{"id":10522,"date":"2020-04-13T07:16:50","date_gmt":"2020-04-13T05:16:50","guid":{"rendered":"https:\/\/www.blogyourearth.com\/?p=10522"},"modified":"2022-10-25T19:22:29","modified_gmt":"2022-10-25T17:22:29","slug":"first-test-setup-diy-workaround-bridge-ventilator-project-vs-coronavirus","status":"publish","type":"post","link":"https:\/\/www.blogyourearth.com\/en\/top-story-en\/first-test-setup-diy-workaround-bridge-ventilator-project-vs-coronavirus\/10522","title":{"rendered":"First test setup \u2013 DIY workaround bridge ventilator project vs coronavirus"},"content":{"rendered":"<p>The last few days I had little time and waited for wooden boards and an AMBU Bag that I had ordered online. Unfortunately I did not receive the delivery for 14 days. Because of the exit restrictions and the closed shops it is not so easy to get material. In addition, the German shops do not control the online trade. So there are problems with the integration of the payment via e.g. PayPal in the web-shop if you don&#8217;t order at Amazon, but surely also a complete overload of the still active merchants in the net.<\/p>\n<p>Anyway, I was able to build my test setup from still existing material even though it didn&#8217;t turn out very nice. But the basic principle works and I can concentrate more on the electronics and sensor technology which I enjoy more anyway.<\/p>\n<p>The following picture shows my current setup.<\/p>\n<div id=\"attachment_10510\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_test_setup-300x225.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-10510\" class=\"size-medium wp-image-10510\" src=\"https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_test_setup-300x225.jpg\" alt=\"DIY ventilator construction wiper motor test setup\" width=\"300\" height=\"225\" srcset=\"https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_test_setup-300x225.jpg 300w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_test_setup-1024x768.jpg 1024w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_test_setup-768x576.jpg 768w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_test_setup-1080x810.jpg 1080w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_test_setup.jpg 1200w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-10510\" class=\"wp-caption-text\">DIY ventilator construction wiper motor test setup<\/p><\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.blogyourearth.com\/en\/top-story-en\/first-test-setup-diy-workaround-bridge-ventilator-project-vs-coronavirus\/10522\/#Explanation_of_the_electronics\" >Explanation of the electronics<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.blogyourearth.com\/en\/top-story-en\/first-test-setup-diy-workaround-bridge-ventilator-project-vs-coronavirus\/10522\/#Video\" >Video<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.blogyourearth.com\/en\/top-story-en\/first-test-setup-diy-workaround-bridge-ventilator-project-vs-coronavirus\/10522\/#Summary\" >Summary<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Explanation_of_the_electronics\"><\/span>Explanation of the electronics<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Since I have already received questions about what exactly I installed on the ventilator on Elektornik, here is a short explanation.Step Down<\/p>\n<ul>\n<li><strong>Step Down-Converter:<\/strong> With the Step Down Converter a 5V voltage with 3A is generated from the 12V input voltage of the car battery. The Step Down-Converter has two USB outputs. The ESP8266 NodeMCU is connected to one of them and a smartphone, for example, can be charged at the second USB output.<\/li>\n<li><strong>ESP8266 NodeMCU:<\/strong> The board is used to implement the control of the ventilator. The ESP8266 NodeMCU can be easily programmed with the widely used Arduino IDE. There are also many manuals available on the net. For example, additional sensors can be connected to its I2C bus.<\/li>\n<li>Voltmeter with display: The voltmeter I have installed to see if the applied voltage is still 12V.<\/li>\n<li><strong>DIY I2C Hub:<\/strong> The self-built I2C Hub allows me to connect several devices to the ESP8266 NodeMCU. The hub itself is very simple. An explanation of how to build such a hub can be found on my blog here (<a title=\"Build your own I\u00b2C Hub\" href=\"https:\/\/custom-build-robots.com\/electronic\/build-your-own-i%c2%b2c-hub\/12102?lang=en\">Build your own I\u00b2C Hub<\/a>).<\/li>\n<li><strong>12V Motor Switch:<\/strong> With this switch you can cut off the 12V voltage that is applied to the engine. So I can program and test in peace without the wiper motor turning.<\/li>\n<li><strong>PCA9685 Servo Controller:<\/strong> With the servo controller, the PWM signal is generated once to control the speed of the motor and a HIGH \/ LOW signal to set the direction of rotation of the motor.<\/li>\n<li><strong>Motor Driver:<\/strong> The motor driver is controlled by the servo controller and supplies the motor with a 12V voltage and the necessary current to allow the wiper motor to rotate powerfully.<\/li>\n<li><strong>OLED Display:<\/strong> The OLED display shows information such as the current PWM signal and the direction of rotation. But of course interesting information can be displayed during the course of the project.<\/li>\n<\/ul>\n<div id=\"attachment_10516\" style=\"width: 310px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_details-300x239.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-10516\" class=\"size-medium wp-image-10516\" src=\"https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_details-300x239.jpg\" alt=\"DIY ventilator construction wiper motor details\" width=\"300\" height=\"239\" srcset=\"https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_details-300x239.jpg 300w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_details-1024x816.jpg 1024w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_details-768x612.jpg 768w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_details-1080x860.jpg 1080w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/DIY_ventilator_construction_wiper_motor_details.jpg 1412w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-10516\" class=\"wp-caption-text\">DIY ventilator construction wiper motor details<\/p><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Video\"><\/span>Video<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The video shows my current structure and how it works. Because I don&#8217;t have an AMBU Bag yet, I added a small spring, which brings the rocker back when the motor has pressed it down. I will probably attach a Leva Cam to the motor to be able to reproduce the pressure curves mechanically. Here I used the documents of the project <a title=\"https:\/\/github.com\/ProtofyTeam\" href=\"https:\/\/github.com\/ProtofyTeam\" target=\"_blank\" rel=\"noopener noreferrer\">https:\/\/github.com\/ProtofyTeam<\/a> bedient.<\/p>\n<p><a href=\"https:\/\/youtu.be\/UMFpfnczXas\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-12641 size-full\" src=\"https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt.png\" alt=\"\" width=\"825\" height=\"464\" srcset=\"https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt.png 825w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-300x169.png 300w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-768x432.png 768w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-30x17.png 30w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-75x42.png 75w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-110x62.png 110w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-160x90.png 160w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-500x281.png 500w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-50x28.png 50w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-100x56.png 100w, https:\/\/www.blogyourearth.com\/wp-content\/uploads\/2020\/04\/Eingefuegt-200x112.png 200w\" sizes=\"(max-width: 825px) 100vw, 825px\" \/><\/a><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Summary\"><\/span>Summary<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>When I finally receive the ordered AMBU Bag I can continue to take care of the sensor technology. Now I will install them as far as I think it is necessary and write the hull programs for them. I enjoy the project a lot and I learn a lot about the breathing of a person that I never knew before.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>The last few days I had little time and waited for wooden boards and an AMBU Bag that I had ordered online. Unfortunately I did not receive the delivery for 14 days. Because of the exit restrictions and the closed shops it is not so easy to get material. In addition, the German shops do [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":10512,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[2106,1610],"tags":[2114,2111,2107,2112,2117,2110,2113,2109,2108,2115,2116],"class_list":["post-10522","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-fight-covid19","category-top-story-en","tag-coronavirus","tag-covid19","tag-innovation","tag-medical-supplies","tag-motor","tag-open-source","tag-respirator","tag-shortage","tag-ventilator","tag-windshield","tag-wiper","et-has-post-format-content","et_post_format-et-post-format-standard"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>First test setup \u2013 DIY workaround bridge ventilator project vs coronavirus - BlogYourEarth<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.blogyourearth.com\/en\/top-story-en\/first-test-setup-diy-workaround-bridge-ventilator-project-vs-coronavirus\/10522\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"First test setup \u2013 DIY workaround bridge ventilator project vs coronavirus - BlogYourEarth\" \/>\n<meta property=\"og:description\" content=\"The last few days I had little time and waited for wooden boards and an AMBU Bag that I had ordered online. 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Unfortunately I did not receive the delivery for 14 days. Because of the exit restrictions and the closed shops it is not so easy to get material. 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