{"id":5680,"date":"2020-02-14T16:44:41","date_gmt":"2020-02-14T16:44:41","guid":{"rendered":"https:\/\/41j.com\/blog\/?p=5680"},"modified":"2020-02-14T16:49:37","modified_gmt":"2020-02-14T16:49:37","slug":"esc-30a-brushless-dc-motor-driver-notes","status":"publish","type":"post","link":"https:\/\/41j.com\/blog\/2020\/02\/esc-30a-brushless-dc-motor-driver-notes\/","title":{"rendered":"ESC-30A Brushless DC motor driver Notes"},"content":{"rendered":"<p>I have a few of these cheap brushless dc motor drivers. The contain a small MCU and what appear to be half bridges (and I assume sense back EMF).<\/p>\n<p>I generally want to drive these from a function generator for quick experiments. The documentation isn&#8217;t written with this in mind, and it always takes me a little bit of fiddling. So here are my notes for next time.<\/p>\n<p>The driver can be powered by 12V DC. Looking at the transistors, it seemed like anything over about 20V could potentially fry the driver.<\/p>\n<p>To initialize the driver you need to apply the &#8220;low throttle&#8221; signal. This is a short pulse at 400Hz. I use a 1ms pulse, which seems to be fine.<\/p>\n<p>To get the motor running increase the pulse width. Maximum is 2ms. Applying a 2ms pulse when powering up the driver will not work.<\/p>\n<p>The control interface generally has 3 pins. Red, Black and White. White is the control signal. Black is ground. The driver has an onboard regulator to power the MCU, so you don&#8217;t need to supply anything to the red pin (which I assume can also power the regulator, and is potentially useful for reprogramming?).<\/p>\n<p>This documentation matches the driver I have:<\/p>\n<p><a href=\"http:\/\/www.sarkanyellato.hu\/wp-content\/uploads\/2011\/10\/RC-Timer-10.18.30.40A-ESC-Instruction.pdf\">http:\/\/www.sarkanyellato.hu\/wp-content\/uploads\/2011\/10\/RC-Timer-10.18.30.40A-ESC-Instruction.pdf<\/a><\/p>\n<p>Reference images below:<br \/><br \/><\/p>\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"4032\" height=\"3024\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2020\/02\/img_0197.jpg\" alt=\"\" class=\"wp-image-5679\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"4032\" height=\"3024\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2020\/02\/img_0194.jpg\" alt=\"\" class=\"wp-image-5675\"\/><figcaption>Initialization waveform<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"4032\" height=\"3024\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2020\/02\/img_0195.jpg\" alt=\"\" class=\"wp-image-5676\"\/><figcaption>Running waveform<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"4032\" height=\"3024\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2020\/02\/img_0196.jpg\" alt=\"\" class=\"wp-image-5677\"\/><\/figure>\n","protected":false},"excerpt":{"rendered":"<p>I have a few of these cheap brushless dc motor drivers. The contain a small MCU and what appear to be half bridges (and I assume sense back EMF). I generally want to drive these from a function generator for quick experiments. The documentation isn&#8217;t written with this in mind, and it always takes me [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-5680","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-1tC","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/5680","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/comments?post=5680"}],"version-history":[{"count":4,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/5680\/revisions"}],"predecessor-version":[{"id":5685,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/5680\/revisions\/5685"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=5680"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=5680"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=5680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}