{"id":712,"date":"2010-12-19T18:41:42","date_gmt":"2010-12-19T08:41:42","guid":{"rendered":"http:\/\/www.madox.net\/blog\/?p=712"},"modified":"2010-12-19T21:53:56","modified_gmt":"2010-12-19T11:53:56","slug":"mecanum-wheel-base","status":"publish","type":"post","link":"http:\/\/www.madox.net\/blog\/2010\/12\/19\/mecanum-wheel-base\/","title":{"rendered":"Mecanum Wheel Base"},"content":{"rendered":"<p><a href=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/MecanumWheels.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-714\" title=\"Mecanum Wheels\" src=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/MecanumWheels-450x299.jpg\" alt=\"\" width=\"450\" height=\"299\" srcset=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/MecanumWheels-450x299.jpg 450w, http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/MecanumWheels-1024x681.jpg 1024w, http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/MecanumWheels.jpg 1800w\" sizes=\"auto, (max-width: 450px) 85vw, 450px\" \/><\/a> Mecanum wheel rover\/robot base for around $25! \u00a0Or around $110 with a 454Mhz Linux Processor with touch screen and wifi (Add Chumby + Servo controller). \u00a0Read on for build instructions.  <!--more--><a href=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03311A.jpg\"><\/a><\/p>\n<h2>The concept<\/h2>\n<p>There is no concept&#8230; I just wanted a wheel base that is cool and can be controlled by a *cough* iPhone [Android phone&#8230;] via Wifi.<\/p>\n<h2>The parts list<\/h2>\n<div id=\"_mcePaste\">\n<ul>\n<li>16 x M2x4 Self Tapping Screws ($0.22 for 20)\n<ul>\n<li><a href=\"http:\/\/www.lowpricerc.com\/product_info.php?cPath=18&amp;products_id=452\" target=\"_blank\">http:\/\/www.lowpricerc.com\/product_info.php?cPath=18&amp;products_id=452<\/a><\/li>\n<\/ul>\n<\/li>\n<li>28 x M3 Nuts \u00a0($1) :-\n<ul>\n<li>Your local hardware\/electronics store?\n<ul>\n<li>or<\/li>\n<\/ul>\n<\/li>\n<li><a href=\"http:\/\/www.lowpricerc.com\/product_info.php?cPath=18&amp;products_id=479\" target=\"_blank\">http:\/\/www.lowpricerc.com\/product_info.php?cPath=18&amp;products_id=479<\/a><\/li>\n<\/ul>\n<\/li>\n<li>28 x M3x30mm Bolts [I just realized I&#8217;m using M3x32mm&#8230;] ($3?)\n<ul>\n<li>Your local hardware\/electronics store?<\/li>\n<\/ul>\n<\/li>\n<li>28 x 3x6x2.5mm Bearings ($8.22 for 30):-\n<ul>\n<li><a href=\"http:\/\/www.lowpricerc.com\/product_info.php?cPath=33&amp;products_id=777\" target=\"_blank\">http:\/\/www.lowpricerc.com\/product_info.php?cPath=33&amp;products_id=777<\/a><\/li>\n<\/ul>\n<\/li>\n<li>4 x Continuous rotation servos ($13.6 for 4)\n<ul>\n<li><a href=\"http:\/\/www.lowpricerc.com\/product_info.php?products_id=745\" target=\"_blank\">http:\/\/www.lowpricerc.com\/product_info.php?products_id=745<\/a><\/li>\n<\/ul>\n<\/li>\n<li>1 x Pololu 6 Servo USB Controller ($19.95):-\n<ul>\n<li><a href=\"http:\/\/www.pololu.com\/catalog\/product\/1350\" target=\"_blank\">http:\/\/www.pololu.com\/catalog\/product\/1350<\/a><\/li>\n<\/ul>\n<\/li>\n<li>1 x Insignia Infocast 3.5&#8243; ($49.99 Sale!!!):-\n<ul>\n<li><a href=\"http:\/\/www.chumby.com\/pages\/infocast\" target=\"_blank\">http:\/\/www.chumby.com\/pages\/infocast<\/a><\/li>\n<\/ul>\n<\/li>\n<li>1 x Set of 3D Printed Parts (&lt;$15?)\n<ul>\n<li>56 x 3D Printed &#8220;Rollers&#8221;<\/li>\n<li>2 x 3D Printed &#8220;Left-handed&#8221; Hubs<\/li>\n<li>2 x 3D Printed &#8220;Right-handed&#8221; Hubs<\/li>\n<li>Download the set from\u00a0<a href=\"http:\/\/www.thingiverse.com\/thing:5206\">http:\/\/www.thingiverse.com\/thing:5206<\/a><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<p><strong>Assembly Instructions<\/strong><\/p>\n<ol>\n<li>For each wheel, attach the circular servo horn that comes with the servo with the hub using 4 M2x4 self tapping screws.<\/li>\n<li>For each wheel, insert 7 bearings into the &#8216;flanges&#8217; of the wheel.\n<ul>\n<li> Depending on your printer, this should be a tight fit. \u00a0If it doesn&#8217;t fit, gently file the inside of the hole or using a M6 drill bit to clear.<\/li>\n<\/ul>\n<\/li>\n<li>Attach the rollers onto each wheel with a M3 bolt and nut combination.\n<ul>\n<li>Again depending on your printer, the bolts should fit through (maybe a bit tight). \u00a0If they don&#8217;t fit use a M3 drill bit to clear the roller holes.<\/li>\n<\/ul>\n<\/li>\n<li>Attach each assembled wheel onto the servo.<\/li>\n<li>Calibrate the centre position of the servos using the small adjustment pot at the rear of the servo.\n<ul>\n<li>Send a centre 1.5ms signal to each servo and adjust the pot until the servo doesn&#8217;t move.<\/li>\n<\/ul>\n<\/li>\n<li>Attach each servo onto a frame using the mounting screws that come with the servo.<\/li>\n<\/ol>\n<div>You should end up with something like this&#8230;<\/div>\n<p><a href=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03311A.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-713\" title=\"Test Base\" src=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03311A-450x382.jpg\" alt=\"\" width=\"450\" height=\"382\" srcset=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03311A-450x382.jpg 450w, http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03311A-1024x869.jpg 1024w, http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03311A.jpg 1800w\" sizes=\"auto, (max-width: 450px) 85vw, 450px\" \/><\/a><\/p>\n<h2>How it shouldn&#8217;t look like after fitting the processor board&#8230;<\/h2>\n<p><a href=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03312A.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-medium wp-image-718\" title=\"Chumby One...How it won't look like\" src=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03312A-450x382.jpg\" alt=\"\" width=\"450\" height=\"382\" srcset=\"http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03312A-450x382.jpg 450w, http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03312A-1024x869.jpg 1024w, http:\/\/www.madox.net\/blog\/wp-content\/uploads\/2010\/12\/DSC03312A.jpg 1800w\" sizes=\"auto, (max-width: 450px) 85vw, 450px\" \/><\/a><\/p>\n<h2>Obligatory super short demo video<\/h2>\n<p style=\"text-align: center;\"><object classid=\"clsid:d27cdb6e-ae6d-11cf-96b8-444553540000\" width=\"425\" height=\"350\" codebase=\"http:\/\/download.macromedia.com\/pub\/shockwave\/cabs\/flash\/swflash.cab#version=6,0,40,0\"><param name=\"src\" value=\"http:\/\/www.youtube.com\/v\/huXzkrrOSYw\" \/><embed type=\"application\/x-shockwave-flash\" width=\"425\" height=\"350\" src=\"http:\/\/www.youtube.com\/v\/huXzkrrOSYw\"><\/embed><\/object><\/p>\n<h2>Product Endorsements<\/h2>\n<ul>\n<li>Designed using <a href=\"http:\/\/www.alibre.com\/\" target=\"_blank\">Alibre<\/a> CAD Software &#8211; Made drawing and modifying the wheel very easy.<\/li>\n<li>Printed using <a href=\"http:\/\/www.pp3dp.com\/\" target=\"_blank\">Up! 3D Printer<\/a> &#8211; The print quality is superb \ud83d\ude42<\/li>\n<li>Parts purchased primarily from<a href=\"http:\/\/www.lowpricerc.com\/\" target=\"_blank\"> LowPriceRC<\/a> &#8211; $3.40 for continuous rotation servos? Meh<\/li>\n<li><a href=\"http:\/\/robotsimple.com\/\" target=\"_blank\">Robot Simple<\/a> &#8211; Pololu reseller with free worldwide shipping! \u00a0(Wins a lot of points for me in Australia&#8230;)<\/li>\n<\/ul>\n<p>I&#8217;m not receiving any kickbacks from any of these companies but definitely wouldn&#8217;t mind some &lt;wink wink nudge nudge&gt;<\/p>\n<h2>Where&#8217;s the Software? \u00a0\/ Where is the Chumby(Infocast)?<\/h2>\n<p>Patience&#8230; I&#8217;m still waiting for my Infocast to rip up&#8230;<\/p>\n<p>Need to borrow an iOS 4.2 device to test too&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Mecanum wheel rover\/robot base for around $25! \u00a0Or around $110 with a 454Mhz Linux Processor with touch screen and wifi (Add Chumby + Servo controller). \u00a0Read on for build instructions.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[54,43,31,10,45],"class_list":["post-712","post","type-post","status-publish","format-standard","hentry","category-engineering","tag-3d-printing","tag-alibre","tag-chumby","tag-fun","tag-mechanical"],"_links":{"self":[{"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/posts\/712","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/comments?post=712"}],"version-history":[{"count":8,"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/posts\/712\/revisions"}],"predecessor-version":[{"id":716,"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/posts\/712\/revisions\/716"}],"wp:attachment":[{"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/media?parent=712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/categories?post=712"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.madox.net\/blog\/wp-json\/wp\/v2\/tags?post=712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}