{"id":944,"date":"2016-08-14T13:02:19","date_gmt":"2016-08-14T12:02:19","guid":{"rendered":"http:\/\/ofalcao.pt\/blog\/?p=944"},"modified":"2016-08-14T13:02:19","modified_gmt":"2016-08-14T12:02:19","slug":"lego-dimensions-ev3-reading-tags","status":"publish","type":"post","link":"https:\/\/ofalcao.pt\/blog\/2016\/lego-dimensions-ev3-reading-tags","title":{"rendered":"LEGO Dimensions + EV3: reading tags"},"content":{"rendered":"<p>I started fiddling with LEGO Dimensions Toy Pad and the Mindstorms EV3. Later I&#8217;ll post better and more organized information but for now here is the script I used with the following video &#8211; it shows how to read the NGC tags and change the RGB color of each pad.<\/p>\n<p>All my code is based on <a href=\"https:\/\/github.com\/woodenphone\/lego_dimensions_protocol\">woodenphone<\/a> work.<\/p>\n<div class=\"jetpack-video-wrapper\"><iframe loading=\"lazy\" title=\"LEGO Dimensions + EV3: reading tags\" width=\"840\" height=\"473\" src=\"https:\/\/www.youtube.com\/embed\/YoTsh-bwHiQ?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<pre>\r\n#!\/usr\/bin\/python\r\n\r\nimport usb.core\r\nimport usb.util\r\nfrom time import sleep\r\n\r\nimport lego_dimensions_gateway\r\n\r\n# UIDs can be retrieved with Android App (probably in hexadecimal)\r\nuidDarthVader = (4, 161, 158, 210, 227, 64 , 128)\r\n\r\npad1_red = [0x55, 0x0e, 0xc8, 0x06, 0x01, 0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] # left:off center:red right:off\r\n\r\npad1_green = [0x55, 0x0e, 0xc8, 0x06, 0x01, 0x00, 0xff, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] # left:off center:green\r\n\r\npad2_red = [0x55, 0x0e, 0xc8, 0x06, 0x01, 0x00, 0x00, 0x00, 0x01, 0xff, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] # left:red center:off right:off\r\n\r\npad2_green = [0x55, 0x0e, 0xc8, 0x06, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0xff, 0x00, 0x01, 0x00, 0x00, 0x00, 51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] # left:green center:off right:off\r\n\r\npad3_red = [0x55, 0x0e, 0xc8, 0x06, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0xff, 0x00, 0x00, 51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] # left:off center:off right:red\r\n\r\npad3_green = [0x55, 0x0e, 0xc8, 0x06, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0xff, 0x00, 51, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] # left:off center:off right:green\r\n\r\npads_off = [0x55, 0x06, 0xc0, 0x02, 0x00, 0x00, 0x00, 0x00, 29, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00] # Switch all pads off\r\n\r\n\r\ndef init_usb():\r\n\u00a0\u00a0\u00a0 global dev\r\n\u00a0\u00a0\u00a0 # find our device\r\n\u00a0\u00a0\u00a0 dev = usb.core.find(idVendor=0x0e6f)# 0x0e6f Logic3 (made lego dimensions portal hardware)\r\n\r\n\u00a0\u00a0\u00a0 # was it found?\r\n\u00a0\u00a0\u00a0 if dev is None:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 raise ValueError('Device not found')\r\n\r\n\u00a0\u00a0\u00a0 reattach = False\r\n\u00a0\u00a0\u00a0 if dev.is_kernel_driver_active(0):\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 reattach = True\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 dev.detach_kernel_driver(0)\r\n\r\n\u00a0\u00a0\u00a0 # set the active configuration. With no arguments, the first\r\n\u00a0\u00a0\u00a0 # configuration will be the active one\r\n\u00a0\u00a0\u00a0 dev.set_configuration()\r\n\r\n\u00a0\u00a0\u00a0 # Initialise portal\r\n\u00a0\u00a0\u00a0 dev.write(1, [0x55, 0x0f, 0xb0, 0x01, 0x28, 0x63, 0x29, 0x20, 0x4c, 0x45, 0x47, 0x4f, 0x20, 0x32, 0x30, 0x31, 0x34, 0xf7, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00])# Startup\r\n\u00a0\u00a0\u00a0 return dev\r\n\r\ndef uid_compare(uid1, uid2):\r\n\u00a0 match = True\r\n\u00a0 for i in range(0,7):\r\n\u00a0\u00a0\u00a0 if (uid1[i] != uid2[i]) :\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 match = False\r\n\u00a0 return match \r\n\r\ndef demo():\r\n\u00a0\u00a0\u00a0 while True:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 try:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 inwards_packet = dev.read(0x81, 32, timeout = 10)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 bytelist = list(inwards_packet)\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if not bytelist:# We need a packet\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 pass\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 elif bytelist[0] != 0x56: # Only listen to NFC packets\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 pass\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 else:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 pad_num = bytelist[2]\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 uid_bytes = bytelist[6:13]\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 match = uid_compare(uid_bytes, uidDarthVader)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 action = bytelist[5]\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if action == 0 : #IN\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if match:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # Darth Vader IN\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if pad_num ==1 :\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 command = pad1_red\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 elif pad_num == 2 :\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 command = pad2_red\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 elif pad_num == 3 :\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 command = pad3_red\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 else :\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 pass\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 else:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 # some other tag IN\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 if pad_num ==1 :\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 command = pad1_green\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 elif pad_num == 2 :\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 command = pad2_green\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 elif pad_num == 3 :\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 command = pad3_green\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 else :\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 pass\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 \u00a0\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 dev.write(1, command)\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 elif action == 1 : # OUT\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 dev.write(1, pads_off)\r\n\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 except usb.USBError, err:\r\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 pass\r\n\r\ndef main():\r\n\u00a0\u00a0\u00a0 init_usb()\r\n\u00a0\u00a0\u00a0 demo()\r\n\u00a0\u00a0\u00a0 return\r\n\r\nif __name__ == '__main__':\r\n\u00a0\u00a0\u00a0 main()<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>I started fiddling with LEGO Dimensions Toy Pad and the Mindstorms EV3. Later I&#8217;ll post better and more organized information but for now here is the script I used with the following video &#8211; it shows how to read the NGC tags and change the RGB color of each pad. All my code is based &hellip; <a href=\"https:\/\/ofalcao.pt\/blog\/2016\/lego-dimensions-ev3-reading-tags\" class=\"more-link\">Continuar a ler<span class=\"screen-reader-text\"> &#8220;LEGO Dimensions + EV3: reading tags&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"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":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false},"version":2}},"categories":[1],"tags":[],"series":[],"class_list":["post-944","post","type-post","status-publish","format-standard","hentry","category-sem-categoria"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/p2Mhyv-fe","_links":{"self":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/posts\/944","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/comments?post=944"}],"version-history":[{"count":0,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/posts\/944\/revisions"}],"wp:attachment":[{"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/media?parent=944"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/categories?post=944"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/tags?post=944"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/ofalcao.pt\/blog\/wp-json\/wp\/v2\/series?post=944"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}