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https://github.com/mackieks/fujiflex

GCVideo DVI flex PCB for Nintendo Wii
https://github.com/mackieks/fujiflex

dvi gcvideo nintendo-wii wii

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GCVideo DVI flex PCB for Nintendo Wii

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README 

        
    



OSHW GCVideo DVI flex for Nintendo Wii. Tested and working! Solderpad Hardware License v2.1






Special thanks to [loopj](https://github.com/loopj) for testing the FPC and writing the assembly+install documentation!



## fujiflex features

- [x] Compact 28 x 30mm 2-layer flex PCB (requires KiCAD 8.0 or later)

- [x] ~$10 BOM cost

- [x] Powered from 3.3V and 1.8V (1.2V generated from 1.8V)

- [x] 19-pin Molex 5052781933 / 5052781970 ZIF for HDMI output

- [x] Wii SDA and SCL testpoints

- [x] MODE solder jumper

- [x] Powered by [Ingo Korb's](https://github.com/ikorb) [GCVideo DVI](https://github.com/ikorb/gcvideo/)






## Ordering & Assembly

- Download the latest gerber ZIP from [the gerbers folder](https://github.com/mackieks/fujiflex/tree/main/Gerbers).

- Order design as a 2-layer flexible PCB from JLCPCB, PCBWay, GoldPhoenix, or OSHPark.

- **MANDATORY:** FPC must use at least **0.5oz/in² copper** 

- If ordering from JLCPCB, you **must** select **0.12mm thickness** to get 0.5oz!

- A steel solderpaste stencil with etching or electropolishing is **highly** recommended for assembly. JLCPCB is a good source.



I maintain [a Mouser project](https://www.mouser.com/ProjectManager/ProjectDetail.aspx?AccessID=5589d512f3) with most of the BOM. You still need to source the FPGA from elsewhere. I suggest either [LCSC](https://www.lcsc.com/product-detail/Programmable-Logic-Device-CPLDs-FPGAs_XILINX-XC3S200A-4VQG100C_C1521645.html), [AliExpress](https://www.aliexpress.us/item/3256805017536134.html), or [Taobao](https://item.taobao.com/item.htm?abbucket=5&id=749261010737&ns=1&spm=a21n57.1.0.0.2b93523ch7BSfI).



The total BOM cost for fujiflex is around 10USD. **If you're paying more than $5 per FPGA, you are being ripped off!**



Use the provided [ibom.html](https://github.com/mackieks/fujiflex/blob/main/ibom.html) to guide part placement.



**Note:** If you intend to program the SPI flash in-system, do not place R6. You will need to place it after programming is complete.



## Flashing GCVideo



Once assembled, you'll need to flash the GCVideo bitstream. The cheap 'n' easy approach is to program *in-system* using a SPI flash programmer (EZP20xx, CH341A-based, RPi Pico) soldered to the testpads on fujiflex.



- Remove R6 to avoid powering the FPGA during programming

- Wire the CS, MISO, MOSI, CLK, and GND pads to the corresponding pins on your SPI flash programmer

- Wire the rightmost pad of R6 to 3.3V on your SPI flash programmer

- Download the *shuriken-v3-wii* bitstream from [GCVideo's latest release](https://github.com/ikorb/gcvideo/releases/latest)

- Write the bitstream (eg. `gcvideo-dvi-shuriken-v3-wii-3.1-spirom-complete.bin`) to the SPI flash (see below)

- Populate R6 (0402 0Ω)



![fujiflex pads](images/fujiflex_pads.png)



### EZP20xx programmers



If you are using an EZP20xx programmer, you can flash the bitstream using the [Windows software](https://www.chipsetpro.com/en/content/7-download-software) for these devices.



### Other programmers (using `flashrom`)



For other programmers, [flashrom](https://flashrom.org) is an open source command line tool for programming flash chips which supports [tons of devices](https://wiki.flashrom.org/Supported_programmers), including the inexpensive CH341A-based boards.



First expand the GCVideo bitstream to match the size of the SPI flash chip:



```sh

fallocate -l 512k gcvideo-dvi-shuriken-v3-wii-3.1-spirom-complete.bin

````



Then flash the bitstream, for example with a CH341A programmer:



```sh

flashrom --programmer ch341a_spi -w gcvideo-dvi-shuriken-v3-wii-3.1-spirom-complete.bin

```



### Socket adapters



You can also use a DFN8 2x3mm socket to program the SPI flash before soldering it to the board. [Type 1](https://www.aliexpress.us/item/3256802266989931.html), [Type 2](https://www.aliexpress.us/item/3256801780444965.html)



## Installation



fujiflex is soldered directly to the [digital A/V vias](https://github.com/ikorb/gcvideo/blob/main/HDL/gcvideo_dvi/README-Wii.md#digital-audio-and-video) on a 4-layer Wii motherboard.



- Align and solder fujiflex to the GPU vias

- Wire the 1.8V, 3.3V, 5V, and GND pads

- To use a Gamecube controller for navigating the GCVideo OSD, you'll also need to [wire the GCC pad](https://github.com/ikorb/gcvideo/blob/main/HDL/gcvideo_dvi/README-Wii.md#controller) (or [via](https://bitbuilt.net/forums/index.php?threads/the-definitive-wii-trimming-guide.198/#:~:text=GameCube%20controllers%E2%80%8B,GameCube%20controllers)).



Install by [loopj](https://github.com/loopj):






## License



Solderpad Hardware License v2.1