用micro:bit做一个手机音乐遥控器
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">本文<span style="color: black;">能够</span>学到:</strong></span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">1. 怎么将micro:bit与手机进行蓝牙连接</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">2. 用micro:bit做一个遥控器,<span style="color: black;">掌控</span>手机播放器</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Micro:bit 是英国广播<span style="color: black;">机构</span>(BBC)联合<span style="color: black;">非常多</span>企业推出的微型可编程计算机,设计初衷是为了让<span style="color: black;">每一个</span><span style="color: black;">孩儿</span>都能零<span style="color: black;">基本</span>接触计算机编程,不需要任何编程语言学习就<span style="color: black;">能够</span>直接上手。<span style="color: black;">更加多</span>介绍请看之前的<span style="color: black;">文案</span><a style="color: black;">用micro:bit做一个<span style="color: black;">能够</span>用的指南针</a>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd3fM2YWHZoQUkRqSwXMD1zSniaS0KhICuzuAG2By5un22eEMib5X37CQiaGjeUfECTSoCNR0FKjEr6ibQ/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">通常</span><span style="color: black;">咱们</span>是进入 https://makecode.microbit.org 这个网址,在<span style="color: black;">这儿</span>进行网页编程。写好指令后下载到micro:bit盘符,<span style="color: black;">或</span>把hex文件拷贝到盘符里。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd3fM2YWHZoQUkRqSwXMD1zSGRhpSicQACGpaU3XdnEmVez5JtuQdtxhEYBfJrNXnkAjjN4IfI7UycA/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">这次<span style="color: black;">咱们</span>用micro:bit来做一个遥控器,<span style="color: black;">掌控</span>手机音乐播放,切换乐曲。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">micro:bit自带蓝牙芯片,工作于低功耗蓝牙模式(BLE),安卓4.3和ios6以上系统都支持低功耗蓝牙模式。<span style="color: black;">咱们</span>要做的是<span style="color: black;">经过</span>手机或平板端的micro:bit应用把手机和micro:bit配对,<span style="color: black;">而后</span>让micro:bit运行相应的程序,<span style="color: black;">经过</span>蓝牙与手机通信就行了。 micro:bit<span style="color: black;">能够</span>跟ios、安卓或windows手机/平板配对。<span style="color: black;">意见</span><span style="color: black;">尽可能</span><span style="color: black;">运用</span>安卓设备来调试。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">micro:bit与手机蓝牙连接,在部分机型上可能会<span style="color: black;">显现</span>问题,<span style="color: black;">例如</span>同事的一台三星手机就总是连接失败。即使连接成功了,ios机型上可能<span style="color: black;">亦</span><span style="color: black;">不可</span>正常地相应micro:bit的蓝牙通信请求,<span style="color: black;">咱们</span>在一台iPhone手机上的所有尝试都不成功,最后是换了一个安卓手机才<span style="color: black;">实验</span>成功的。ios设备开放性可能有<span style="color: black;">有些</span>问题,<span style="color: black;">详细</span><span style="color: black;">原由</span>还需要后续分析。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">ios设备和安卓设备都<span style="color: black;">能够</span>用micro:bit应用与micro:bit进行蓝牙配对,<span style="color: black;">办法</span>基本类似。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcM95UJU6ZNEcjx0nEPW9DeUSWZUE4vXiaicRRKMRyiae23x3O4whnibmy8xg/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">点击应用上的配对按钮,<span style="color: black;">根据</span>提示操作,<span style="color: black;">这儿</span><span style="color: black;">重视</span>要<span style="color: black;">同期</span>按住A键和B键不放,<span style="color: black;">而后</span>按下板子<span style="color: black;">背面</span>的reset键,按一会再松开,<span style="color: black;">全部</span>过程中A键和B键始终保持按下状态。<span style="color: black;">而后</span>micro:bit会<span style="color: black;">显现</span>pairing mode字样,并<span style="color: black;">表示</span>一个图形,<span style="color: black;">咱们</span>把这个图形画到应用里。点击下一步</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcMloKXB0rYevtkQ5EA0sHLhYF4p6WwLlywHmpjkIu1hB6oEYRYmy1zqw/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">这儿</span>会提示<span style="color: black;">起始</span>连接,中间会<span style="color: black;">需求</span>输入一个6位数字,点击micro:bit的A键<span style="color: black;">表示</span>这个6位数字,ios版本直接输入就行,安卓版本则要从屏幕顶部下拉出<span style="color: black;">通告</span>框,点击请求配对的<span style="color: black;">通告</span>,输入6位数字,有一个30秒的时间限制。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">详细</span>配对细节<span style="color: black;">亦</span><span style="color: black;">能够</span>看这个视频</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">首次配对成功后,<span style="color: black;">倘若</span>连接中断,需要再配对时,点击connect,再点那个小的连接图标就<span style="color: black;">能够</span>重新连接,变绿了<span style="color: black;">便是</span>连接好了。这个重新连接功能在安卓上比较方便,ios设备上有可能重连不上。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcMHn9IQCbBG9tlwYO58D0FXnzibkExicz25f1YRBLz4lvKpfKuL5RfdLhA/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">材料和工具<span style="color: black;">名单</span></strong></span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">Micro:bit</span><span style="color: black;">主控板</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">数据线</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">Makecode在线</span><span style="color: black;">网</span><span style="color: black;">站,如 https://makecode.microbit.org</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">手机或平板电脑一部,音乐播放应用</span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">写程序</strong></span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">Martin Woolley是一位英国技术人员,曾参与了micro:bit的蓝牙模块<span style="color: black;">研发</span>。他在博客上分享过<span style="color: black;">有些</span>micro:bit蓝牙编程实例,这次<span style="color: black;">咱们</span>就直接照着操作一下。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">首要</span><span style="color: black;">咱们</span>进入 https://makecode.microbit.org 或其他在线编程网页,打开模块化编程界面,在进阶—>添加软件包选项中,把bluetooth和devices包加进来。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcM5kDCWl8vWf9whmOibKCiaVDheRrhdnib0Svl0CQ98OgzQovBTpOBVlWQw/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcM3QibE29ZXPwUBzZzRcao3Ml79pqZoqpt7RkcPOdBL3uW4G1mQuJLj6g/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">之后会提示radio模块和这两个模块不兼容,点击继续。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcMTfUZ54j36ZGDiaPcR6KPlOY73JGIibsiaT5lXJFEv3Vibe6FW7pXicC5z8w/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">能够</span>看到蓝牙和设备模块<span style="color: black;">已然</span>添加进来了。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcMW6qwdH6tT1jEa5gFRP8ECHViaViclvhTvDXoJFbJicRQRaXJiaXD9td74g/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">设备模块中的命令实现,直接依赖于蓝牙模块(添加设备模块会自动把蓝牙模块<span style="color: black;">亦</span>加进来),<span style="color: black;">咱们</span><span style="color: black;">这儿</span>直接<span style="color: black;">运用</span>设备模块中的“指示遥控”命令就行了。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcMJpMk1jM5rjpg65fj4M6HnsoXhIf8GvuzicKJf9TZXH7LAygUF0aQ1Og/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">手机和<span style="color: black;">外边</span>设备<span style="color: black;">经过</span>蓝牙通信不是什么<span style="color: black;">鲜嫩</span>事,<span style="color: black;">例如</span><span style="color: black;">有些</span>自拍杆<span style="color: black;">便是</span><span style="color: black;">经过</span>蓝牙跟手机连接的,连接后按自拍杆上的按键就<span style="color: black;">能够</span><span style="color: black;">掌控</span>手机相机应用拍照了。上图中<span style="color: black;">能够</span>看到设备模块中有不少命令,除了<span style="color: black;">能够</span><span style="color: black;">掌控</span>播放器,<span style="color: black;">亦</span><span style="color: black;">能够</span><span style="color: black;">掌控</span>相机。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcMm8zJibfINyJyjEv8Xe4thD8w1X666IhV6a7kBgicloTkiaoRrAZTwe4fA/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">程序如图,按A键切下一曲,按B键放上一曲,<span style="color: black;">同期</span>按下A+B键起到播放或暂停的<span style="color: black;">功效</span>,playing变量为1<span style="color: black;">暗示</span>正在播放音乐,为0时<span style="color: black;">暗示</span>已暂停。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">不论音乐播放应用是在前台<span style="color: black;">表示</span>还是后台播放,micro:bit的命令都有效。<span style="color: black;">表示</span>LED命令是随便画的,只是为了<span style="color: black;">晓得</span>程序正常运行了,标识一下是哪个设备,电脑还是手机上编译的。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;"><span style="color: black;">有些</span>说明</strong></span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">micro:bit上刷入编译好的带蓝牙指令的hex格式文件,当板子和手机/平板蓝牙配对成功之后,<span style="color: black;">就可</span>成功地与手机进行通信交互。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">这个hex文件<span style="color: black;">能够</span>是网上直接找来的,<span style="color: black;">亦</span><span style="color: black;">能够</span>是自己在电脑上编译的。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcM1Tu1piaA0WLGZMNlmvsEialRruj7jrYMXOTS3HksKYQMibNxLXhziaDubw/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">另外</span>,还<span style="color: black;">能够</span>在手机/平板上打开网页编程界面,在手机上进行编程后编译成hex文件<span style="color: black;">保留</span>到手机,<span style="color: black;">而后</span><span style="color: black;">经过</span>micro:bit应用的flash选项把手机上的这个hex文件<span style="color: black;">经过</span>蓝牙传输刷进micro:bit里,<span style="color: black;">这般</span>全程就只用一台手机/平板就行,数据线都<span style="color: black;">不消</span>了。(<span style="color: black;">然则</span>有些手机或浏览器可能打不开网页编程界面)</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><img src="https://mmbiz.qpic.cn/mmbiz_jpg/r3VSjKKWpd21YyDKZxAcPXbH2HxaZibcMIltAXyExnmR1r6jgsbAjI6Cx5YsnP5XWicEkeJFVASP2Ss2n3nEVHcw/640?wx_fmt=jpeg&tp=webp&wxfrom=5&wx_lazy=1&wx_co=1" style="width: 50%; margin-bottom: 20px;"></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在手机/平板上打开网页编程界面进行编译并刷入micro:bit这个过程不是必须的,<span style="color: black;">咱们</span>的<span style="color: black;">实验</span>中,<span style="color: black;">便是</span>直接在电脑上编译了一个hex文件,拷进micro:bit盘符中,把安卓手机跟micro:bit进行蓝牙配对后,就<span style="color: black;">能够</span><span style="color: black;">掌控</span>手机音乐播放器切换曲子了。手机端的micro:bit应用仅起到跟micro:bit进行蓝牙配对的<span style="color: black;">功效</span>。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">在<span style="color: black;">咱们</span>的<span style="color: black;">实验</span>中,iPhone和iPad在国内网络下,不论是用4g还是wifi,都几乎<span style="color: black;">没法</span>用safari浏览器打开在线编程界面。<span style="color: black;">然则</span>安卓设备就<span style="color: black;">无</span>问题 :-D,虽然<span style="color: black;">亦</span>要费<span style="color: black;">有些</span>时间,<span style="color: black;">况且</span>不是所有浏览器都<span style="color: black;">能够</span>成功。<span style="color: black;">一样</span>的当蓝牙配对断开时,安卓手机点重新连接<span style="color: black;">能够</span>很容易地连接上,ios则可能重连会失败,需要重新配对。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">看一下程序运行的效果吧</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">这次的编程很简单,<span style="color: black;">大众</span>直接在任意网页编程界面用模块化界面编译hex文件就行。<span style="color: black;">倘若</span>是安卓版本的micro:bit应用,<span style="color: black;">亦</span><span style="color: black;">能够</span>试试应用自带的几个演示程序。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><strong style="color: blue;">后续改进</strong></span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">此刻</span>的代码还有些缺陷,<span style="color: black;">倘若</span><span style="color: black;">同期</span><span style="color: black;">运用</span>micro:bit和手机应用屏幕按键来<span style="color: black;">掌控</span>播放的话,<span style="color: black;">那样</span>判断音乐是在播放状态还是暂停状态就不准确。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;">例如</span>,<span style="color: black;">倘若</span>用micro:bit的A+B键<span style="color: black;">掌控</span>音乐<span style="color: black;">起始</span>播放后,在手机播放器上按暂停,micro:bit程序还是会认为音乐<span style="color: black;">处在</span>播放状态,<span style="color: black;">此时</span>再按A+B键会<span style="color: black;">起步</span>暂停命令,这个指令不会生效,表现为按键后无反应,再按一次<span style="color: black;">才可</span>正常<span style="color: black;">掌控</span>手机播放器。<span style="color: black;">不外</span>这并不会影响<span style="color: black;">运用</span><span style="color: black;">便是</span>了。</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">近期<span style="color: black;">咱们</span>推出了micro:bit系列教程,点击链接<span style="color: black;">认识</span><span style="color: black;">更加多</span>:</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><a style="color: black;">用micro</a>:bit做一个<span style="color: black;">能够</span>用的指南针</p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><a style="color: black;">用micro:bit和3D打印做一个摩尔斯电码发报机</a></p><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;">
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;"><span style="color: black;"><span style="color: black;"><strong style="color: blue;">石斧创客</strong></span></span></p>
<p style="font-size: 16px; color: black; line-height: 40px; text-align: left; margin-bottom: 15px;">石斧(Handaxe)可能是人类最早制造出的工具。从石器木棒到3D打印,让<span style="color: black;">咱们</span>像祖先<span style="color: black;">同样</span>愉快地造点东西。</p><img src="data:image/svg+xml,%3C%3Fxml version=1.0 encoding=UTF-8%3F%3E%3Csvg width=1px height=1px viewBox=0 0 1 1 version=1.1 xmlns=http://www.w3.org/2000/svg xmlns:xlink=http://www.w3.org/1999/xlink%3E%3Ctitle%3E%3C/title%3E%3Cg stroke=none stroke-width=1 fill=none fill-rule=evenodd fill-opacity=0%3E%3Cg transform=translate(-249.000000, -126.000000) fill=%23FFFFFF%3E%3Crect x=249 y=126 width=1 height=1%3E%3C/rect%3E%3C/g%3E%3C/g%3E%3C/svg%3E" style="width: 50%; margin-bottom: 20px;">
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