{"version":"1.0","provider_name":"HP robots","provider_url":"https:\/\/hprobots.com\/es\/","title":"Using the line sensors - HP robots","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"ov3KZ9ghe0\"><a href=\"https:\/\/hprobots.com\/es\/lesson\/using-the-line-sensors\/\">Using the line sensors<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/hprobots.com\/es\/lesson\/using-the-line-sensors\/embed\/#?secret=ov3KZ9ghe0\" width=\"600\" height=\"338\" title=\"\u00abUsing the line sensors\u00bb \u2014 HP robots\" data-secret=\"ov3KZ9ghe0\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script>\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";l.querySelector&&d.addEventListener&&\"undefined\"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),o=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),c=new RegExp(\"^https?:$\",\"i\"),i=0;i<o.length;i++)o[i].style.display=\"none\";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute(\"style\"),\"height\"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):\"link\"===t.message&&(r=new URL(s.getAttribute(\"src\")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",function(){for(var e,t,s=l.querySelectorAll(\"iframe.wp-embedded-content\"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute(\"data-secret\"))||(t=Math.random().toString(36).substring(2,12),e.src+=\"#?secret=\"+t,e.setAttribute(\"data-secret\",t)),e.contentWindow.postMessage({message:\"ready\",secret:t},\"*\")},!1)))}(window,document);\n\/\/# sourceURL=https:\/\/hprobots.com\/wp-includes\/js\/wp-embed.min.js\n<\/script>\n","description":"Knowledge required This activity assumes that students are already familiar with the ultrasonic sensor and how to use it to measure distances and display lights. It also assumes that the Otto robots for this activity have line sensors connected in digital and also analog ports.\u00a0 Materials required Using the line sensors slides\u00a0 Otto Starter robot [&hellip;]"}