描述
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<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>
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<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;"><strong>便携温湿度检测仪,使用</strong></span><strong style="color: #95a5a6;">stm32g030k6t6主控来采集</strong><strong style="color: #95a5a6;">盛思锐SHT40温湿度传感器数据,显示到两个3位数码管上。项目工程包含3D外壳文件,和面板文件,电池使用一块703048的开电池,测试安装正常。整个工程均使用嘉立创EDA专业版设计,除锂电池外,PCB,元器件,3D打印外壳,面板都可以在嘉立创下单。</strong></p>
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<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>
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<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;">项目首次公开,是原创。</p>
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<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>
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<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;">本项目遵循GPL3.0开源协议。</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;"></em>4、硬件部分</h3>
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<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;">硬件部分,主控使用STM32G030K6T6,传感器使用盛思锐SHT40,两个3位数码管通过3片SN74HC595PWR移位寄存器驱动.di电源部分,使用锂电池供电,由于锂电池电压较高,使用了一个超低压差线性稳压器(TPS7A0333DBVR),将电压稳定在3.3V.注意原理图中使用的是TPS7A0328DBVR,是因为立创没有现成的333的元件,328和333封装是一样的,买元件买333就行了。<img src="//image.lceda.cn/oshwhub/f6759960cf644de3b638a1b4f9fdc8bc.png" alt="" width="216" height="169" /></span></p>
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<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;">锂电池的充电使用MCP73831T-2ACI/OT,可提供最大500mA的充电电流。考虑到现在很多充电器是C口的,直接充的话,充电器并不会有任何电压输出,比如下面这两个:<img src="//image.lceda.cn/oshwhub/84a529702d8b465d8b6bbd1f02531996.jpg" alt="" width="115" height="193" /></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;">这里,我使用了一颗HUSB238_002DD来诱骗充电器,让充电器输出一个5v电压。原理图中详细标识了,通过修改配置电阻R12和R13来控制充电器的输出电压电流。但本项目中,这两个电阻直接短路即可,通电前仔细检查,不能空置,也不能按原理图装10欧的电阻,不然直接烧主板。。。。。最后经实物验证,全部电路工作正常。</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>5、软件部分</h3>
<hr class="horizontal-splitline normal-bold-2" />软件部分,可自己使用立创训练营官方,给的程序烧录即可。也可以自行设计,比如按键改为休眠和唤醒,按一次休眠,再按一次唤醒,数码管常亮实时显示温湿度。还有两个指示灯和DAC电池电量检测没用上,可以用来为电池低电量报警。嗯,我这里,训练营快结束了,我就先提交了。。。。。哈哈。。。。这些功能应该会后面补上吧。。。。。。
<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、BOM清单</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;">*7、大赛LOGO验证</h3>
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