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DLP4500官方资料问题

Other Parts Discussed in Thread: DLP4500, TIDA-00293

在官方的DLP4500配套的3D打印机资料中有以下问题
1:官方的TIDA-00293 DLP 3D Printer System Schematic文件中有如图1的一个连接关系,有个3D Printet Level transtar 的J3与BeagleBone MSTP Cape的J8 之间的J3有这接,可是看官方的BeagleBone MSTP Cape所提供的开发资料中,PCB板里的J8一个连接线都没有(如图2所示),是不是官方提供的资料不对呢?

图1 DLP 3D Printer System Schematic的截图

图2 BeagleBone MSTP Cape的PCB板截图