[teamyamaha91]

I have been looking around and can not find anyone who has got a normal usb to serial adapter to work with the JB4 so why not do it myself.

I have found that only 3 pins are used on the serial port, and i already know where 2 of them go (RX and TX). I cannot figure out with only a JB4 though what needs to go to serial pin 9 or pin 22 on the chip in the JB4 ( my assumption is GND or 3.3v as it is in I/O pin).



My question is does anyone have a JB4 USB cable they can open and send me a picture of both sides?

If you have a multimeter maybe you can even trace pin 9 on your cable?

I am not the biggest fan of proprietary cables but have no problem buying the $33 cable if i needed it. Since I have the parts to build at least 3 USB to Serial cables in my room it seems like a waste. Hopefully someone can help out and then i will post a guide on assembling an adapter.

[teamyamaha91]

bump

[Chocolate Apocalypse]

I'm about to make my own as well:

http://www.e90post.com/forums/showthread.php?t=641913

[teamyamaha91]

Originally Posted by Chocolate Apocalypse

I'm about to make my own as well:

http://www.e90post.com/forums/showthread.php?t=641913

Thanks for that post I have searched high and low and could not find anything close. Sadly the two pins I was able to trace do not match up with that post.

[Maniac0908]

Does anyone know which wires are which? Im guessing black is ground. But which is tx and rx?

[Chocolate Apocalypse]

Orange is tx, yellow is rx

[Maniac0908]

Thanks