{"id":208,"date":"2018-04-01T23:04:57","date_gmt":"2018-04-01T21:04:57","guid":{"rendered":"http:\/\/tronche.com\/blog\/?p=208"},"modified":"2019-01-22T23:24:11","modified_gmt":"2019-01-22T22:24:11","slug":"building-a-prototype-first","status":"publish","type":"post","link":"https:\/\/tronche.com\/blog\/2018\/04\/building-a-prototype-first\/","title":{"rendered":"Building a prototype first"},"content":{"rendered":"\n<p>I&#8217;m restarting the project and building a scaled-down prototype first to solve all the software problem on a cheaper model.\n<\/p>\n\n\n\n<p>I&#8217;ve settled on\n<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>STM32F4(46) for the mcu, because Chibios is well supported on it, unlike on Teensy 3.2 (and it&#8217;s very cheap)<\/li><li>433 MHz radio communication to be able to have free 1-10Hz data \nduring tuning, something impossible with satellite communication. I&#8217;m \nhoping a 2-3 km range, because this is the size of the pond where I&#8217;m \nplanning to do the tests<\/li><li>25 W solar panel (instead of 2x100W)<\/li><li>Hull made of EPS polystyrene, with a plaque of acrylic to assemble the components\n<ul><li>About 120 cm length, to have at least a 1:3 ratio, beam to hull,\n but it fits in the car trunk (unlike the full-scale model which is 3 \nmeters long).<\/li><\/ul><\/li><li>Cheap motors (needing maintenance between each test, but that&#8217;s ok)<\/li><\/ul>\n","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>I&#8217;m restarting the project and building a scaled-down prototype first to solve all the software problem on a cheaper model. I&#8217;ve settled on STM32F4(46) for <a class=\"mh-excerpt-more\" href=\"https:\/\/tronche.com\/blog\/2018\/04\/building-a-prototype-first\/\" title=\"Building a prototype first\">[&#8230;]<\/a><\/p>\n<\/div>","protected":false},"author":1,"featured_media":209,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[22],"tags":[],"class_list":["post-208","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-almabraxas-3-prototype"],"_links":{"self":[{"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/posts\/208","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/comments?post=208"}],"version-history":[{"count":1,"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/posts\/208\/revisions"}],"predecessor-version":[{"id":210,"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/posts\/208\/revisions\/210"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/media\/209"}],"wp:attachment":[{"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/media?parent=208"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/categories?post=208"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tronche.com\/blog\/wp-json\/wp\/v2\/tags?post=208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}