{"id":2339,"date":"2020-05-20T11:40:30","date_gmt":"2020-05-20T18:40:30","guid":{"rendered":"http:\/\/www.donluc.com\/?p=2339"},"modified":"2020-05-20T11:40:30","modified_gmt":"2020-05-20T18:40:30","slug":"project-14-components-sparkfun-alcohol-gas-sensor-mq-3-mk18","status":"publish","type":"post","link":"https:\/\/www.donluc.com\/?p=2339","title":{"rendered":"Project #14: Components &#8211; SparkFun Alcohol Gas Sensor &#8211; MQ-3 &#8211; Mk18"},"content":{"rendered":"<div style=\"width: 720px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-2339-1\" width=\"720\" height=\"406\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/dl2005mk09.mp4?_=1\" \/><a href=\"https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/dl2005mk09.mp4\">https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/dl2005mk09.mp4<\/a><\/video><\/div>\n<p>&#8212;&#8212;<\/p>\n<p>#DonLuc #Electronics #Components #MQ3 #Microcontrollers #Environment #SparkFun #Consultant #Vlog #Aphasia<\/p>\n<p>&#8212;&#8212;<\/p>\n<p><a href=\"https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/DL2005Mk09a.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/DL2005Mk09a.png\" alt=\"Components\" width=\"720\" height=\"480\" class=\"alignnone size-full wp-image-2341\" srcset=\"https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/DL2005Mk09a.png 720w, https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/DL2005Mk09a-300x200.png 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<p>&#8212;&#8212;<\/p>\n<p><a href=\"https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/DL2005Mk09b.png\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/DL2005Mk09b.png\" alt=\"Components\" width=\"720\" height=\"480\" class=\"alignnone size-full wp-image-2342\" srcset=\"https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/DL2005Mk09b.png 720w, https:\/\/www.donluc.com\/wp-content\/uploads\/2020\/05\/DL2005Mk09b-300x200.png 300w\" sizes=\"auto, (max-width: 720px) 100vw, 720px\" \/><\/a><\/p>\n<p>&#8212;&#8212;<\/p>\n<p><strong>SparkFun Alcohol Gas Sensor &#8211; MQ-3<\/strong><\/p>\n<p><strong>SparkFun Item:<\/strong> SEN-08880<\/p>\n<p>This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-5V ADC. This sensor has a high sensitivity and fast response time. The sensor&#8217;s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC. This semiconductor gas sensor detects the presence of alcohol gas at concentrations from 0.04 mg\/L to 4 mg\/L, a range suitable for making a breathalyser. The sensor\u2019s simple analog voltage interface requires only one analog input pin from your microcontroller.<\/p>\n<p>To calculate estimated peak blood alcohol concentration (EBAC), a variation, including drinking period in hours, of the Widmark formula was used. The formula is:<\/p>\n<p><strong>EBAC<\/strong> = ( 0.806 \u00d7 SD \u00d7 1.2 BW \u00d7 Wt \\ MR \u00d7 DP ) \u00d7 10<\/p>\n<p><strong>Where:<\/strong><\/p>\n<p>-0.806 is a constant for body water in the blood (mean 80.6%)<br \/>\n-SD is the number of standard drinks, that being 10 grams of ethanol each<br \/>\n-1.2 is a factor to convert the amount in grams<br \/>\n-BW is a body water constant (0.58 for males and 0.49 for females)<br \/>\n-Wt is body weight (kilogram)<br \/>\n-MR is the metabolism constant (0.015 for males and 0.017 for females)<br \/>\n-DP is the drinking period in hours<br \/>\n-10 converts the result to permillage of alcohol<\/p>\n<p><strong>BAC%<\/strong> = Breath mg\/L * 0.21<\/p>\n<p>1 x SparkFun Alcohol Gas Sensor &#8211; MQ-3<br \/>\n1 x Pololu Carrier for MQ Gas Sensors<br \/>\n3 x Break Away Headers &#8211; Straight<br \/>\n1 x 220k Ohm<\/p>\n<p><strong>Technology Experience<\/strong><\/p>\n<ul>\n<li>Research &#038; Development (R &#038; D)<\/li>\n<li>Desktop Applications (Windows, OSX, Linux, Multi-OS, Multi-Tier, etc&#8230;)<\/li>\n<li>Mobile Applications (Android, iOS, Blackberry, Windows Mobile, Windows CE, etc&#8230;)<\/li>\n<li>Web Applications (LAMP, Scripting, Java, ASP, ASP.NET, RoR, Wakanda, etc&#8230;)<\/li>\n<li>Social Media Programming &#038; Integration (Facebook, Twitter, YouTube, Pinterest, etc&#8230;)<\/li>\n<li>Content Management Systems (WordPress, Drupal, Joomla, Moodle, etc&#8230;)<\/li>\n<li>Bulletin Boards (phpBB, SMF, Vanilla, jobberBase, etc&#8230;)<\/li>\n<li>eCommerce (WooCommerce, OSCommerce, ZenCart, PayPal Shopping Cart, etc&#8230;)<\/li>\n<\/ul>\n<p><strong>Instructor<\/strong><\/p>\n<ul>\n<li>DOS, Windows, OSX, Linux, iOS, Android, Multi-OS<\/li>\n<li>Linux-Apache-PHP-MySQL<\/li>\n<li>Robotics<\/li>\n<li>Arduino<\/li>\n<li>Raspberry Pi<\/li>\n<li>Espressif<\/li>\n<\/ul>\n<p><strong>Follow Us<\/strong><\/p>\n<p><strong>The Alpha Geek<\/strong><\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"CaJYQoDPkY\"><p><a href=\"https:\/\/www.donluc.com\/?page_id=6\">Why &#8220;The Alpha Geek&#8221;?<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" title=\"&#8220;Why &#8220;The Alpha Geek&#8221;?&#8221; &#8212; Don Luc Electronics\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"https:\/\/www.donluc.com\/?page_id=6&#038;embed=true#?secret=CaJYQoDPkY\" data-secret=\"CaJYQoDPkY\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p><strong>Aphasia<\/strong><\/p>\n<blockquote class=\"wp-embedded-content\" data-secret=\"X4kfihz4Ws\"><p><a href=\"https:\/\/www.donluc.com\/?page_id=2149\">Don Luc Aphasia<\/a><\/p><\/blockquote>\n<p><iframe loading=\"lazy\" title=\"&#8220;Don Luc Aphasia&#8221; &#8212; Don Luc Electronics\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; clip: rect(1px, 1px, 1px, 1px);\" src=\"https:\/\/www.donluc.com\/?page_id=2149&#038;embed=true#?secret=X4kfihz4Ws\" data-secret=\"X4kfihz4Ws\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe><\/p>\n<p><strong>J. Luc Paquin \u2013 Curriculum Vitae<\/strong><br \/>\nhttps:\/\/www.donluc.com\/DLHackster\/LucPaquinCVEngMk2020a.pdf<\/p>\n<p><strong>Web:<\/strong> https:\/\/www.donluc.com\/<br \/>\n<strong>Web:<\/strong> http:\/\/www.jlpconsultants.com\/<br \/>\n<strong>Web:<\/strong> https:\/\/www.donluc.com\/DLHackster\/<br \/>\n<strong>Web:<\/strong> https:\/\/www.hackster.io\/neosteam-labs<br \/>\n<strong>Facebook:<\/strong> https:\/\/www.facebook.com\/neosteam.labs.9\/<br \/>\n<strong>YouTube:<\/strong> https:\/\/www.youtube.com\/channel\/UC5eRjrGn1CqkkGfZy0jxEdA<br \/>\n<strong>Twitter:<\/strong> https:\/\/twitter.com\/labs_steam<br \/>\n<strong>Pinterest:<\/strong> https:\/\/www.pinterest.com\/NeoSteamLabs\/<\/p>\n<p><strong>Don Luc<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>&#8212;&#8212; #DonLuc #Electronics #Components #MQ3 #Microcontrollers #Environment #SparkFun #Consultant #Vlog #Aphasia &#8212;&#8212; &#8212;&#8212; &#8212;&#8212; SparkFun Alcohol Gas Sensor &#8211; MQ-3 SparkFun Item: SEN-08880 This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output &#8230; <a title=\"Project #14: Components &#8211; SparkFun Alcohol Gas Sensor &#8211; MQ-3 &#8211; Mk18\" class=\"read-more\" href=\"https:\/\/www.donluc.com\/?p=2339\" aria-label=\"Read more about Project #14: Components &#8211; SparkFun Alcohol Gas Sensor &#8211; MQ-3 &#8211; Mk18\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101,38,46,10,43],"tags":[105,102,4,19,107,103,27,33,34,108],"class_list":["post-2339","post","type-post","status-publish","format-standard","hentry","category-components","category-digitalelectronics","category-pololu","category-projects","category-sparkfun","tag-aphasia","tag-components","tag-consultant","tag-electronics","tag-environment","tag-pololu","tag-projects-2","tag-technology","tag-video-blog","tag-vlog"],"_links":{"self":[{"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/posts\/2339","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.donluc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2339"}],"version-history":[{"count":1,"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/posts\/2339\/revisions"}],"predecessor-version":[{"id":2343,"href":"https:\/\/www.donluc.com\/index.php?rest_route=\/wp\/v2\/posts\/2339\/revisions\/2343"}],"wp:attachment":[{"href":"https:\/\/www.donluc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.donluc.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.donluc.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}