{"id":58,"date":"2023-02-11T18:31:16","date_gmt":"2023-02-11T18:31:16","guid":{"rendered":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/?p=58"},"modified":"2023-02-18T21:08:46","modified_gmt":"2023-02-18T21:08:46","slug":"nina-duans-status-report-for-2-11-2023","status":"publish","type":"post","link":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/2023\/02\/11\/nina-duans-status-report-for-2-11-2023\/","title":{"rendered":"Nina Duan\u2019s Status Report For 2\/11\/2023"},"content":{"rendered":"<h6><b>Personal Accomplishment<\/b><\/h6>\n<p><span style=\"font-weight: 400\">This week, I mainly focused on conducting research for our proposal use-case requirements and some components necessary to achieve them.<\/span><\/p>\n<p><span style=\"font-weight: 400\">To properly quantify our project\u2019s service expectations, I took a look into research about service times of existing fast food restaurants and found <a href=\"https:\/\/www.qsrmagazine.com\/content\/speed-service\">this 2016 research by QSR Magazine<\/a>\u00a0<\/span><span style=\"font-weight: 400\">particularly interesting. Although it is about drive-thru service specifically, the research data does suggest that customers expect an average service time of about 200 seconds. A <a href=\"https:\/\/medium.com\/swlh\/fast-food-is-slowing-down-by-44-seconds-115463968cdd\">news report from 2020<\/a><\/span><span style=\"font-weight: 400\">\u00a0claims that drive-thru has been slowing down in recent years, which means the expectation nowadays could potentially be even lower.<\/span><\/p>\n<p><span style=\"font-weight: 400\">To achieve our use-case requirements (see <a href=\"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/proposal\/\">proposal<\/a>), we need one or more directional microphones that can receive verbal inputs from a distance of 0.5m to 1.0m. They will be driven by a Raspberry Pi or an Arduino, which requires USB or I2S connectivity. Here\u2019s a list of some options I\u2019ve found so far:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400\"><a href=\"https:\/\/www.waveshare.com\/wiki\/WM8960_Audio_HAT\"><span style=\"font-weight: 400\">WM8960 I2S Microphone<\/span><\/a>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Raspberry Pi connectivity, compatible with Raspberry Pi Zero\/Zero W\/Zero<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">WH\/2B\/3B\/3B+<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Comes with demo and development guide in Python<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\"><a href=\"https:\/\/www.digikey.com\/en\/products\/detail\/adafruit-industries-llc\/3492\/8130887\"><span style=\"font-weight: 400\">MP34DT01 I2S Microphone<\/span><\/a>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">More compatible with Arduino, includes device-specific library<\/span><\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">CircuitPython module (in Python, C)<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Samson Go USB Mic<\/span>\n<ul>\n<li style=\"font-weight: 400\"><span style=\"font-weight: 400\">Compatible with with Raspberry Pi and laptops (Mac &amp; Windows)<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400\">In addition, I also took a look at available commercial databases. In our proposal, we chose to use noSQL cloud database, which leaves us with two prominent options:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400\"><b>AWS DynamoDB<\/b><span style=\"font-weight: 400\">: fast insertions and deletions, but less customizable and structured<\/span><\/li>\n<li style=\"font-weight: 400\"><b>Redis<\/b><span style=\"font-weight: 400\">: supports secondary database models like the document store, graph DBMS, and spatial DBMS<\/span><\/li>\n<\/ol>\n<h6><b>About Schedule<\/b><\/h6>\n<p><span style=\"font-weight: 400\">Since we have scheduled two weeks for preliminary research (i.e. to be completed by 2\/19\/2023, the due date for our design presentation), I am on track with our schedule.<\/span><\/p>\n<h6><b>Plans for Next Week<\/b><\/h6>\n<p><span style=\"font-weight: 400\">I hope to finalize our microphone, microcontroller, and database selection by next Wednesday, which will allow us to finish our design and start gathering chosen components. I will also be our group\u2019s presenter, so the rest of the week will be spent on polishing our presentation slides and preparing for Monday\u2019s presentation.<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Personal Accomplishment This week, I mainly focused on conducting research for our proposal use-case requirements and some components necessary to achieve them. To properly quantify our project\u2019s service expectations, I took a look into research about service times of existing fast food restaurants and found this 2016 research by QSR Magazine\u00a0particularly interesting. Although it is &hellip; <a href=\"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/2023\/02\/11\/nina-duans-status-report-for-2-11-2023\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Nina Duan\u2019s Status Report For 2\/11\/2023&#8221;<\/span><\/a><\/p>\n","protected":false},"author":687,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[7],"tags":[],"_links":{"self":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/posts\/58"}],"collection":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/users\/687"}],"replies":[{"embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/comments?post=58"}],"version-history":[{"count":1,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/posts\/58\/revisions"}],"predecessor-version":[{"id":59,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/posts\/58\/revisions\/59"}],"wp:attachment":[{"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/media?parent=58"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/categories?post=58"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/course.ece.cmu.edu\/~ece500\/projects\/s23-teamd3\/wp-json\/wp\/v2\/tags?post=58"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}