{"id":3655,"date":"2016-10-01T06:10:32","date_gmt":"2016-10-01T06:10:32","guid":{"rendered":"http:\/\/41j.com\/blog\/?p=3655"},"modified":"2016-10-01T06:10:32","modified_gmt":"2016-10-01T06:10:32","slug":"esp32-usb-stick-esp32-ch340g-buck-conv-sd-card","status":"publish","type":"post","link":"https:\/\/41j.com\/blog\/2016\/10\/esp32-usb-stick-esp32-ch340g-buck-conv-sd-card\/","title":{"rendered":"esp32 USB Stick (esp32 + ch340g + buck conv + sd card)"},"content":{"rendered":"<p><a href=\"http:\/\/41j.com\/blog\/2016\/10\/esp32-usb-stick-esp32-ch340g-buck-conv-sd-card\/esp32usb_r1\/\" rel=\"attachment wp-att-3656\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-3656\" src=\"http:\/\/41j.com\/blog\/wp-content\/uploads\/2016\/10\/esp32usb_r1.png\" alt=\"esp32usb_r1\" width=\"500\" height=\"148\" \/><\/a><\/p>\n<p>I&#8217;ve just finished the first revision of the esp32 version of the <a href=\"http:\/\/www.whitefordresearch.com\/products\/espusb-esp8266-usb-sd-card-interface-preorder\">espusb stick<\/a> and it&#8217;s now out to fab. I expect to have to do at least some rework and probably a couple more iterations before I&#8217;m happy with it. But if you want to hack around with it, the Kicad files and gerbers are below.<\/p>\n<p>As before the board contains a ch340g usb interface, buck converter (to generate 3.3v efficiently) and an SD card slot as well as the esp32. I have exactly one esp32 IC at the moment&#8230; so it might take some time to get this board up an running.<\/p>\n<p>This is also currently a 2 layer board, I think this should be fine, but it&#8217;s possible I&#8217;ll need to rework it as a 4 layer design at some point.<\/p>\n<p>Once I have a revision I&#8217;m comfortable it&#8217;ll go in the shop. If you&#8217;d like to pre-order it, let me know. For a hand assembled board it&#8217;ll probably be 20USD. Plug: if you buy stuff from <a href=\"http:\/\/www.whitefordresearch.com\/collections\/esp8266\">my shop<\/a> it makes it more likely that I&#8217;ll be able to get a production run done and put out a cheaper version.<\/p>\n<p>Kicad files and Gerbers: <a href=\"http:\/\/41j.com\/blog\/2016\/10\/esp32-usb-stick-esp32-ch340g-buck-conv-sd-card\/esp32_usb-tar\/\" rel=\"attachment wp-att-3658\">esp32_usb<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve just finished the first revision of the esp32 version of the espusb stick and it&#8217;s now out to fab. I expect to have to do at least some rework and probably a couple more iterations before I&#8217;m happy with it. But if you want to hack around with it, the Kicad files and gerbers [&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-3655","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-WX","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/3655","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=3655"}],"version-history":[{"count":2,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/3655\/revisions"}],"predecessor-version":[{"id":3660,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/3655\/revisions\/3660"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=3655"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=3655"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=3655"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}