unity报错Certificate Assets\WSATestCertificate.pfx is expired and cannot be used for a UWP build

Posted inHoloLens, Unity

unity打包报错，目标文件夹是空的，报错代码如下：
InvalidOperationException: Certificate Assets\WSATestCertificate.pfx is expired and cannot be used for a UWP build. To fix this, either delete it or select a different certificate in the player settings.
PostProcessWinRT.CreateTestCertificate () (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:1078)
PostProcessWinRT.Process () (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/PostProcessWinRT.cs:168)
UnityEditor.UWP.BuildPostprocessor.PostProcess (UnityEditor.Modules.BuildPostProcessArgs args) (at C:/buildslave/unity/build/PlatformDependent/MetroPlayer/Extensions/Managed/ExtensionModule.cs:86)
Rethrow as BuildFailedException: Exception of type ‘UnityEditor.Build.BuildFailedException’ was thrown.

分析以后应该是这个项目的WSA证书过期了。解决办法：

hololens2实现5G模块有线连接

Posted inHoloLens, Unity

众所周知原版hololens是没有5G模块的，它使用的芯片是高通骁龙850，高通骁龙850实际上是不具备5G基带的，当年也需要外挂X50基带才可以实现5G，更别说hololens2设计的时候可能原生就没有5G基带。后面有说要推出5G版本hololens，但最后还是鸽没了。
所以Hololens2如果想要实现户外功能就必须要自己加装5G模块，
于是博主斥巨资购入ZTE中兴 F50 5G上网模块（399元），这个好处是可以插入自己的5G SIM卡，切换自由。这款5G module的USB接口是typec usb3.0的，配合USB3.0+的数据线可以实现3750mb/s的数据传输，也就是3.7G左右的接口传输速率。

关于苹果vision pro测评的一点观后感

Posted inVR AR MR

 

看了看最新解禁的apple vison pro的测评视频，和苹果宣传的差别其实还蛮大的。整体来看还是不够成熟的产品，3499美元及其昂贵的价格，两小时多的续航，低像素主摄不良的拍照体验，重量高导致长时间佩戴不适，外屏幕鸡肋且反光，暗光环境下导致模糊与延迟严重，最严重的是VR HMD系统现有的可视角度和屏幕及渲染问题。

但是也有优点，强大的空间计算能力，比如之前其他公司没有做到的与其生态系统的设备无缝流转，一些很舒服的交互动效，震撼的电影效果，大量生产力软件等等。可是对比缺点确实不适合普通人购买。

科技不是魔法，总之人们距离真正实现无缝虚实结合还有很长的路要走。

PICO4充电灯不亮开机键无反应怎么办

Posted inVR AR MR, 硬件测评
主要问题：插上充电器后，Pico4充电指示灯不亮灯，而且按下开机键没有任何反应。 导致该问题的原因：Pico4吃灰久了，长时间过放电导致电池锁死或者机器系统锁死…… 解决办法：插入原装充电器的情况下，长按十秒开机键，对设备进行重置。如果设备开始闪烁红灯，代表重置成功，但是此时依然无法开机，此时代表电……

[unity] implementation after clicking a button, delay and switch the background image/interface

Posted inUnity

There might be a better way, but so far I’ve found that you can do this, and you can try other ways.

 

Goal: In UNITY, after clicking a button, three screens (or Raw images) appear in sequence: the first screen appears 1 second later, the second screen appears 3 seconds later and the first screen disappears, and the third screen appears 3 seconds later and the second screen disappears. The first step is to create a C# script in Assets, let’s name it delaydisplay3, double-click visual studio to open the edit.