{"id":3299,"date":"2018-12-16T04:45:55","date_gmt":"2018-12-16T12:45:55","guid":{"rendered":""},"modified":"2026-09-28T07:40:07","modified_gmt":"2026-09-28T14:40:07","slug":"3299","status":"publish","type":"post","link":"https:\/\/www.vernier.com\/til\/3299","title":{"rendered":"Independence of Motion Accessory Troubleshooting &#038; FAQs"},"content":{"rendered":"<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><a href=\"\/product\/independence-of-motion-accessory\/\">Independence of Motion Accessory<\/a> (<nobr>IOM-VPL<\/nobr>)<\/h3>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<p class=\"wp-block-paragraph\"><a href=\"\/manuals\/IOM-VPL\">Specifications and User Guide<\/a><\/p>\n<\/div>\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\">\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/www.vernier.com\/wp-content\/uploads\/2019\/11\/product.iom-vpl._hero.001-scaled.jpg\" alt=\"\"\/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<h3 class=\"wp-block-heading\">Troubleshooting<\/h3>\n<p class=\"wp-block-paragraph\"><strong> Primary Tests<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li>Does the Vernier Projectile Launcher or Go Direct Projectile Launcher launch a projectile when the Independence of Motion Accessory is not attached? Do you have power to the launcher?<br \/>\u26ac The Vernier Projectile Launcher requires power from a interface or <a href=\"\/product\/labquest-power-supply\/\">LabQuest<sup>&reg;<\/sup> Power Supply<\/a> (<nobr>LQ3-PS<\/nobr>).<br \/>\u26ac Go Direct Projectile Launcher requires power from a USB power outlet, power brick, or active USB port on a device.<\/li>\n<li>Is the Independence of Motion Accessory seated completely into the barrel of the Projectile Launcher?<br \/>\u26ac Make sure the device is completely seated into the barrel and the cotter pin is in place to ensure it is positioned correctly.  It can take some effort to push it in all the way.<\/li>\n<\/ul>\n<p class=\"wp-block-paragraph\"><strong>Secondary Test<\/strong><\/p>\n<ul class=\"wp-block-list\">\n<li>Does the vertically dropped ball (metal or plastic) release simultaneously?<br \/>\u26ac Occasionally the ball (especially the plastic ball) that sits on the metal pin gets hung up.<br \/>\u26ac Putting the ball on and removing it several times should eliminate any unwanted friction that may interfere with its operation.<\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Additional Troubleshooting<\/h3>\n<ul class=\"wp-block-list\">\n<li>Do not insert the drilled balls into the main barrel; use them only on the outer pin.<\/li>\n<li>The photogates in the projectile launchers cannot be used simultaneously with the Independence of Motion accessory.<\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Related Articles<\/h3>\n<ul class=\"wp-block-list\">\n<li>For the <a href=\"\/product\/go-direct-projectile-launcher\/\">Go Direct<sup>&reg;<\/sup> Projectile Launcher<\/a> (<nobr>GDX-PL<\/nobr>)<br \/>\u26ac <a href=\"\/til\/4196\/\">Go Direct Projectile Launcher Troubleshooting and FAQs<\/a><\/li>\n<li>For the <a href=\"\/product\/vernier-projectile-launcher\/\">Vernier Projectile Launcher<\/a> (<nobr>VPL<\/nobr>)<br \/>\u26ac <a href=\"\/til\/2592\/\">Vernier Projectile Launcher Troubleshooting and FAQs<\/a><br \/>\u26ac <\/li>\n<\/ul>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<h3 class=\"wp-block-heading\">Operation<\/h3>\n<p class=\"wp-block-paragraph\">The device slides (with resistance) into the barrel and seats (using two &#8220;O&#8221; rings) into the launching chamber. It is secured in place with a plastic cotter pin. The burst of air pushes a ball at the angle of the barrel (typically horizontal) from the extended barrel and simultaneously releases another ball to drop in free fall.<\/p>\n<div style=\"height:20px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\">Related Products<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/product\/time-of-flight-pad\/\">Time of Flight Pad<\/a> (<nobr>TOF-VPL<\/nobr>)<\/li>\n<li><a href=\"\/product\/projectile-stop\/\">Projectile Stop<\/a> (<nobr>PS-VPL<\/nobr>)<\/li>\n<\/ul>\n<\/div>\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<h3 class=\"wp-block-heading\">Replacement Parts<\/h3>\n<ul class=\"wp-block-list\">\n<li><a href=\"\/product\/replacement-balls-for-independence-of-motion-accessory\/\">Replacement Balls for Independence of Motion Accessory<\/a> (<nobr>IOM-BLS<\/nobr>)<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<p class=\"wp-block-paragraph\">","protected":false},"excerpt":{"rendered":"<p>Specifications and User Guide Troubleshooting Primary Tests Secondary Test Additional Troubleshooting Related Articles Operation The device slides (with resistance) into the barrel and seats (using&#8230;<\/p>\n","protected":false},"author":1698,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[],"tags":[5590,5589,5588,5587,4313],"class_list":["post-3299","post","type-post","status-publish","format-standard","hentry","tag-accessory-for-gdx-pl","tag-accessory-for-vpl","tag-independence-of-motion","tag-iom-vplmain-maintil-iom-vpl-iom-vpl","tag-vernier-projectile-launcher"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/3299","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/users\/1698"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/comments?post=3299"}],"version-history":[{"count":1,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/3299\/revisions"}],"predecessor-version":[{"id":27527,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/posts\/3299\/revisions\/27527"}],"wp:attachment":[{"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/media?parent=3299"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/categories?post=3299"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vernier.com\/til\/wp-json\/wp\/v2\/tags?post=3299"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}