Tuesday, March 16, 2021

USB and RJ45 wiring for Brook Universal Fight Board

I'm in a joystick-building mood again and I found out very quickly that anything other than a proper Neutrik RJ45 connection sucks.

The problem: The Brook Universal Fight Board uses a USB Type-B connection, which obviously isn't RJ45. But a Brook UFB with headers also has the headers for another type of USB connection if you so desire.

The solution: Order a bag of Cat 6 RJ45 ethernet cables, verify the colors, and learn how to crimp Dupont connectors using this crimp tool and this tutorial. (This tutorial is for putting on the Neutrik)

According to Toodles (assuming RJ45 clip on bottom):

RJ45 pin 1 = black - ground (USB) = orange/white stripe (T568B RJ45)

RJ45 pin 5 = white - D- (USB) = blue/white stripe (T568B RJ45)

RJ45 pin 6 = green - D+ (USB) = green (T568B RJ45)

RJ45 pin 8 = red - VCC (USB) = brown (T568B RJ45)

So left to right on a Brook UFB is this: 

  1. G (orange/white stripe)
  2. D+ (green)
  3. D- (blue/white stripe)
  4. VCC (brown)
This means the wires you can safely cut/eliminate are:
  • green/white stripe
  • brown/white stripe
  • blue
  • orange
The alternative is to actually use the USB connection, cut the end of the cable, and crimp on an RJ45 to that. You would only need to cut (and not even strip) four wires, and this is indeed how you would make cables for other systems with a multi-console board. But I think using an RJ45 cable in the first place is easier, not to mention cheaper.

Monday, March 15, 2021

Asagiri Gen-isms

We're all watching Dr. Stone on Crunchyroll, right? Good.


Took me a while to realize these were just backwards Japanese words...

りむ

じま

ばいや

ごいす

どいひ