{"id":4163,"date":"2020-09-28T10:45:13","date_gmt":"2020-09-28T09:45:13","guid":{"rendered":"http:\/\/dronesonen.usn.no\/?p=4163"},"modified":"2020-12-09T23:44:29","modified_gmt":"2020-12-09T22:44:29","slug":"week-39-2","status":"publish","type":"post","link":"https:\/\/dronesonen.usn.no\/?p=4163","title":{"rendered":"Week 39"},"content":{"rendered":"\n<p><strong>List of content:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>#1 Summary of the week (David)   <\/li><li>#2 Meeting summary (David) <\/li><li>#3 Sensor Pugh-matrix (David) <\/li><li>#4 Component list (Group)   <\/li><li>#5 A-, B- and C- Requirements in Norwegian (Group)<\/li><li>#6 Ejection chamber solidworks (Daniel)<\/li><li>#7 Lidar sensor compatibility, how to wire and operate on arduino (Jafar)              <\/li><\/ul>\n\n\n\n<p style=\"text-align:center\" class=\"has-text-color has-background has-medium-font-size has-dark-gray-color has-white-background-color\"><strong>#1 Summary of the week:<\/strong><\/p>\n\n\n\n<p>After a somewhat slow start to the project\nwith two of our initial members leaving, we\u2019ve gained some semblance of control\nand started to act according to a plan.<\/p>\n\n\n\n<p>We\u2019ve drawn inspiration from the scrum\nmodel, it goes like this; Every Monday and Thursday we have a short meeting\ntimed to 20 minutes. We decide upon some tasks for each member to complete. We\nask three questions, what did you do? What will you do? And finally; is\nanything in your way? The 20 minutes keeps the meetings disciplined, short and\nfocused. Every 3 weeks, we meet up for a longer meeting to address things that\ntake extensive discussion, this meeting will last between 1- and 1 hour 30\nminutes.<\/p>\n\n\n\n<p>Currently Daniel is working on modelling\nthe cannon itself in solidworks, due to feedback from Richard he has decided to\nscale down a bit and Is currently working on reducing the size of the ejection\nchamber, and other components of the cannon. Daniel is also looking at different\nmotor options to load the spring, which accelerates the firing plate. <\/p>\n\n\n\n<p>The Arduino Nano Sense BLE has been ordered\nand is on its way. One of the features which me (David) and Jafar are going to\nplay around with is the gyroscope function. Figuring out the x-, y- and z-orientation\nof the cannon is going to be crucial to make software direct the cannon. <\/p>\n\n\n\n<p>As of now we\u2019ve started to look up how to configure\na lidar sensor with the Arduino, to determine the distance to the target. More on\nwhy we arrived on a lidar sensor down below in the Pugh-matrix. Jafar has also\nbeen playing around with the servo motor from our old Arduino kit, concluding\nthat we probably need a better servo motor for some of the tasks. For now, the\nservo motor available might be sufficient for steering the lidar sensor along\nthe x-axis. <\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<p style=\"text-align:center\" class=\"has-medium-font-size\"><strong>#2 Meeting Summary 21.09<\/strong><\/p>\n\n\n\n<p>Inspired by the scrum model, <br> What did you do? <br> What will you do? <br> Is anything in your way? <\/p>\n\n\n\n<p><strong>Future Tasks:<\/strong> <br>Write about scrum work model for our group<br> Component list -Nano, J-link, Lidar <br> Fetch Lidar and J-link (Thursday) <br> Write HMS rules around the cannon <br> What type of motor is needed to push the launch plate? Find some options <\/p>\n\n\n\n<p class=\"has-normal-font-size\">Till\nThursday 21.09.:<\/p>\n\n\n\n<p><strong>David:<\/strong><br> -Add to component list  <br> -Make an order for the Nano BLE (Received)  &nbsp;&nbsp; &nbsp;<br> -Sensor Pugh-matrix to blog  <br> -Add A-,B-, and C-requirements to blog <\/p>\n\n\n\n<p><strong>Jafar:<\/strong><br> -Code for servo motor that rotates the Lidar <br> -Lidar to Arduino compatibility, how to wire and what libraries are needed (tutorials) &nbsp; <\/p>\n\n\n\n<p><strong>Daniel:<\/strong><br> -Model ejection port and firing plate for the cannon (done) <br> -Make an order for the springs required for the firing plate <br>  -Model the framework around the ejection port so that the cannon can move in the x- and y-axis  <\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<p style=\"text-align:center\" class=\"has-medium-font-size\"><strong>#3 Sensor Pugh-matrix<\/strong> <\/p>\n\n\n\n<p>What sensors are most adequate for a cannon? Given the options at hand, there are three criteria that make a lot of sense; Range, Accuracy and compatibility.  From a scale of 1-5, which of the available options wins out? Here&#8217;s a look.<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/Sensor-pugh-matrix.png\" alt=\"\" class=\"wp-image-4164\" width=\"626\" height=\"209\" srcset=\"https:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/Sensor-pugh-matrix.png 732w, https:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/Sensor-pugh-matrix-300x100.png 300w\" sizes=\"auto, (max-width: 626px) 100vw, 626px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<p style=\"text-align:center\" class=\"has-medium-font-size\"><strong>#4 Component list<\/strong> (Subject to change)<\/p>\n\n\n\n<figure class=\"wp-block-image is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/image-31-1024x154.png\" alt=\"\" class=\"wp-image-4249\" width=\"619\" height=\"92\" srcset=\"https:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/image-31-1024x154.png 1024w, https:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/image-31-300x45.png 300w, https:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/image-31-768x115.png 768w\" sizes=\"auto, (max-width: 619px) 100vw, 619px\" \/><\/figure>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<p style=\"text-align:center\" class=\"has-medium-font-size\"><\/p>\n\n\n\n<hr class=\"wp-block-separator\" \/>\n\n\n\n<p style=\"text-align:center\" class=\"has-medium-font-size\"><strong>#5 A-, B- and C-Requirements<\/strong> (Subject to change)<\/p>\n\n\n\n<p><strong>A-krav<\/strong><\/p>\n\n\n\n<p>Maskin krav:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Lage kanon styrt av arduino med en fyrings mekanisme&nbsp;<\/li><li> Fyring av et bestemt prosjektil, maks vekt 0.5 kg <\/li><li> 3-D printed kanonl\u00f8p&nbsp;&nbsp; <\/li><\/ul>\n\n\n\n<p>Elektro og data krav:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>  Rotering og justering i y-akse <\/li><li> Smart styring av l\u00f8p for presis avfyring <\/li><li> Positions gjenkjennelse, klare \u00e5 treffe objekter som st\u00e5r fast <\/li><\/ul>\n\n\n\n<p><strong>B-krav<\/strong><\/p>\n\n\n\n<p>Maskin krav:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Ha mulighet for og skyte opp til 3 forskjellige prosjektil<\/li><li> Kanonen skal kunne treffe m\u00e5let med 75% av dens skudd<br>(antatt at brukerfeil ikke oppst\u00e5r.) <\/li><\/ul>\n\n\n\n<p>Elektro og data krav:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Bluetooth\/smartphone styring<\/li><\/ul>\n\n\n\n<p><strong>C-krav<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Ha mulighet til \u00e5 tracke og treffe et objekt i bevegelse<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>Ha mulighet til og skyte alle typer prosjektil som veier under 0.5 kg.<\/li><\/ul>\n\n\n\n<ul class=\"wp-block-list\"><li>Valg av prosjektilet skal skje automatisk fra kanonen med \u00e5 m\u00e5le b\u00f8lgestyrke som kommer tilbake fra objektet (jo tyngre objekt, jo st\u00f8rre b\u00f8lgestyrke, jo tyngre prosjektil)<br><\/li><\/ul>\n\n\n\n<p><\/p>\n\n\n\n<p>#6 <strong>Ejection chamber solidworks<\/strong> (Daniel) <br><br>While talking with our professors, we discovered that we had overbuilt the cannon immensely. We had planned on constructing it with a 25mm diameter metal barrel. which turned out to be a mayor complication when it came to loadbearing and servomotor power. <br>The barrel alone would way about 16kg, which when trying to track objects to shoot at is suboptimal.<\/p>\n\n\n\n<p><\/p>\n\n\n\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"551\" src=\"http:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/image-30-1024x551.png\" alt=\"\" class=\"wp-image-4242\" srcset=\"https:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/image-30-1024x551.png 1024w, https:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/image-30-300x161.png 300w, https:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/image-30-768x413.png 768w, https:\/\/dronesonen.usn.no\/wp-content\/uploads\/2020\/09\/image-30.png 1036w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption>Here is a representation of the barrel and launch plate of the BIG design<\/figcaption><\/figure>\n\n\n\n<p>Therefore, wee needed to downscale the cannon in order to make it achievable to build within our timeframe and with our resources.<br>The main factor we reduced was the barrels inner diameter, which got changed from 200mm to  40. <\/p>\n\n\n\n<p>Now, as the springs we have ordered is on the way. we are close to producing our first prototype. <\/p>\n\n\n\n<p class=\"has-medium-font-size\">#7 <strong>HMS of the cannon<\/strong>(Daniel)<\/p>\n\n\n\n<p>When it comes to the safety aspetcs of building a cannon, there is much to consider.<br>Dangers such as shooting out eyes, pinching of fingers or bodypart and blugenoing dangers as the cannon tracks targets.<br>General caution solves most of theese. Practices such as wearing safety glasses and protective gloves mitigate much of the danger. <br><br>There is a potential sollution in software aswell. Maybe coding a software barrier.<br>If the force on the cannon as it turns is greater than it should. Then the barrel should stop mooving for a while, to make sure that it does not blugeon the user.  <\/p>\n\n\n\n<p><br><br><br><br><br><br><\/p>\n","protected":false},"excerpt":{"rendered":"<p>in week 39 we worked with further developing the program that is going to aim the cannon. <\/p>\n","protected":false},"author":74,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62],"tags":[71,82,68,67,72,69],"class_list":["post-4163","post","type-post","status-publish","format-standard","hentry","category-smartsystems2020","tag-components","tag-fenrir","tag-meeting","tag-progress-post","tag-safety","tag-sensor"],"_links":{"self":[{"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=\/wp\/v2\/posts\/4163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=\/wp\/v2\/users\/74"}],"replies":[{"embeddable":true,"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=4163"}],"version-history":[{"count":5,"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=\/wp\/v2\/posts\/4163\/revisions"}],"predecessor-version":[{"id":4251,"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=\/wp\/v2\/posts\/4163\/revisions\/4251"}],"wp:attachment":[{"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=4163"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=4163"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/dronesonen.usn.no\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=4163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}