7寸液晶屏价格
作者:正版王小帅
事情要从这块7寸液晶屏内幕说起……
\n无意捡到了一块7寸液晶显示屏,型号是AT070TN92,查了下资料,是奇美 (Chimei Innolux)出品的,分辨率800*480,可惜就是不带触摸。
\n这款屏幕使用的是50pin的连接线,可以从万能的某猫上找到配套的触摸屏,价格也不算贵,有兴趣也可以买一个玩玩。
\n有段时间因为总跑机房调设备,机房又经常没有显示器,所以就想着,正好用这块屏做一个便携显示器。
\n除了显示屏,还需要一块驱动板,才能正常使用。我买的这块板不带音频,感觉没啥用,不过现在有点后悔,如果重新再做一个话,一定要加上触摸屏和喇叭。
\n来个全家福,总共需要一块驱动板,一根转接屏线,一块按键板,按键板和控制板的连接线,还有一个电源接头。
\n按键板有电源、菜单、加减和选择信号源这几个按键。
\n这块控制板用的是螃蟹的RID2660H芯片,说起来这块芯片还是挺强大的,支持内置音频处理器同时支持全高清分辨率,用这里有点大材小用的感觉。
\n先测试下效果,接在我的电脑上当副屏,一切正常。
\n这块控制板使用的是5V电源,这样一来,我就可以用移动电源供电了,也省得每次还要带电源插头,很麻烦。然后我又一想,既然可以用移动电源供电,那何不干脆集成一个移动电源进去,这样岂不是又可以给显示屏供电,又可以当移动电源使用。
\n说干就干,先找来了三块5000mah的聚合物电池,虽说不大,但是也足够应急用了。
\n电池要买带保护板的,这样不会过充过放电。
\n又拆了一个坏充电宝,虽然电池废了,充电板还是好的。
\n就是这个小板。
\n测试了一下,充放电正常。
\n本来还考虑个带无线充的方案,怎奈外壳用的亚克力太厚了,无线充不起作用了只好放弃了这个方案。
\n因为控制板支持两路电源输入,所以又顺手改了这个4pin的插头。
\n找了一对电线,准备加进去。
\n加好以后的状态,这样一组电源线直接接在充电宝上,通过充电宝供电。另一组电源则引一个外接电源的插座,也可以使用外接电源供电。
\n偷了个懒,直接把充电宝的一个接口甩在了内部,然后把一组电源输入接了个USB的公头,这样直接插上就好了。
\n当然,必要的绝缘处理还是要做的。
\n这是我最后选用的充电板,一个USB母头直接接刚才的USB公头供电,再加一个开关可以切断电源。另一个USB母头留在外面,可以给其他设备充电使用。
\n亚克力做了个外壳,用了最简单的办法,直接粘。修剪出充电宝接口的位置。
\n最右边的开关是控制充电宝开启的,中间的是microusb的显示器控制板供电口(后来换成了type c的),右边则是连接显示屏控制板和充电板的开关。最右边是充电宝的外接USA插口,其他设备可以通过这个USB口取电。
\n中间的夹层用来放电池,但是没有考虑到走线的问题,导致最终只放下了两块电芯。
\n最下面则是控制板,HDMI口被放到了最上面。后来考虑了一下,其实应该在侧面效果更好,第一次做比较没经验。
\n这个是改TYPE-C口后的照片,外壳因为当初考虑无线充电以及放三块电芯,做的略微有点臃肿了。
\n外壳是一块一块的亚克力板,直接用三氯甲烷粘接,最后就成了个小方盒。
\n不过总体来说也还不错,起码该有的功能都有了。
\n测试下充电功能,完全正常,给手机充电杠杠的。
\n再测试下开机,也没问题,通电正常。
\nHDMI连接小米盒子感受下。
\n嗯,追剧看电影也可以,就是美中不足需要额外连接音响或者耳机(需要HDMI转换口)。
\n至此本次DIY算是完全成功。
\n液晶屏免费,充电板拆旧,控制板套装60,电芯10块,接口开关电线等辅料5块,亚克力外壳15,总共花费90元。理论上现在买个二手的便携屏也就是100左右,不过自己做的乐趣更多,而且自带电源,用起来更方便。
\n其实手里还有几块屏,过些日子打算再做个升级版的,把尺寸精简一下,顺便加上无线充电,还有音箱和触屏也必须安排上。
\n敬请期待。
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