<div class="document"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">注：* 为必填项</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><strong><span style="color: #0093e6;">请在报名阶段填写 ↓</span></strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">* 1、项目功能介绍</h3> <hr class="horizontal-splitline normal-bold-2"> <p>音乐喷泉是将喷水、灯光及音乐旋律构成一个有机的整体。在游乐场、公园、购物广场等公共场所喷泉采用了造假高昂的控制系统，搭建复杂的外围电路实现功能；并且多数只能在现场观赏，不能进入家庭。所以立意做一个微型音乐喷泉，能够将喷泉这种现代科技与艺术相结合的产品带入千家万户。能够随着乐曲旋律和节奏的变化，进行各种不同的喷水变换同时配合各种五彩绚丽的灯光照耀。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*2、项目属性</h3> <hr class="horizontal-splitline normal-bold-2"> <p>原创项目，首次公开。如有雷同，实属巧合。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">* 3、开源协议</h3> <hr class="horizontal-splitline normal-bold-2"> <p>GPL 3.0</p> <p style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><strong><span style="color: #0093e6;">请在竞赛阶段填写 ↓</span></strong></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*4、硬件部分</h3> <hr class="horizontal-splitline normal-bold-2"> <p>微型音乐喷泉硬件系统由微控制器电路、音频电路、水泵电机控制电路、彩灯控制电路、电源电路等部分组成，如下图所示。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img src="//image.lceda.cn/pullimage/djmJz0w2UuDGp8jLzu7rOAZmY1YcsMO1d3RPSOTb.jpeg" alt="" width="1920" height="1236"></p> <p align="center">音乐喷泉系统框图</p> <p align="center"><img src="//image.lceda.cn/pullimage/CKpqBOmmKqbYnzuDyQxadDGWMQ1fuGziODiPfiFY.jpeg" alt="" width="1518" height="1047">喷泉音箱电路图</p> <p><span>微控制器选用</span><span>SiP</span>封装的<span>ESP32-PICO-D4</span>，其集成两个<span>Tensilica LX6</span>处理器，最高工作频率为<span>240Mhz, </span>内置<span>448KB ROM</span>，<span>520KB SRAM(</span>包括<span>8KB RTC</span>内存<span>)</span>，<span>1Kb eFuse</span>、<span> 4MB SPI FLASH</span>，晶振内置。在<span>WiFi</span>的连接上，最高支持<span>150Mbps</span>；支持双模蓝牙<span>V4.2 BR/EDR</span>以及<span>BLE</span>。资源足够，性能方面也能满足设计要求。</p> <p align="center"><img src="//image.lceda.cn/pullimage/TnWg18R5hTewVPuYD2tCpXp3JBrXO1pgBFYYL87K.jpeg" alt="" width="1079" height="777"></p> <p align="center">微控制器电路</p> <p style="text-align: left;" align="center">充电和升压采用了IP5306芯片，具有2.1A充电电流，和5V/2.4A输出。为避免用户过充和过放，锂电池保护芯片采用DW06D。</p> <p><img src="//image.lceda.cn/pullimage/7Gntv5nkK07EAG9D79ilEg7Gr7xt0ZMCC1p0mgJP.jpeg" alt="" width="1396" height="334"></p> <p align="center">充电、升压和保护电路</p> <p style="text-align: left;" align="center">电源路径选择和<span>LDO</span>电路如下图所示：USB供电时优先通过USB供电。LDO采用RT9013-33GB有500mA电流满足系统供电要求。</p> <p align="center"><img src="//image.lceda.cn/pullimage/Z5OuIz8w5URqnaZAphg3emZFFTJtAhrIocwUixQE.jpeg" alt="" width="986" height="338"></p> <p align="center">电源路径选择和<span>LDO</span>电路</p> <p style="text-align: left;" align="center">为了方便开发阶段的调试和下载使用了CH340C。相比CH340G少了晶振能够节省一定的布局空间。板子各处预留了测试点，也可以通过测试点下载、调试程序。</p> <p align="center"><img src="//image.lceda.cn/pullimage/5g2Dxu4NmBcMQqcFhhnUS6fmEYaxLlsNvfd1k2G3.jpeg" alt="" width="920" height="374"></p> <p align="center">串口调试和下载电路</p> <p style="text-align: left;" align="center">音频解码部分使用了MAX98357A，将I2S数字信号信号转为模拟信号。5V供电时接4欧负载时最大3.2W功率输出，可以直接驱动喇叭工作，音质非常不错，适合轻量化IOT应用。设计上兼容了5V和3.3V供电，实际使用中贴上R19输入5V给芯片，R44未贴。输出端RC滤波滤除高频杂音。</p> <p align="center"> </p> <p align="center"><img src="//image.lceda.cn/pullimage/HRvOKCQwwFuDrNd7AteYoXXQtWoKscosYp63g7B7.jpeg" alt="" width="758" height="449"> </p> <p align="center">音频解码<span>&</span>功放电路</p> <p style="text-align: left;" align="center">彩灯使用的是<span>WS2812,</span>该电路为<span>NMOS</span>构成的电平转换电路。</p> <p style="text-align: left;" align="center"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/sBRstxfU0NmwwSoKDkcdcHHvQKm6ZdMwHr0CdmZr.jpeg" alt="" width="757" height="297"></p> <p align="center"><span>RGB</span>控制电路</p> <p style="text-align: left;" align="center">使用AO3400构成的电机驱动电路。因为电机为感性器件，加上了二极管泄流。</p> <p align="center"><img src="//image.lceda.cn/pullimage/CJBQUISqsGb3z8E1NQdd3iiXog9ZcjDXSWz1AuDJ.jpeg" alt="" width="950" height="365"></p> <p align="center">电机控制电路</p> <p style="text-align: left;" align="center">以下为预留的电路，为了今后软件开发增加更多的功能而设计，在Layout中多数放在背面也未贴片，如果JLC支持双面贴片，这些电路也就可以调试用起来了。</p> <p style="text-align: left;" align="center"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/nYHikyTehvkgaqKttVrCHUQEckecAyZNUlUQvikc.jpeg" alt="" width="487" height="562"></p> <p align="center"><span>IMU</span>电路</p> <p align="center"><img src="//image.lceda.cn/pullimage/WpJWNwIgpx6CfJihX578djYqXzSyziUvvOXdmwzB.jpeg" alt="" width="916" height="563"></p> <p align="center"><span>MEMS MIC</span>电路</p> <p align="center"><img src="//image.lceda.cn/pullimage/ujWZ5h5YK9n0Tbrv5LaRmXKpQlDpttCikHBjUGHC.jpeg" alt="" width="755" height="372"></p> <p align="center"><span>TF</span>卡电路</p> <p align="center"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-left-indent-1.6em" style="line-height: 1.8;">注：本项目未使用力创EDA，无法享用PCB券(✖╭╮✖)。</p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*5、软件部分</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/iZ2MAjD7S00dsDkY7f6LD0qkVcmzrMIOCCswDHNW.jpeg" alt="" width="800" height="328"></p> <p>其主要原理是通过无线接收音频数据，经过快速傅里叶变换后，输出<span>PWM</span>控制电机，根据<span>WS2812</span>彩灯协议对彩灯进行控制。同时将音频数据经过<span>I2S</span>接口输入到音频解码芯片，通过喇叭播放声音。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-left-indent-1.6em" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*6、BOM清单</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;"><img src="//image.lceda.cn/pullimage/1bGBL9kUtYMXxxqzgqg0YlAixnjj3gOqKs8BJu1x.png"></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">*7、大赛LOGO验证</h3> <hr class="horizontal-splitline normal-bold-2"> <p style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img src="//image.lceda.cn/pullimage/AmnrnPElqWao6x1IROUU3l09V31GokqxZMcSgIpf.png" alt="" width="3554" height="3200"></p> <p align="center">底层</p> <p align="center"><img src="//image.lceda.cn/pullimage/scGkvIgiSJs9EJidZHmUEgZx3w67svyPQE5aXMBZ.png" alt="" width="3554" height="3200"></p> <p align="center">顶层</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><img style="display: block; margin-left: auto; margin-right: auto;" src="//image.lceda.cn/pullimage/BPhxVJPxCn2F6O3MvrQYgfT76APQDdtuN79bTx6b.jpeg" alt="" width="800" height="305"></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: center;">实物图（拍摄技巧拙劣，请勿责怪）</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;">说明1：前文已经说明因为预留电路多数放在背面，并非核心功能所以未贴片焊接，热切期盼JLC早日推出双面贴片</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;">说明2：板子可以放在壳体内，视频中为了演示此板在工作所以摆在外面。</p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8; text-align: left;"> </p> <h3 class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;">* 8、演示您的项目并录制成视频上传</h3> <hr class="horizontal-splitline normal-bold-2"> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"><span style="font-size: 14px;">更多详情：<a href="/posts/06c94d90c2c447dfbd9ed7339ff4a5b1" target="_blank">https://diy.szlcsc.com/posts/06c94d90c2c447dfbd9ed7339ff4a5b1</a></span></p> <p class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt" style="line-height: 1.8;"> </p> </div>