{"id":449,"date":"2014-04-14T16:16:26","date_gmt":"2014-04-14T14:16:26","guid":{"rendered":"http:\/\/www.verelec.nl\/?page_id=449"},"modified":"2014-04-14T16:16:26","modified_gmt":"2014-04-14T14:16:26","slug":"powerfull-servo-using-windshield-wiper-motor","status":"publish","type":"page","link":"https:\/\/www.verelec.nl\/?page_id=449","title":{"rendered":"Powerfull servo using windshield wiper motor"},"content":{"rendered":"<p>This isn&#8217;t my idea, but for a project (converting a dashboard in a Honda Civie 1998) I needed a strong servo motor. We tried\u00a0 an MG996R first. But that was way to weak. So why not use a Windshield wiper motor used in a car. They have a worm-gear mechanism, cost little and need no maintenance.<\/p>\n<p>Most of these motors will require about 2-3A to operate at 12V. I used a L298D board (ebay) for driving the motor. <a href=\"https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/L298.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-451\" alt=\"L298\" src=\"https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/L298.jpg\" width=\"640\" height=\"512\" srcset=\"https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/L298.jpg 640w, https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/L298-300x240.jpg 300w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/a><\/p>\n<p>Next was something needed to measure the position. I saw a youtube film of someone glueing a potentiometer onto the shaft and using that as measurement. However potentiometers might wear out too soon until I found a very nice compact adjustable potentiometer (bourns 3382H-1-103).<\/p>\n<p><a href=\"https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/R7703150-01.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-450\" alt=\"R7703150-01\" src=\"https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/R7703150-01.jpg\" width=\"444\" height=\"349\" srcset=\"https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/R7703150-01.jpg 444w, https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/R7703150-01-300x235.jpg 300w\" sizes=\"(max-width: 444px) 100vw, 444px\" \/><\/a><\/p>\n<p>These pots can rotate continuously. But only work for about a 300 degrees range.<\/p>\n<p>I am using a simple ATTiny45 as a controller to compare the potmeter value to a set value. And that is all. I can get the 5V from the L298D board. I made a prototype board for testing purposes. So far it seems quite succesful.<\/p>\n<p>On the Windshield wiper motor the shaft is replace with a stronger shaft with ball bearings making it very stable. If all goes well I should have a very nice version at the Amsterdam Maker Festival 30-May to 1st of June 2014.<\/p>\n<p><a href=\"https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/IMG_0107.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-full wp-image-452\" alt=\"IMG_0107\" src=\"https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/IMG_0107.jpg\" width=\"3264\" height=\"2448\" srcset=\"https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/IMG_0107.jpg 3264w, https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/IMG_0107-300x225.jpg 300w, https:\/\/www.verelec.nl\/wp-content\/uploads\/2014\/04\/IMG_0107-1024x768.jpg 1024w\" sizes=\"(max-width: 3264px) 100vw, 3264px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This isn&#8217;t my idea, but for a project (converting a dashboard in a Honda Civie 1998) I needed a strong servo motor. We tried\u00a0 an MG996R first. But that was way to weak. So why not use a Windshield wiper &hellip; <a href=\"https:\/\/www.verelec.nl\/?page_id=449\">Lees verder <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"open","ping_status":"open","template":"","meta":{"footnotes":""},"_links":{"self":[{"href":"https:\/\/www.verelec.nl\/index.php?rest_route=\/wp\/v2\/pages\/449"}],"collection":[{"href":"https:\/\/www.verelec.nl\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.verelec.nl\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.verelec.nl\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.verelec.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=449"}],"version-history":[{"count":2,"href":"https:\/\/www.verelec.nl\/index.php?rest_route=\/wp\/v2\/pages\/449\/revisions"}],"predecessor-version":[{"id":454,"href":"https:\/\/www.verelec.nl\/index.php?rest_route=\/wp\/v2\/pages\/449\/revisions\/454"}],"wp:attachment":[{"href":"https:\/\/www.verelec.nl\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=449"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}