{"id":532,"date":"2014-11-26T04:26:22","date_gmt":"2014-11-26T04:26:22","guid":{"rendered":"http:\/\/blogs.discovery.wisc.edu\/wearable14\/?p=532"},"modified":"2014-12-19T18:32:51","modified_gmt":"2014-12-19T18:32:51","slug":"teb-update-11252014","status":"publish","type":"post","link":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/2014\/11\/26\/teb-update-11252014\/","title":{"rendered":"TEB Update 11\/29\/2014"},"content":{"rendered":"<ul>\n<li style=\"font-weight: inherit;font-style: inherit\">What did you do this week?<\/li>\n<\/ul>\n<p>For this week&#8217;s work, I soldered all the components onto the printed circuit board and to my surprise everything fit perfectly and\u00a0went very smoothly. \u00a0Now in the coming weeks, we&#8217;ll see if everything actually works.<\/p>\n<ul>\n<li style=\"font-weight: inherit;font-style: inherit\">Describe the problems you encountered<\/li>\n<\/ul>\n<p>One problem I faced was with the USB receptacle. The pins were so close together and I applied too much solder paste and as a result, there was a solder bridge between three pins. \u00a0This is an easy fix once I get my hands on some solder wick to remove some of that solder.<\/p>\n<p>Another problem \u00a0I faced was that I realized I forgot to order four 56R resistors that connect to the gate of the MOSFETs.\u00a0Now these resistors aren&#8217;t essential to the function of the circuit so \u00a0I just placed a wire across\u00a0the resistor pads to close the circuit.<\/p>\n<ul>\n<li style=\"font-weight: inherit;font-style: inherit\">Describe the successes you had<\/li>\n<\/ul>\n<p>One success I had was that all the footprints I custom designed fit the components perfectly.<\/p>\n<p>Another success was the method I used for soldering the tiny surface mount components to the board. First, I applied solder paste to the pads of the components. Then, I very carefully placed the devices on the pads using a fine tweezers bent at a 45 degree angle. The solder paste kept the components in place because of its consistency. I then put them in a toaster oven, set the degrees to 450 Fahrenheit and waited two minutes. \u00a0I had no issues soldering.<\/p>\n<ul>\n<li style=\"font-weight: inherit;font-style: inherit\">Are you on schedule?<\/li>\n<\/ul>\n<p>Yes I am on schedule. Now if my circuit has a problem where it will require me to resubmit a new PCB, then I will be behind schedule.<\/p>\n<ul>\n<li style=\"font-weight: inherit;font-style: inherit\">What do you plan to do next week?<\/li>\n<\/ul>\n<p>Next week, I plan to perform tests to ensure the board is functioning properly and if it is, then I will be uploading code and will test it using the thermoelectric cooler.<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/11.png\"><img loading=\"lazy\" class=\"alignnone size-medium wp-image-534\" src=\"http:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/11-230x300.png\" alt=\"1\" width=\"230\" height=\"300\" srcset=\"https:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/11-230x300.png 230w, https:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/11.png 412w\" sizes=\"(max-width: 230px) 100vw, 230px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/2.png\"><img loading=\"lazy\" class=\"alignnone size-medium wp-image-535\" src=\"http:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/2-300x280.png\" alt=\"2\" width=\"300\" height=\"280\" srcset=\"https:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/2-300x280.png 300w, https:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/2.png 471w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/4.png\"><img loading=\"lazy\" class=\"alignnone size-medium wp-image-537\" src=\"http:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/4-271x300.png\" alt=\"4\" width=\"271\" height=\"300\" srcset=\"https:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/4-271x300.png 271w, https:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/4.png 449w\" sizes=\"(max-width: 271px) 100vw, 271px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/4.png\"><img loading=\"lazy\" class=\"alignnone size-medium wp-image-536\" src=\"http:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/3-288x300.png\" alt=\"3\" width=\"288\" height=\"300\" srcset=\"https:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/3-288x300.png 288w, https:\/\/blogs.discovery.wisc.edu\/wearable14\/files\/2014\/11\/3.png 464w\" sizes=\"(max-width: 288px) 100vw, 288px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>What did you do this week? For this week&#8217;s work, I soldered all the components onto the printed circuit board and to my surprise everything fit perfectly and\u00a0went very smoothly. \u00a0Now in the coming weeks, we&#8217;ll see if everything actually works. Describe the problems you encountered One problem I faced was with the USB receptacle. &hellip; <a href=\"https:\/\/blogs.discovery.wisc.edu\/wearable14\/2014\/11\/26\/teb-update-11252014\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">TEB Update 11\/29\/2014<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":101,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[5,19],"tags":[],"_links":{"self":[{"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/posts\/532"}],"collection":[{"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/users\/101"}],"replies":[{"embeddable":true,"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/comments?post=532"}],"version-history":[{"count":5,"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/posts\/532\/revisions"}],"predecessor-version":[{"id":672,"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/posts\/532\/revisions\/672"}],"wp:attachment":[{"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/media?parent=532"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/categories?post=532"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blogs.discovery.wisc.edu\/wearable14\/wp-json\/wp\/v2\/tags?post=532"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}