{"id":8012,"date":"2012-11-03T10:13:57","date_gmt":"2012-11-03T14:13:57","guid":{"rendered":"http:\/\/scruss.com\/blog\/?p=8012"},"modified":"2012-11-03T10:13:57","modified_gmt":"2012-11-03T14:13:57","slug":"yay-tiny-stepper-motor","status":"publish","type":"post","link":"https:\/\/scruss.com\/blog\/2012\/11\/03\/yay-tiny-stepper-motor\/","title":{"rendered":"yay tiny stepper motor!"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-8013\" title=\"symbol technologies 50-03500-028 stepper motor\" src=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2012\/11\/517_10152226649815508_1963583097_n.jpg\" alt=\"\" width=\"612\" height=\"612\" srcset=\"https:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2012\/11\/517_10152226649815508_1963583097_n.jpg 612w, https:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2012\/11\/517_10152226649815508_1963583097_n-160x160.jpg 160w, https:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2012\/11\/517_10152226649815508_1963583097_n-320x320.jpg 320w, https:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2012\/11\/517_10152226649815508_1963583097_n-300x300.jpg 300w\" sizes=\"auto, (max-width: 612px) 100vw, 612px\" \/><\/p>\n<p><a href=\"http:\/\/www.activesurplus.ca\/en\/home.html\">Active Surplus Electronics<\/a> is the best. I was wanting to learn about driving stepper motors from a microcontroller, but didn&#8217;t want to spend a lot or rig up a complex power supply. Active Surplus had a bin of tiny 5V stepper motors at under $3 each. The one I bought is marked:<\/p>\n<pre>50-03500-    028\r\nMADE IN\r\n MALAYSIA   7115\r\nSYMBOL TECHNOLOGIES, INC.<\/pre>\n<p>I have no data sheet, but I&#8217;ve been able to work out that it&#8217;s a unipolar stepper motor, 20 steps\/revolution (18\u00c2\u00b0\/step; quite coarse), wired:<\/p>\n<ul>\n<li>Centre tap: Brown<\/li>\n<li>Coil A: White, Red<\/li>\n<li>Coil B: Orange, Blue<\/li>\n<\/ul>\n<p>It&#8217;s small enough to be driven directly by USB power through an Arduino and the Adafruit <a href=\"http:\/\/www.ladyada.net\/make\/mshield\/index.html\">Motor Shield<\/a>. No idea how much torque this thing puts out, but it can&#8217;t be much.<\/p>\n<p>(Setting up my motor shield was a pain, as I&#8217;d accidentally put non-stacking headers on it. This required an hour of swearing-filled desoldering; lead-free through-hole desoldering is just the worst<sup><a href=\"#note4321\">*<\/a><\/sup>. With wick and solder pump, I finally managed to clear everything up well enough to fit the new headers.)<br \/>\n<!--more--><br \/>\n<sup><a id=\"note4321\" name=\"note4321\"><\/a>*<\/sup>: though dooming generations to imbecility due to lead poisoning from indiscriminate lead use is probably the actual worst. I can live with an hour of swearing and minor burnies.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Active Surplus Electronics is the best. I was wanting to learn about driving stepper motors from a microcontroller, but didn&#8217;t want to spend a lot or rig up a complex power supply. Active Surplus had a bin of tiny 5V stepper motors at under $3 each. The one I bought is marked: 50-03500- 028 MADE [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[2],"tags":[2581,2207,2580],"class_list":["post-8012","post","type-post","status-publish","format-standard","hentry","category-goatee-stroking-musing-or-something","tag-active_surplus","tag-arduino","tag-stepper_motor"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pQNZZ-25e","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/posts\/8012","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/comments?post=8012"}],"version-history":[{"count":3,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/posts\/8012\/revisions"}],"predecessor-version":[{"id":8016,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/posts\/8012\/revisions\/8016"}],"wp:attachment":[{"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/media?parent=8012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/categories?post=8012"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/tags?post=8012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}