<h3 style="line-height:1.8;">项目功能介绍</h3> <hr> <p style="line-height:1.8;">1）待机显示：时间日期，天气信息，电量</p> <p style="line-height:1.8;">2）基础功能：实时对话（支持多语种），音量/亮度调节，播放音乐</p> <p style="line-height:1.8;">3）自定义：智能体人设，用户声纹识别</p> <p style="line-height:1.8;"> </p> <h3 style="line-height:1.8;">硬件部分</h3> <hr> <p style="line-height:1.8;"><span style="font-size:14pt;">1）电源</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">整个系统采用单节锂电池供电，型号为CR123A，输出电压3.7v，自带typec充电接口</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><img src="https://image.lceda.cn/oshwhub/pullImage/c54436cec25248a7a5c0d6a43d4d9487.png" alt="" width="246" height="359">                 <img src="https://image.lceda.cn/oshwhub/pullImage/e3c42e7695034651abdfb12acc464f00.png" alt="" width="514" height="357"></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><span style="font-size:14pt;">2）主控</span></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><span style="font-size:14pt;"><span style="font-size:12pt;">主控为SF32LB52开源模组，是一款通用型低功耗双模蓝牙MCU模组，采用思澈科技的 <code>SF32LB525UC6</code> 芯片，搭载 <code>Arm STAR-MC1</code> 双核处理器，工作频率高达 <code>240MHz</code>。<a href="https://item.szlcsc.com/45024582.html?lcsc_vid=Q1lZUFJQRFZfAl0ETldbBQAEQlJYXwdfRgIIU1RVRwAxVlNTQFFZVVJWRFFcUDtW" target="_blank">立创商城购买链接</a></span></span></span></p> <p style="line-height:1.8;"><img src="https://image.lceda.cn/oshwhub/pullImage/aa12bdde63014f269b144e2b5d3ff8a6.png" alt="aa12bdde63014f269b144e2b5d3ff8a6.png"></p> <p style="line-height:1.8;"><span style="font-size:12pt;">主控原理图中<code>VSYS</code>为3.7v电源输入、<code>VBATS</code>为电量检测引脚、<code>VDD33_VOUT2</code>是电源输出引脚，由主控对外输出3.3v，用于驱动各个外设</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><span style="font-size:14pt;">3）外设</span></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">a.按键与LED</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">用户唤醒按键U4：连接<code>PA34_KEY</code>引脚</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">自定义按键U3：连接<code>ENC_PA39</code>引脚</span></p> <p style="line-height:1.8;"><img src="https://image.lceda.cn/oshwhub/pullImage/0aa9b9fda211436093a066a7f365635b.png" alt="0aa9b9fda211436093a066a7f365635b.png"></p> <p style="line-height:1.8;"><img src="https://image.lceda.cn/oshwhub/pullImage/516b8792e0e94a968f70687f7dca5f4e.png" alt="516b8792e0e94a968f70687f7dca5f4e.png"></p> <p style="line-height:1.8;"><span style="font-size:12pt;">b.音频功放与麦克风</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><img src="https://image.lceda.cn/oshwhub/pullImage/7477b38902ce4c28b103efca3e72ff39.png" alt="7477b38902ce4c28b103efca3e72ff39.png"></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">H1为螺钉式接线端子，连接<a href="https://e.tb.cn/h.hAbQkdkmlngYXW5?tk=HJhl4KQTsV3" target="_blank">喇叭</a></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><img src="https://image.lceda.cn/oshwhub/pullImage/0e1b5256313b489cb90638a319437749.png" alt="0e1b5256313b489cb90638a319437749.png"></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">以上所有音频信号相关的信号线在PCB走线中做类差分处理，同时包地，减小干扰</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">走线示意图：</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><img src="https://image.lceda.cn/oshwhub/pullImage/f056be3f909544959f7437346ec58a03.png" alt="f056be3f909544959f7437346ec58a03.png"></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">c.SPI屏幕</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">本项目采用1.69寸8pinSPI彩屏，若屏幕排针过短可额外购买8pin排母连接</span></p> <p style="line-height:1.8;"><a href="https://e.tb.cn/h.hAbQkdkmlngYXW5?tk=HJhl4KQTsV3" target="_blank"><span style="font-size:12pt;">屏幕购买链接</span></a></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><img src="https://image.lceda.cn/oshwhub/pullImage/d270fcd3f54546ec8e1a4038fd4ba126.png" alt="d270fcd3f54546ec8e1a4038fd4ba126.png"></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">屏幕线序参考图：</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><img src="https://image.lceda.cn/oshwhub/pullImage/44767d79978a4196a11d30c257c3fb6c.jpg" alt="44767d79978a4196a11d30c257c3fb6c.jpg"></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">d.下载接口</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">项目固件采用CH340串口下载，需要自备USB转TTL模块，主控下载引脚使用排针引出</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><img src="https://image.lceda.cn/oshwhub/pullImage/aa58f71b37be4c98a83c83ae4dfa423a.png" alt="aa58f71b37be4c98a83c83ae4dfa423a.png"></span></p> <h3 style="line-height:1.8;">焊接注意事项</h3> <hr> <p style="line-height:1.8;"><span style="font-size:12pt;">1）先焊接主控，建议采用烙铁+助焊剂拖焊四周的引脚，<span style="background-color:#fbeeb8;">不建议给主控底部的焊盘上锡膏，防止短路</span></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">2）外围插件的焊接采用先低后高原则</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">3）区分正负极：LED长正短负；麦克风与外壳相连的引脚为负极</span></p> <p style="line-height:1.8;"><img src="https://image.lceda.cn/oshwhub/pullImage/04878d45c86648e3b7d9b5bfa06ae7ef.jpg" alt="04878d45c86648e3b7d9b5bfa06ae7ef.jpg"></p> <p style="line-height:1.8;"><img src="https://image.lceda.cn/oshwhub/pullImage/b26694d2de0c44e2a6bd7c3adcbd2fb1.jpg" alt="b26694d2de0c44e2a6bd7c3adcbd2fb1.jpg"></p> <h3 style="line-height:1.8;">固件烧写步骤</h3> <hr> <p style="line-height:1.8;"><span style="font-size:12pt;background-color:#fbeeb8;">此过程要求安装好电池并全程打开供电开关</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">1）烧录前：安装好电池，打开开关上电，数秒后观察到LED亮起，证明系统供电正常，电源焊接无误，可以进行烧录</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;"><img src="https://image.lceda.cn/oshwhub/pullImage/c05d9e90d8eb46308e64ee5baed62715.jpg" width="385" height="282" alt="c05d9e90d8eb46308e64ee5baed62715.jpg"></span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">2）连接CH340模块与主控的RX/TX/GND引脚</span></p> <p style="line-height:1.8;"><span style="font-size:12pt;">3）下载<a href="https://github.com/78/xiaozhi-sf32/releases" target="_blank">固件</a>中的</span><code>bootloader.bin</code>、<code>ER_IROM2.bin</code>、<code>ER_IROM3.bin</code>、<code>ER_IROM1.bin</code> 和<code>ftab.bin</code>这5个文件</p> <p style="line-height:1.8;">4）下载<a href="https://github.com/OpenSiFli/sftool/releases" target="_blank">sftool</a>，与上述5个文件放在同一路径</p> <p style="line-height:1.8;">5）根据不同固件版本输入相应powershell命令</p> <p style="line-height:1.8;"> </p> <h3 style="line-height:1.8;">参考资料</h3> <hr> <p style="line-height:1.8;"><a href="https://lceda002.feishu.cn/wiki/B2LLwyC7binHuJkkHGMce03wnWf?fromScene=spaceOverview" target="_blank">插件版小智AI设计教程</a></p> <p style="line-height:1.8;"><a href="https://github.com/OpenSiFli/sftool" target="_blank">sftool</a></p> <p style="line-height:1.8;"><a href="https://github.com/78/xiaozhi-sf32" target="_blank">xiaozhi-sf32</a></p> <p style="line-height:1.8;"><a href="https://xiaozhi.me/" target="_blank">小智AI控制面板</a></p> <p style="line-height:1.8;"><a href="https://ccnphfhqs21z.feishu.cn/wiki/F5krwD16viZoF0kKkvDcrZNYnhb" target="_blank">小智AI聊天机器人百科全书</a></p> <p style="line-height:1.8;"> </p>