{"id":1233,"date":"2015-01-31T14:54:51","date_gmt":"2015-01-31T14:54:51","guid":{"rendered":"http:\/\/www.ozone.me.uk\/wordpress\/?p=1233"},"modified":"2015-01-31T14:54:51","modified_gmt":"2015-01-31T14:54:51","slug":"homopolar-motor","status":"publish","type":"post","link":"https:\/\/ozone.me.uk\/?p=1233","title":{"rendered":"Homopolar Motor"},"content":{"rendered":"<p><a href=\"https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2909.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-1235\" src=\"https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2909-225x300.jpg\" alt=\"IMG_2909\" width=\"225\" height=\"300\" srcset=\"https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2909-225x300.jpg 225w, https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2909-768x1024.jpg 768w, https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2909-1152x1536.jpg 1152w, https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2909.jpg 1224w\" sizes=\"auto, (max-width: 225px) 100vw, 225px\" \/><\/a>So simple to build but hours of fun to &#8220;shape&#8221; your own version of this little electric <a href=\"http:\/\/en.wikipedia.org\/wiki\/Homopolar_motor\">homopolar<\/a> motor. You only need a AA battery, a few <a href=\"http:\/\/en.wikipedia.org\/wiki\/Neodymium\">Neodymium<\/a> magnets, and some copper wire.<\/p>\n<p>I ordered the magnets on Ebay and got 10 of them for a couple of sterling. Mine are 5mmX15mm circular ones. This is sort of right size for the AA batteries.<\/p>\n<p>The copper wire was reclaimed from a bit of house wiring and stripped the plastic outer sleeve. I roll the wire on the table to make it straight so that it is easier to make a balanced shape. It also &#8220;looks&#8221; better on the final product.<\/p>\n<p>I tried various diametre from very small to 1.5mm2. I recommend about 1mm2, because the smaller diameter heats up quite a lot and spins too fast anyway.<br \/>\n<iframe loading=\"lazy\" src=\"https:\/\/www.youtube.com\/embed\/0AjCl4wJZEk\" width=\"640\" height=\"480\" frameborder=\"0\" allowfullscreen=\"allowfullscreen\"><\/iframe><br \/>\nI make a small &#8220;dent&#8221; on the + side of the battery with a philips screw driver.<\/p>\n<p>Stack a couple of magnets on the negative side of the battery. (That&#8217;s the bottom of the battery).<\/p>\n<p>Then simply make a shape that will balance on the top and reach the magnet at the bottom. There is plenty of ideas for shapes on the net.<\/p>\n<p>As I was playing with the copper wires I could not resist making some sort of mini-sculpture with an intricate set of right angles which fool the eyes. Hacking during the weekend is a lot of fun.<\/p>\n<div id='gallery-1' class='gallery galleryid-1233 gallery-columns-3 gallery-size-thumbnail'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/ozone.me.uk\/?attachment_id=1239'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2904-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/ozone.me.uk\/?attachment_id=1238'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2903-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/ozone.me.uk\/?attachment_id=1237'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2902-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/ozone.me.uk\/?attachment_id=1236'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2901-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon portrait'>\n\t\t\t\t<a href='https:\/\/ozone.me.uk\/?attachment_id=1235'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2909-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a href='https:\/\/ozone.me.uk\/?attachment_id=1234'><img loading=\"lazy\" decoding=\"async\" width=\"150\" height=\"150\" src=\"https:\/\/ozone.me.uk\/wp-content\/uploads\/2015\/01\/IMG_2908-150x150.jpg\" class=\"attachment-thumbnail size-thumbnail\" alt=\"\" \/><\/a>\n\t\t\t<\/dt><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>So simple to build but hours of fun to &#8220;shape&#8221; your own version of this little electric homopolar motor. You only need a AA battery, a few Neodymium magnets, and some copper wire. I ordered the magnets on Ebay and &hellip; <a href=\"https:\/\/ozone.me.uk\/?p=1233\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,6],"tags":[],"class_list":["post-1233","post","type-post","status-publish","format-standard","hentry","category-electronics","category-home-life"],"_links":{"self":[{"href":"https:\/\/ozone.me.uk\/index.php?rest_route=\/wp\/v2\/posts\/1233","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ozone.me.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ozone.me.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ozone.me.uk\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/ozone.me.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1233"}],"version-history":[{"count":0,"href":"https:\/\/ozone.me.uk\/index.php?rest_route=\/wp\/v2\/posts\/1233\/revisions"}],"wp:attachment":[{"href":"https:\/\/ozone.me.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1233"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ozone.me.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1233"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ozone.me.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1233"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}