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-21.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-conecta-la-pantalla-ssd1306-al-wemos-d1-mini\">Connects the SSD1306 display to the Wemos D1 Mini<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Note that <strong>the SDA and SLC pins are used for connection to the sandwich<\/strong> of the batteyt shield and the Wemos D1 Mini directly (they match). Positive and negative are connected to the sandwich with two wires.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-22.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"813\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-22-1024x813.jpg\" alt=\"\" class=\"wp-image-237833\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-22-1024x813.jpg 1024w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-22-300x238.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-22-768x610.jpg 768w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-22.jpg 1280w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure><\/div>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-conecta-la-bater-a-al-battery-shield\">Connect the battery to the Battery Shield<\/h3>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-Battery-Shield-y-Lipo.png\"><img loading=\"lazy\" decoding=\"async\" width=\"371\" height=\"553\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-Battery-Shield-y-Lipo.png\" alt=\"\" class=\"wp-image-237832\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-Battery-Shield-y-Lipo.png 371w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Diagrama-Battery-Shield-y-Lipo-201x300.png 201w\" sizes=\"auto, (max-width: 371px) 100vw, 371px\" \/><\/a><\/figure><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-montaje-en-caja-impresa-en-3d-y-su-impresi-n\">3D printed box assembly and printing<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Below are some photographs of the assembly process that will serve as a guide for you. <strong>reference and source of inspiration<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>@erguro1973<\/strong> is finishing some <strong>latest amendments<\/strong> in the design of the printed parts. Soon you will find here the STL files so that you can download the parts and print them. <strong>print them yourself<\/strong>.<\/p>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"720\" height=\"1280\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-edited.jpg\" alt=\"\" class=\"wp-image-237860\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-edited.jpg 720w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-edited-169x300.jpg 169w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-edited-576x1024.jpg 576w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-MH-Z19B-y-WS2812B.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"721\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-MH-Z19B-y-WS2812B-edited.jpg\" alt=\"\" class=\"wp-image-237859\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-MH-Z19B-y-WS2812B-edited.jpg 1280w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-MH-Z19B-y-WS2812B-edited-300x169.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-MH-Z19B-y-WS2812B-edited-1024x577.jpg 1024w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-MH-Z19B-y-WS2812B-edited-768x433.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/a><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-1.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-1-edited.jpg\" alt=\"\" class=\"wp-image-237862\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-1-edited.jpg 1280w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-1-edited-300x169.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-1-edited-1024x576.jpg 1024w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-WS2812B-3-1-edited-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/a><\/figure><\/div>\n\n\n\n<div class=\"wp-block-image\"><figure class=\"aligncenter size-large\"><a href=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Sin-Bateria.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1280\" height=\"720\" src=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Sin-Bateria-edited.jpg\" alt=\"\" class=\"wp-image-237864\" srcset=\"https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Sin-Bateria-edited.jpg 1280w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Sin-Bateria-edited-300x169.jpg 300w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Sin-Bateria-edited-1024x576.jpg 1024w, https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Sin-Bateria-edited-768x432.jpg 768w\" sizes=\"auto, (max-width: 1280px) 100vw, 1280px\" \/><\/a><\/figure><\/div>","protected":false},"excerpt":{"rendered":"<p>Want to keep your CO2 always in sight, dress it up!<\/p>","protected":false},"author":1,"featured_media":237847,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","_lmt_disableupdate":"yes","_lmt_disable":"no","footnotes":""},"categories":[16,17],"tags":[26,28,41,50],"class_list":["post-237823","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-medidor-co2","category-proyectos-arduino","tag-espeasy","tag-esp8266","tag-nodemcu","tag-sensores"],"modified_by":"Mariete","uagb_featured_image_src":{"full":["https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Wareable-El-CO2-en-tu-muneca.png",1680,945,false],"thumbnail":["https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Wareable-El-CO2-en-tu-muneca-150x150.png",150,150,true],"medium":["https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Wareable-El-CO2-en-tu-muneca-300x169.png",300,169,true],"medium_large":["https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Wareable-El-CO2-en-tu-muneca-768x432.png",768,432,true],"large":["https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Wareable-El-CO2-en-tu-muneca-1024x576.png",1024,576,true],"1536x1536":["https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Wareable-El-CO2-en-tu-muneca-1536x864.png",1536,864,true],"2048x2048":["https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Wareable-El-CO2-en-tu-muneca.png",1680,945,false],"trp-custom-language-flag":["https:\/\/emariete.com\/wp-content\/uploads\/2021\/02\/PeluCO2-Wareable-El-CO2-en-tu-muneca.png",18,10,false]},"uagb_author_info":{"display_name":"Mariete","author_link":"https:\/\/emariete.com\/en\/author\/admin_xlyz052h\/"},"uagb_comment_info":3,"uagb_excerpt":"\u00bfQuieres tener el CO2 siempre a la vista? \u00a1V\u00edstetelo!","_links":{"self":[{"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/posts\/237823","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/comments?post=237823"}],"version-history":[{"count":0,"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/posts\/237823\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/media\/237847"}],"wp:attachment":[{"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/media?parent=237823"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/categories?post=237823"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/emariete.com\/en\/wp-json\/wp\/v2\/tags?post=237823"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}