<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;">* 1、项目功能介绍</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;">简单的音频功放设计，有音量加减控制按键。</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 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;">基于立创训练营教程的个人第一次DIY功放实验练习</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> <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;">*4、硬件部分</h3> <hr class="horizontal-splitline normal-bold-2"> <div> <p style="font-size: .94em; font-family: Arial; text-align: justify; margin: 0px; letter-spacing: 1px; line-height: 1.75em; padding: 0em .4em 0em 0em;">音频主控是PAM8407，也是视频教学推荐的，是一款无滤波器D类放大器，具有高信噪比和差分输入，有助于消除噪声。允许扬声器音量控制。PAM8407支持2.5V至6V工作电压，输出采用无滤波器架构，简单且低成本。PAM8407内置自动恢复SCP(短路保护)和热关断。</p> <p style="font-size: .94em; font-family: Arial; text-align: justify; margin: 0px; letter-spacing: 1px; line-height: 1.75em; padding: 0em .4em 0em 0em;">喇叭是福声科技FS4014-8-2W。</p> <p style="font-size: .94em; font-family: Arial; text-align: justify; margin: 0px; letter-spacing: 1px; line-height: 1.75em; padding: 0em .4em 0em 0em;">原来设置的DC5v电源供电，由于开关过线错误导致无法使用，在打另一块板子作改进但还没到货，所以实物验证方案一采用现成的电源模块是DC 5v。后来DC电源输入口重新打了板子就可以用了，开关由于材料被我省掉了。用连锡飞线等方法疏通了电路。右上角的针脚是重启（关断）功能，由于也没有开关，用杜邦线连接GND用拔插的方法完成关断重启。</p> <p style="font-size: .94em; font-family: Arial; text-align: justify; margin: 0px; letter-spacing: 1px; line-height: 1.75em; padding: 0em .4em 0em 0em;"> </p> </div> <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;">部分基础元件我有现存就没有购买了<img src="//image.lceda.cn/pullimage/ie4vIMuZh39OaA29tJnawm37XJRyROrlH2DWej0g.png" alt="bom" width="1138" height="594"></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、项目logo图片</h3> <p><img src="//image.lceda.cn/pullimage/jPRd9LbndboDCr14nuDiHm3O2azBaIVsCw9RrbTy.png" alt="jPRd9LbndboDCr14nuDiHm3O2azBaIVsCw9RrbTy.png" width="707" height="646"><img src="//image.lceda.cn/pullimage/Foc9UoDZoCvZxKhGHUQcA0nmX0M62BtI5o82iI6e.jpeg" alt="" width="823" height="1097"></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;">实物验证1是电源输入口因为电源输入出了点问题所以用了一个现成的模块做的备用电源做，实物验证2在立创重新打了紫色的重新画了电源输入口，但是开关不够了就选择飞线过去了。播放功能，音量+-功能，关断重启功能验证成功。</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>