{"id":386,"date":"2015-08-30T14:59:33","date_gmt":"2015-08-30T21:59:33","guid":{"rendered":"http:\/\/www.f15sim.com\/?p=386"},"modified":"2015-08-30T15:26:02","modified_gmt":"2015-08-30T22:26:02","slug":"a-side-trip-to-engine-gauges","status":"publish","type":"post","link":"https:\/\/www.f15sim.com\/?p=386","title":{"rendered":"A side trip to engine gauges&#8230;"},"content":{"rendered":"<p>I&#8217;ve recently been working on getting the six engine gauges for the F-15 put together.\u00a0 Since I&#8217;m not going to be using real instruments, I needed to scratch build them.\u00a0 Last year I did a short demo that shows how I&#8217;m using a small OLED display to emulate the &#8220;odometer&#8221; style display that&#8217;s used in the Fuel Flow, Temperature and RPM gauges.\u00a0 I finally got around to doing the software integration and did a short video that shows both the air core and the OLED display working together:<\/p>\n<p><iframe loading=\"lazy\" title=\"Gauge driver circuit, full test.\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/OTaG68LzW08?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<p>Some weeks later, the boards I ordered from Osh Park arrived and I got the first one soldered up.<\/p>\n<p><a href=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-top.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-389\" src=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-top-233x300.jpg\" alt=\"board-top\" width=\"233\" height=\"300\" srcset=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-top-233x300.jpg 233w, https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-top-796x1024.jpg 796w, https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-top.jpg 1069w\" sizes=\"auto, (max-width: 233px) 100vw, 233px\" \/><\/a><a href=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-bottom.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-388\" src=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-bottom-236x300.jpg\" alt=\"board-bottom\" width=\"236\" height=\"300\" srcset=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-bottom-236x300.jpg 236w, https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-bottom-807x1024.jpg 807w, https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-bottom.jpg 1050w\" sizes=\"auto, (max-width: 236px) 100vw, 236px\" \/><\/a><\/p>\n<p>This is the top of the new interface board.\u00a0 The chip in the center is an LM293DD dual h-bridge chip.\u00a0 This is the surface mount version of the LM293D that I bread-boarded the circuit on.\u00a0 The header on the right goes to the OLED interface.<\/p>\n<p>The bottom of the board has a four pin connector that will go to the air core motor.<\/p>\n<p><a href=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-assy.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-387\" src=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-assy-300x205.jpg\" alt=\"board-assy\" width=\"300\" height=\"205\" srcset=\"https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-assy-300x205.jpg 300w, https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-assy-1024x699.jpg 1024w, https:\/\/www.f15sim.com\/wp-content\/uploads\/2015\/08\/board-assy.jpg 1497w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p>This is what the final assembly looks like after the Arduino Nano has been mounted.<\/p>\n<p>The USB connector is at the back end of the board and will be accessed through an opening in the back of the instrument.\u00a0 I&#8217;m still working on the design for the instrument core, so I don&#8217;t have much else to show yet.<\/p>\n<p>More soon!<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve recently been working on getting the six engine gauges for the F-15 put together.\u00a0 Since I&#8217;m not going to be using real instruments, I needed to scratch build them.\u00a0 Last year I did a short demo that shows how I&#8217;m using a small OLED display to emulate the &#8220;odometer&#8221; style display that&#8217;s used in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-386","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/posts\/386","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=386"}],"version-history":[{"count":1,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/posts\/386\/revisions"}],"predecessor-version":[{"id":390,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=\/wp\/v2\/posts\/386\/revisions\/390"}],"wp:attachment":[{"href":"https:\/\/www.f15sim.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=386"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=386"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.f15sim.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=386"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}