{"id":1768,"date":"2016-03-17T22:46:21","date_gmt":"2016-03-17T21:46:21","guid":{"rendered":"http:\/\/www.sciencetronics.com\/greenphotons\/?p=1768"},"modified":"2025-06-16T18:37:58","modified_gmt":"2025-06-16T16:37:58","slug":"octopi-wifi-issues","status":"publish","type":"post","link":"https:\/\/www.sciencetronics.com\/greenphotons\/?p=1768","title":{"rendered":"OctoPi &#8211; WiFi issues"},"content":{"rendered":"<p>Next step in my journey into 3D-printing would be to set up a server to remote-control my 3D-printer. Since two weeks ago I have a spare Raspberry Pi 2 lying around and Google quickly revealed the <a href=\"http:\/\/octoprint.org\/\" target=\"_blank\">existence of OctoPrint<\/a>.<\/p>\n<p>Ok, downloading the image of <a href=\"https:\/\/www.youtube.com\/watch?v=MwsxO3ksxm4\" target=\"_blank\">OctoPi<\/a> and writing it to a micro-SD, making the necessary changes in <i>octopi-network.txt<\/i> should not be a problem. Let&#8217;s just add the TPLink USB-WiFi dongle which I knew has been working on the Raspberry Pi for ages and that should be it.<\/p>\n<p>Not so quickly, thought Murphy, and threw a stick into my spokes. The activity LED in the WiFi dongle stayed dark and my router also did not show any new device. Of course I did not connect a keyboard, mouse and screen, sitting in my sofa &#8211; just my laptop near me. What now?<\/p>\n<p>The quickest solution was to connect a USB-UART to my laptop and to the <a href=\"http:\/\/www.raspberry-projects.com\/pi\/pi-hardware\/raspberry-pi-2-model-b\/rpi2-model-b-io-pins\" target=\"_blank\">UART pins on the Raspberry Pi header<\/a> in order to connect to the <a href=\"http:\/\/elinux.org\/RPi_Serial_Connection\" target=\"_blank\">default serial console<\/a> on the Raspberry Pi. And what did I get?<\/p>\n<div class=\"codecolorer-container text default\" style=\"overflow:auto;white-space:nowrap;width:435px;\"><div class=\"text codecolorer\">Direct firmware load for rtlwifi\/rtl8188eufw.b in failed with error -2<\/div><\/div>\n<p>Google again &#8211; yes, in some distributions for the Raspberry Pi the driver for just my WiFi chipset must have been forgotten to be included. Luckily, <a href=\"https:\/\/www.raspberrypi.org\/forums\/viewtopic.php?t=91939\" target=\"_blank\">also this was solvable<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Next step in my journey into 3D-printing would be to set up a server to remote-control my 3D-printer. Since two weeks ago I have a spare Raspberry Pi 2 lying around and Google quickly revealed the existence of OctoPrint. Ok, downloading the image of OctoPi and writing it to a micro-SD, making the necessary changes [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","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,"enabled":false},"version":2}},"categories":[47,22,11,8],"tags":[],"class_list":["post-1768","post","type-post","status-publish","format-standard","hentry","category-3d-printing","category-computers_en","category-electronics_en","category-everything_en","entry"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p48grL-sw","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts\/1768","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1768"}],"version-history":[{"count":4,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts\/1768\/revisions"}],"predecessor-version":[{"id":2379,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=\/wp\/v2\/posts\/1768\/revisions\/2379"}],"wp:attachment":[{"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1768"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1768"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.sciencetronics.com\/greenphotons\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1768"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}