{"id":2962,"date":"2014-10-02T15:41:57","date_gmt":"2014-10-02T22:41:57","guid":{"rendered":"https:\/\/blog.digilentinc.com\/?p=2962"},"modified":"2021-06-17T08:42:49","modified_gmt":"2021-06-17T15:42:49","slug":"temperature-sensing-coffee-coaster","status":"publish","type":"post","link":"https:\/\/digilent.com\/blog\/temperature-sensing-coffee-coaster\/","title":{"rendered":"Temperature-Sensing Coffee Coaster"},"content":{"rendered":"<p>Coffee is taken very seriously here at Digilent, as it is in most workplaces. Something that used to make me mad was not knowing when my coffee hit that perfect\u00a0&#8220;Goldilocks&#8221; temperature zone where it didn\u2019t burn my mouth but was warm enough to fully enjoy. I am currently working on developing a thermocouple Pmod using Analog Devices MAX31855 and thought of a great application project.\u00a0 \u00a0If I could somehow sense how hot the temperature of the coffee was, I could have a microcontroller tell me when my coffee hit the perfect temperature\u00a0range!<\/p>\n<p>&nbsp;<\/p>\n<p>This birthed the thermocouple coffee coaster, a 3D-printed coaster with a slot for the thermocouple to run through and touch the bottom of a mug. Using my circuit paired with a chipKIT Pro MX7, I was able to create a state machine informing me of the relative temperature of my coffee. For display purposes, I grabbed an old OLED2 module and drew some fun pictures.<\/p>\n<figure id=\"attachment_2966\" aria-describedby=\"caption-attachment-2966\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122914.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2966\" src=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122914.jpg\" alt=\"20140812_122914\" width=\"600\" height=\"338\" srcset=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122914.jpg 4128w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122914-600x337.jpg 600w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122914-1024x576.jpg 1024w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122914-225x126.jpg 225w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-2966\" class=\"wp-caption-text\">Here is the coaster itself.<\/figcaption><\/figure>\n<figure id=\"attachment_2967\" aria-describedby=\"caption-attachment-2967\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122927.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2967\" src=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122927.jpg\" alt=\"20140812_122927\" width=\"600\" height=\"338\" srcset=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122927.jpg 4128w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122927-600x337.jpg 600w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122927-1024x576.jpg 1024w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122927-225x126.jpg 225w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-2967\" class=\"wp-caption-text\">It&#8217;s designed by another engineering intern, Marshall.<\/figcaption><\/figure>\n<figure id=\"attachment_2968\" aria-describedby=\"caption-attachment-2968\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122943.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2968\" src=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122943.jpg\" alt=\"20140812_122943\" width=\"600\" height=\"338\" srcset=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122943.jpg 4128w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122943-600x337.jpg 600w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122943-1024x576.jpg 1024w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122943-225x126.jpg 225w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-2968\" class=\"wp-caption-text\">The coaster allows for the thermocouple wire to run right up under the mug.<\/figcaption><\/figure>\n<figure id=\"attachment_2969\" aria-describedby=\"caption-attachment-2969\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122959.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2969\" src=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122959.jpg\" alt=\"20140812_122959\" width=\"600\" height=\"338\" srcset=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122959.jpg 4128w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122959-600x338.jpg 600w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122959-1024x576.jpg 1024w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122959-225x126.jpg 225w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122959-800x450.jpg 800w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-2969\" class=\"wp-caption-text\">The breadboard circuit with which the chipKIT interfaces.<\/figcaption><\/figure>\n<figure id=\"attachment_2965\" aria-describedby=\"caption-attachment-2965\" style=\"width: 600px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122840.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-2965\" src=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122840.jpg\" alt=\"20140812_122840\" width=\"600\" height=\"338\" srcset=\"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122840.jpg 4128w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122840-600x338.jpg 600w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122840-1024x576.jpg 1024w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122840-225x126.jpg 225w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122840-800x450.jpg 800w, https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122840-1200x675-cropped.jpg 1200w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/a><figcaption id=\"caption-attachment-2965\" class=\"wp-caption-text\">The final setup!<\/figcaption><\/figure>\n<p>&nbsp;<\/p>\n<p>Now whenever my coffee is thermodynamically ripe, I&#8217;m notified and can enjoy my coffee and keep working efficiently. I have also posted a link to a video where you can see this thing in action with a song by the famous band \u201cThe PIC-Me-Ups\u201d How nice of them to create a song just for this project!<\/p>\n<div class=\"jetpack-video-wrapper\"><iframe loading=\"lazy\" width=\"735\" height=\"413\" src=\"https:\/\/www.youtube.com\/embed\/wiX-KgPMiZY?feature=oembed\" frameborder=\"0\" allow=\"autoplay; encrypted-media\" allowfullscreen><\/iframe><\/div>\n<div class='watch-action'><div class='watch-position align-left'><div class='action-like'><a class='lbg-style6 like-2962 jlk' data-task='like' data-post_id='2962' data-nonce='d8c4d58d14' rel='nofollow'><img src='https:\/\/digilent.com\/blog\/wp-content\/plugins\/wti-like-post-pro\/images\/pixel.gif' title='Like' \/><span class='lc-2962 lc'>0<\/span><\/a><\/div><div class='action-unlike'><a class='unlbg-style6 unlike-2962 jlk' data-task='unlike' data-post_id='2962' data-nonce='d8c4d58d14' rel='nofollow'><img src='https:\/\/digilent.com\/blog\/wp-content\/plugins\/wti-like-post-pro\/images\/pixel.gif' title='Unlike' \/><span class='unlc-2962 unlc'>0<\/span><\/a><\/div><\/div> <div class='status-2962 status align-left'>Be the 1st to vote.<\/div><\/div><div class='wti-clear'><\/div>","protected":false},"excerpt":{"rendered":"<p>Coffee is taken very seriously here at Digilent, as it is in most workplaces. Something that used to make me mad was not knowing when my coffee hit that perfect &#8220;Goldilocks&#8221; temperature zone where it didn\u2019t burn my mouth but was warm enough to fully enjoy. I am currently working on developing a thermocouple Pmod using Analog Devices MAX31855 and thought of a great application project.   If I could somehow sense how hot the temperature of the coffee was, I could have a microcontroller tell me when my coffee hit the perfect temperature range!<\/p>\n","protected":false},"author":27,"featured_media":2965,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[4327],"tags":[],"ppma_author":[4476],"class_list":["post-2962","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-projects"],"jetpack_featured_media_url":"https:\/\/digilent.com\/blog\/wp-content\/uploads\/2014\/10\/20140812_122840.jpg","jetpack_sharing_enabled":true,"authors":[{"term_id":4476,"user_id":27,"is_guest":0,"slug":"samlowe","display_name":"Sam Lowe","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/fc16c9d1a9b5dc13d9625152878fe4c9e005956c5a46b09ef975349bc3adcc54?s=96&d=mm&r=g","1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":"","9":"","10":""}],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/posts\/2962","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/users\/27"}],"replies":[{"embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/comments?post=2962"}],"version-history":[{"count":0,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/posts\/2962\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/media\/2965"}],"wp:attachment":[{"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/media?parent=2962"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/categories?post=2962"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/tags?post=2962"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/digilent.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=2962"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}