Flying Stone GETA-083 (Get A-grade)! Version 0.0 2016-06-?? Niibe Yutaka Flying Stone Technology What's this? ============ GETA is a Japanese footware. This is a part which is intended to put under a PCB of 1.6mm thickness, so that the PCB can be fit into the USB-A receptacle. I design this for FS-BB48. I designed FST-01 (Flying Stone Tiny ZERO-ONE) in 2011. Then, I manufactured the product. Soon after that, I found that FST-01 is a something like a course name for computer science in India. If it were a course name, I'd say, "Get A-grade"!. In ASCII art ============ I assume that the thickness of each layer is 0.2mm. But it could be changed thinner or thicker. It depends. This is the figure. ___________________ copper ------------------------------------------... | | | | | | 1.6mm PCB | | | | | | ------------------------------------------... | 0.2mm layer 1 | ------------------------ | 0.2mm layer 2 | ------------------------ | 0.2mm layer 3 | ------------------------ (1) Layer 1 <---- 11.75mm --------> ^ +---------------------+ | | | | | | | | | 12.0mm | | | | | | | | | | | | | | | | | | | | | v +---------------------+ Purpose of Layer 1 is to match the thickness of 1.84mm of USB device board. (2) Layer 2 <---- 11.75mm --------> ^ +---------------------+ | | | | | +--+ | ^ | | | | | | 2.5mm 12.0mm | | +--+ | v | | | | | | | | +--+ | | | | | | | | +--+ | | | | v +---------------------+ <--5.16mm-> <--> 2.0mm Purpose of Layer 2 is to have a hole. (Standard USB-A Plug use metal for this and the thickness is 0.15mm.) (3) Layer 3 <---- 11.75mm --------> ^ +---------------------+ ^ | | | | 2.0mm | +-------------+ | v | | | 12.0mm | +-------------+ | ^ | | | | 3.0mm | | | | | +-------------+ | v | | | | +-------------+ | ^ | | | | 2.0mm v +---------------------+ v <---7.16mm----> Purpose of Layer 3 is to support the USB device in the receptacle. This is important for FS-BB48, where we assume touching the board for the button. License ======= This document and the design file is distributed under GPLv3 (or later). Please see COPYING. I don't think the generated material based on the design will be covered by copyright, but if you care, I don't ask you to deliver the text of GPLv3 along with the physical material. --