200813-Output files for T-Board (v3.1)

20200813: Layout for T-Board (v3.1) are improved and updated. 

Modification:  1.remove the jumper (J1). 2.move the large capacitance (C5 & C7) to the other layer. 3.add two ground holes (W30 & W31) with 0.7 mm diameter. 4.improve the routing near the fixed holes of Nicomatic connectors. 

Reason: based on the experience of the prototype assembly  

Status: The layout for v3.1 T-Board is improved and updated.
             
             The latest output files included schematic, assembly drawings, CAD, BOM, and gerber files can be found in the attachment.