<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 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;">为了增强孩子学习的积极性，我参加了小智AI训练营，学习</span>基于立创开源蓝牙模组制作的简易AI对话机器人，实现AI实时语音对话。</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="color: #95a5a6; font-size: 14px;">…</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> <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;">注：主题不限，可以是解决生活/工作中的某个问题、为某个人群/场景设计的方案、毕业设计/课程设计/DIY项目/纯属炫酷项目等。主要讲一下自己通过什么手段解决了什么问题。</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;">*<span style="color: #95a5a6;">项目是首次公开；项目为原创；项目未曾在其他比赛中获奖。</span></h3> <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="color: #95a5a6; font-size: 14px;">注：请说明项目是否首次公开；项目是否为原创；项目是否曾经在其他比赛中获奖，若有获奖则叙述获奖详情；项目是否在学校参加过答辩。</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;">* 3、开源协议</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;">Public Domain开源协议</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> <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;">注：利他即利己，请认真阅读下述内容。</span></p> <ol style="line-height: 1.8;"> <li class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-hanging-indent-1.6em" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">拥抱开源，赋予项目无限价值。建议项目核心功能开源80%以上；</span></li> <li class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-hanging-indent-1.6em" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">2、若某一部分功能不可替代且删掉之后项目无法解决对应的问题，则这一部分实现的功能就是项目的核心功能；比如设计了一台电子负载且设计了一款上位机软件监控功率变化，则电子负载为核心功能，上位机软件为辅助功能；比如电子负载中使用了一款隔离485模块与上位机通信，则此485模块实现的通讯功能为辅助功能； </span></li> <li class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-hanging-indent-1.6em" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">项目应选择适合自己的<span style="text-decoration: underline;"><a href="/posts/98fdb2accd754af7b51990790db3b47a" target="_blank">开源协议</a></span>，若项目引用其他开源项目，应注明来源并遵循原作者的开源协议规定；原创项目推荐使用GPL3.0开源协议；</span></li> <li class="paragraph text-align-type-left pap-line-1.3 pap-line-rule-auto pap-spacing-before-3pt pap-spacing-after-3pt pap-hanging-indent-1.6em" style="line-height: 1.8;"><span style="color: #95a5a6; font-size: 14px;">直接引用开源项目的原电路或原代码实现的功能不可作为自己项目的核心功能、使用市场上通用模块直接实现的功能不可作为自己项目的核心功能。</span></li> </ol> <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 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;">项目原理图如下：</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;"><span style="color: #95a5a6;"><img src="//image.lceda.cn/pullimage/lqKmAcRYC5X4xYid02L8yjlcvniX4zuecxd1U2wd.png" alt="" width="750" height="525"></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;">第一部分  主控</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/I7TiB2LImryGJo7teV9gtlItQHIFn6yXXdcksyT4.png" alt="" width="311" height="388"></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> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">主控用的是 [立创·开源SF32LB52模组]，一款蓝牙低功耗芯片，频率 <strong>240MHz</strong>，集成 8MB PSRAM 和 16MB Flash，支持锂电池直接供电。BLE 连接功耗（1S间隔）仅需 7μA，BT连接功耗（1S间隔）仅需 10μA，BLE + BT 双连接功耗比同行单BT连接功耗还能降低 60%。</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">第二部分  电池和开关</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"><img src="//image.lceda.cn/pullimage/BsHOPe3DUQSKyiAxnawFyczwYIug6q9WwZXxfUrA.png" alt="" width="246" height="282"></div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">SW1是电源总开关，负责电源通断。通过锂离子电池直接为模块供电。</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> <div> <div class="ace-line ace-line old-record-id-FXMSdSFaeo7qvixtQv9ccrBnnMS">在本项目中，直接让电池电源直连模组的电源输入引脚 VSYS。这里需要注意<span style="color: #d83931;"><code>该模组电压范围要求 3.7V~4.7V</code></span>。3.3V 和 5V 供电都不行。</div> <div class="ace-line ace-line old-record-id-FXMSdSFaeo7qvixtQv9ccrBnnMS">模组的 VDD33_VOUT2 是由软件控制输出的，需要芯片正常启动后才有输出3V3。</div> <div class="ace-line ace-line old-record-id-FXMSdSFaeo7qvixtQv9ccrBnnMS"> </div> </div> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">第三部分  麦克风</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"><img src="//image.lceda.cn/pullimage/Itlm822UPXiFsP4YYRunxkf68tB4mcBZgrjfWYzl.png" alt="" width="249" height="232"></div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> <div> <div class="ace-line ace-line old-record-id-RdtOdUlpxoMM4dxR5NTcc9kynNd">在原理图中，R1电阻的作用就是给麦克风的正极输入一个基准电压MIC_BIAS，这个电压是由模组控制输出的，由模组控制则可以在要用时才输出，不用时关闭，实现低功耗。R1 的电阻值为 10K，测试效果能够接受，过低则采集的音频信号弱，过高则易引入噪声。</div> <div class="ace-line ace-line old-record-id-KnoNdHRuNongD8xj85rcdlSanvd">C1 电容的作用就是对采集的信号进行滤波，滤除高频噪声，大多是滤除滋滋滋的声音或者声音沙哑问题。</div> </div> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">此处C1电容不建议改，会影响音质和音量。</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">第四部分  按键</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"><img src="//image.lceda.cn/pullimage/Fy6bmMxid2KIaSJAJSBGz6hZ2lHkOD0ieaWPipI1.png" alt="" width="658" height="174"></div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">本项目通过按键进行控制，SW3 PA34_KEY 是唤醒键 + 语音输入键，按下 SW3 按键可以让主控从低功耗睡眠状态唤醒，当主控正在工作时，按下按键进行语音输入。</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">第五部分  LED指示灯</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> <div> <div class="ace-line ace-line old-record-id-SfBddWO3yoozmYxOHc5cOWqun7W"><img src="//image.lceda.cn/pullimage/2QqLHnqcI3M7CLSOamfbqBfxofnZtdZXlp0AfCJX.png" alt="" width="256" height="130"></div> <div class="ace-line ace-line old-record-id-SfBddWO3yoozmYxOHc5cOWqun7W">用于指示模组状态。通过模组IO控制。PA32_LED输出低电平LED灯亮，PA32_LED输出高电平LED灯灭。</div> </div> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">第六部分  屏幕</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"><img src="//image.lceda.cn/pullimage/q1VA9duRIMfowKHgSX1VEmNYAI4WRVNcX4jcTxBP.png" alt="" width="183" height="141"></div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">此项目使用 1.69寸TFT屏幕，采购自 <a href="https://item.taobao.com/item.htm?id=694205959541" target="_blank">金逸晨1.69寸TFT液晶屏ST7789小屏240x280显示器LCD圆角屏SPI彩屏</a>，</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> <div> <div class="ace-line ace-line old-record-id-D3bCdR0Rpoa1VtxvC5Ccgv0JnBe">屏幕通过SPI协议控制，供电 3.3V。</div> <div class="ace-line ace-line old-record-id-SSEGdPzvJobZBWx0x8zcDwTkncc">这里SPI的通信控制信号引脚，可以使用主控的硬件SPI外设，实现更高的通信速率，更快的屏幕刷新。但是使用主控的硬件SPI外设，则需要选择特定的引脚。</div> <div class="ace-line ace-line old-record-id-SC6Ldd4kWosjcQxqYfJcifrAnrf"> </div> <div class="ace-line ace-line old-record-id-HYbvd3M1doo66lxlT7TcXtZPnUf"><strong>模组与屏幕的连接</strong></div> <div> <table class="ace-table" style="border: none; table-layout: fixed; width: 500px;"> <tr style="height: 39px;"> <th style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top; font-weight: 500; background-color: #f2f3f5; text-align: left;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-E9e2dGhZyo4mELx2YbLcV8T6nYd">模组</div> </th> <th style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top; font-weight: 500; background-color: #f2f3f5; text-align: left;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-B3badvxOIozsZoxRpVKcsoIlnVe">1.69寸TFT屏幕</div> </th> <th style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top; font-weight: 500; background-color: #f2f3f5; text-align: left;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-O6IXdLLy1owXpmxbHx1ccLvlnUb">说明</div> </th> </tr> <tr style="height: 39px;"> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-HQnodEsCSoswWsxjOtjco9wInqe" style="text-align: center;">GND</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-OdQsdzFlioyRXQxFsQTcxn2GnQc" style="text-align: center;">GND</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-OMood2AjEobGHQxUR7NcsYVGn1e">屏幕电源地</div> </td> </tr> <tr style="height: 39px;"> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-MlJKdsOTRoGjlqx9vEvcPvMNnQe" style="text-align: center;">VDD33_VOUT2</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-Sax3dSarFoTL3LxJfYCcITRFnEc" style="text-align: center;">VCC</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-K64IdBllQokzMsxw6lYchc6snub">屏幕电源输入</div> </td> </tr> <tr style="height: 39px;"> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-T4K8dDkczoFzhvxhbszc3AdQnpb" style="text-align: center;">PA04</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-Ftdtd8xYxoSqlZxVt1lcmVvCnxc" style="text-align: center;">DO(SCL)</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-HuxrdJl2so6ucXxrghjcolHinbh">屏幕通信时钟引脚</div> </td> </tr> <tr style="height: 39px;"> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-GehQdsePhoenhoxfQ6sctavrnUb" style="text-align: center;">PA05</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-SNybdXOQBontUnxnARGcIY1snBb" style="text-align: center;">D1(SDA)</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-DCPkdbq7soZTQYxnYmpcngp2nOd">屏幕通信数据引脚</div> </td> </tr> <tr style="height: 39px;"> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-XOP4dVYG9oLchMxfU0TcH6Aknxd" style="text-align: center;">PA00</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-QGLtdaDgUoMoA6x4eodcEljJngg" style="text-align: center;">RES</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-G9KcdyFhdogSn5xXRBjcGXz5nHg">屏幕屏幕复位引脚</div> </td> </tr> <tr style="height: 39px;"> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-OkOddefOxojwDCxEPsQc6ldMnrd" style="text-align: center;">PA06</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-JSGOdYqRLoDf4txVgh0cLFo6nt6" style="text-align: center;">D/C</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-MhMYdHLodo1yQVxFqbDcUS4Lnhc">屏幕读写功能引脚</div> </td> </tr> <tr style="height: 39px;"> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-JTDXdN8HhobyZkxQhbucTiN0nlB" style="text-align: center;">PA03</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-KwU5duj76oCgcSxdwwzcznaYnle" style="text-align: center;">CS</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-H7JTd2fLloDtF7x7HBdcZwfqnd0">屏幕通信片选引脚</div> </td> </tr> <tr style="height: 39px;"> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-VOEvdI2OLo3o6xxEdZPcUQzlnHd" style="text-align: center;">PA42</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-H3dEd0PAWoomPyxg6pfcYrkFnFc" style="text-align: center;">BLK</div> </td> <td style="border-color: #dee0e3; font-size: 10pt; padding: 8px; vertical-align: top;" colspan="1" rowspan="1"> <div class="ace-line ace-line old-record-id-XMpJdub0SohDsqxKjozczg0RnKb">屏幕背光控制引脚，高电平屏幕背光亮</div> </td> </tr> </table> </div> </div> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd">第七部分  音频功放与喇叭</div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"><img src="//image.lceda.cn/pullimage/HR41qyjId5O0RO8Bja5AbUwRMHes8IRPJB97tvux.png" alt="" width="647" height="227"></div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> <div> <div class="ace-line ace-line old-record-id-VThjdrlxhoetkfxINm9ciXDHnxe">音频功放主要以上图的 U3 为主，它型号是 LM4871，是一款 3W、单声道 AB 类音频功率放大器，工作电压 1.9 - 5.5V。</div> </div> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> <div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih">功放芯片的 1 脚 Shutdown 是芯片掉电控制引脚，为高电平时功放停止工作实现低功耗；为低电平时功放正常工作。在原理图中通过 R8 电阻让该引脚默认为高电平即芯片默认停止工作，当需要功放工作时，需要主控的 PA26 引脚输出低电平才能工作，这样只有需要用的时候才开，不用的时候默认关闭，以节约用电。</div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih"> </div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih">第八部分  充电电路</div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih"><img src="//image.lceda.cn/pullimage/PQgYeD24ITH6JQvzKQ5jprDUBASkVpk25kFxhk59.png" alt="" width="392" height="340"></div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih">以TC4056A芯片为主，通过简单的几个外围器件，实现5V电源电压对电池充电，并通过指示灯进行充电指示和充满指示。</div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih"> </div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih">第九部分  串口下载</div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih"><img src="//image.lceda.cn/pullimage/AQF8J5KFFf2oan40AVK6ILLzKcItaOZjQGy9EFuA.png" alt="" width="256" height="174"></div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih"> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih">模组的下载是通过串口进行下载的，必须使用 PA18 和 PA19 引脚下载。​</div> <div class="ace-line ace-line old-record-id-CGImdCLRFo01Twxpyt7cbLsXnih">本项目直接使用 CH340X 模块的接口作为下载器。实测能够正常下载和串口调试通信。</div> </div> </div> </div> <div class="ace-line ace-line old-record-id-MqjSddo9IohESExcGXMcISRSnLd"> </div> </div> <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;"> 注：请前往<span style="text-decoration: underline;"><a href="https://lceda.cn/editor" target="_blank">嘉立创EDA</a> </span>生成/上传设计文件，文件完成后，相关文稿将自动生成至项目详情；这里可以详细说明您的项目实现原理和机制、注意事项、调试方法、测试方法等。推荐图文并茂的形式向别人介绍您的想法。 </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 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;">*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;"><span style="color: #95a5a6; font-size: 14px;">请输入内容…</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> <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;">注：若您的项目涉及软件开发，请在附件上传对应的工程源码。这里可以详细说明您的软件流程图、功能模块框图、相关算法的解释或科普、源码结构、编译环境的搭建和配置、源码编译方法、程序烧录方法等。推荐图文并茂的形式向别人介绍您的想法。</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 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;">请输入内容…</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> <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;">注：项目涉及的BOM清单。在<span style="text-decoration: underline;"><a href="https://lceda.cn/editor" target="_blank">嘉立创EDA</a> </span>生成/上传设计文件后，BOM将自动生成至项目详情；建议包括型号、品牌、名称、封装、采购渠道、用途等内容。具体内容和形式应以表达清楚项目构成为准。 </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;"><img src="//image.lceda.cn/pullimage/0bHW3fsBkyspromehPyd0ywYJs1fx1aDdaNiL8gh.png" alt="" width="524" height="310"></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="color: #95a5a6; font-size: 14px;">请上传包含大赛logo的项目图片，logo以丝印形式印刷在PCB上面。</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;"><span style="color: #95a5a6; font-size: 14px;">点击zip下载大赛logo标识！ <span style="text-decoration: underline;"><a href="https://image.lceda.cn/easyedaResource/images/d1bbfd69f9404f56901a0e7b849b7245.rar" target="_blank">（大赛标识）.zip</a></span></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;">* 8、演示您的项目并录制成视频上传</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;"><span style="color: #95a5a6; font-size: 14px;">视频要求：请横屏拍摄，分辨率不低于1280×720，格式Mp4/Mov，单个视频大小限100M内；</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;"><span style="color: #95a5a6; font-size: 14px;">视频标题：立创电赛：{项目名称}-{视频模块名称}；如立创电赛：《自动驾驶》-团队介绍。</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> <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;"><a href="/posts/42551e8f2f2548cabc1c36626a42da94" target="_blank">前往查看更多详情 ＞</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>