{"id":20,"date":"2008-08-23T11:44:08","date_gmt":"2008-08-23T15:44:08","guid":{"rendered":"http:\/\/www.logicalzero.com\/blog\/?p=20"},"modified":"2014-05-23T01:15:42","modified_gmt":"2014-05-23T05:15:42","slug":"ralph-the-barcode-reading-robot","status":"publish","type":"post","link":"http:\/\/www.logicalzero.com\/blog\/?p=20","title":{"rendered":"RALPH, the barcode-reading robot."},"content":{"rendered":"<div style=\"float: left; margin-right: 10px; margin-bottom: 10px; margin-left:20px;\"><a href=\"http:\/\/www.flickr.com\/photos\/27076997@N00\/2788898411\/\" title=\"photo sharing\"><img src=\"http:\/\/farm4.static.flickr.com\/3027\/2788898411_ecaf8bde4e_m.jpg\" alt=\"\" style=\"border: solid 2px #000000;\" \/><\/a><br \/><span style=\"font-size: 0.9em; margin-top: 0px;\"><br \/><\/span><\/div>\n<p>I mentioned my then-unnamed robot project in my last post. While I still haven&#8217;t managed to finish my write-up for it, I did finally upload some photos to Flickr, just to build some momentum.<\/p>\n<p>The short of it: the robot is designed to be a teaching aid for little kids to learn the basic concepts of programming. Instructions are encoded onto tiles over which the robot moves; these tiles are keyed like puzzle-pieces to provide a physical representation of the language&#8217;s syntax. It&#8217;s based on a Propeller microcontroller and uses a hacked PS\/2 CueCat scanner to read the barcodes.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I mentioned my then-unnamed robot project in my last post. While I still haven&#8217;t managed to finish my write-up for it, I did finally upload some photos to Flickr, just to build some momentum. The short of it: the robot is designed to be a teaching aid for little kids to learn the basic concepts [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[6,24],"tags":[31,16,32,21],"_links":{"self":[{"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/20"}],"collection":[{"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=20"}],"version-history":[{"count":2,"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/20\/revisions"}],"predecessor-version":[{"id":43,"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/20\/revisions\/43"}],"wp:attachment":[{"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=20"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=20"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.logicalzero.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=20"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}