<p><div class="document"> <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;"><em> 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;">本项目基于训练营的桌面温湿度仪项目开发，采用STM32G030K6T6主控，具有按键唤醒、可充电、自动休眠的功能，除此之外预留串口屏接口，可连接串口屏使用。使用盛思锐SHT40温湿度传感器，通过I2C与传感器通信，电源电路使用TP4056电池管理芯片，PW5300升压稳压芯片，AMS1117线性稳压芯片</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;">&nbsp;</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;"></em>2、项目属性</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;">项目为训练营复刻项目稍作改动，非原创，首次公开。</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;"><em> 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;">GPL3.0</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;"></em>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;"><img src="//image.lceda.cn/oshwhub/a24d5da1396a4df099d1c640695ef171.png" alt="" width="1383" height="978" /></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;"><strong>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span style="font-size: 18pt;">项目整体原理图</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 pap-left-indent-1.6em" style="line-height: 1.8;"><span style="font-size: 18pt;"><strong>核心电路（MCU相关）</strong></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;"><strong><span style="font-size: 18pt;"><img src="//image.lceda.cn/oshwhub/75e6902113e246549ff2b7619bf10b30.png" alt="" width="1013" height="363" /></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 pap-left-indent-1.6em" style="line-height: 1.8;"><span style="font-size: 14pt;"><strong>主控MCU的供电由5V转3.3V电路整流滤波后输入，主控外围引脚根据定义进行使用，使用32.768KHz外部晶振提供计时(本次项目并未用到)，方便后期的功能拓展，添加手动复位键，便于调试，唤醒电路可以在需要温湿度显示的时候唤醒MCU，让数码管显示温湿度，在不需要的时候可以进入低功耗的待机状态，以节省能耗，测试led可以共调试初期测试MCU功能。</strong></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;"><span style="font-size: 18pt;"><strong>电源电路</strong></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;"><span style="font-size: 18pt;"><strong><img src="//image.lceda.cn/oshwhub/02c4d7caae954c3b815b3cbd20ab6747.png" alt="" width="950" height="363" /></strong></span></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;">&nbsp;</h3> <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;"><img src="//image.lceda.cn/oshwhub/2ed40b72e6704498944af5d7a14549db.png" alt="" width="1016" height="350" /></h3> <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;">&nbsp;</h3> <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;">&nbsp;</h3> <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;"><img src="//image.lceda.cn/oshwhub/c3d2fc6c9a1345e8b1d3fe2f505f44c9.png" alt="" width="876" height="355" /></h3> <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;">电源可分为三个部分</h3> <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;">一. 充电管理部分，使用最常用的充电管理IC TP4056进行充电操作，充电电流为800mA，在保证充电速度的情况下减少了芯片的发热。<br />二.5V升压稳压电路，为保证串口屏的正常使用，电源需提供5V电压，我这里使用的是PW5300升压稳压芯片，这款芯片具有低功耗，高转化率的特点，同时外围电路较为简单。<br />三，5V转3.3V降压电路，MCU及其他组件均使用3.3V，我这里选用的是ams1117芯片，这款芯片是最为常用的ido芯片，在压差不大的情况下其外围电路简单易上手，同时为了防止短路等情况损坏电路，我额外添加了一个6v 1.5A自恢复保险丝，保证在意外情况下能及时断开电路。</h3> <p><strong><span style="font-size: 18pt;">显示电路</span></strong></p> <p><img src="//image.lceda.cn/oshwhub/a5530775ce08475ca2a6d1d1b3cfa0fc.png" alt="" width="1383" height="656" /></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;">为了点亮多个数码管这边选用了SN74HC595PWR寄存器来连接数码管进行显示，通过MCU的单个引脚就能实现对LED数码管的控制，同时有很多群友反馈说数码管经常乱跳，不亮等情况，大多数都是595的焊接问题，在焊接时犹其要注意有无连锡，虚焊等情况。</h3> <p><strong><span style="font-size: 18pt;">STlink接口，传感器及其扩展</span></strong></p> <p><strong><span style="font-size: 18pt;"><img src="//image.lceda.cn/oshwhub/b08c11c2641e43b2886d697803eeb13e.png" alt="" width="282" height="555" /></span></strong></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;">传感器这里直接使用的本次大赛提供的SHT40模块，需要注意的一点，此模块并没有设置任何防反接措施，带电反接可导致传感器损毁，请注意接线顺序，串口屏接口未标注线序，使用串口屏时请注意。</h3> <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;"><em>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="font-size: 12pt;"><strong>代码直接使用案例代码，可自行修改，串口屏代码由于个人时间问题未实装，考虑在后续版本中加上</strong></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;">&nbsp;</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;">&nbsp;</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;">&nbsp;</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;"></em>6、大赛LOGO验证</h3> <hr class="horizontal-splitline normal-bold-2" /> <p style="line-height: 1.8;"><img src="//image.lceda.cn/oshwhub/a21295a81bb6443c9a6a76966d55d7f4.jpg" alt="" width="1383" height="1014" /></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/oshwhub/3ca12756d66945b7ad8b771fbe3e1fa2.jpg" alt="" width="1353" height="1003" /></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> <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;">&nbsp;</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;">&nbsp;</p> </div></p>