USB mini female to mini female cable

I'm trying to make a 'usb mini female to usb mini female' interfacing cable for a project I am working on. It has to go between a Arduino Nano and a mini usb bulkhead.
The bulkhead part has usb mini male on both sides. I thought one was female....doh.

I first soldered all 5 pins straight through and had both connectors the same...didn't work. Then I thought maybe pin 4 was not supposed to be connected, so I unsoldered it on one end...didn't work.
Then I thought I got the wrong 'pin 4' ( got male and female pinouts mixed up) so I re-soldered the first wire back on and disconnected the new 'pin 4'...didn't work.

Have Googled to see if I can find a wiring diagram but cannot find exactly my situation.

Anybody know what I'm doing wrong?

I didn't think I would have to swap D+ and D- wires at one end, but is that my mistake?

I don't want to keep on desoldering and soldering wires until i get it right, as the connectors are very small and the heat will eventually damage them ( although I have a very small tip, and Mag lamp...)so they will not be fit for use.

Steve
Attachment 431824

For this to work, the TX of the Arduino has to be connected to the RX of the bulkhead (assuming the bulkhead is a device). The RX of the arduino goes to the TX of the bulkhead.
GND to GND and +5V to +5V. You only need these 4 wires.
It is the same as if you would connect the arduino to a USB to Serial adapter or any other serial device.

Hi hfjbusis, Thanks for the conment.
I don't think the bulkhead is a 'device'....it is just a way of interfacing usb through an enclosure.
I dentified power and ground on my lead and swapped Tx and Rx to see what would happen and it still doesn't work.
The Arduino has the power led lit so I assume polarity is correct.
If 2 wires are correct, there are only 2 possible options and 1 must work , right....lol....no....
I must be missing something...

Pic of whole setup:
Attachment 431856

USB doesn't have TX and RX; it has D+ and D- lines. It's a differential bi-directional data link.

https://en.wikipedia.org/wiki/USB
https://en.wikipedia.org/wiki/USB_hardware

Yes, I know...I thought it was a 'terminology' thing.

Sorted it out. I am used to using 'male' and female' for IDing conectors. The standard is "Receptacle' and 'plug'
I had disconnected the wrong 'pin 4'.......

Great that its working and that you have figured it out yourself.

Quote:

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Originally Posted by __Britt

USB doesn't have TX and RX; it has D+ and D- lines. It's a differential bi-directional data link.

https://en.wikipedia.org/wiki/USB
https://en.wikipedia.org/wiki/USB_hardware

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@__Britt
You are right, wrong answer.

@Sterob
I use these kind of cables for my enclosures. The thick female end is pressed/clamped into a square hole in the enclosure
https://www.ebay.nl/itm/USB-2-0-A-Fe...QAAOxyyrRR9yol

Quote:

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Originally Posted by hfjbuis

@Sterob
I use these kind of cables for my enclosures. The thick female end is pressed/clamped into a square hole in the enclosure
https://www.ebay.nl/itm/USB-2-0-A-Fe...QAAOxyyrRR9yol

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thanks.
I used this as I didn't have a lot of room and it was *supposed* to plug straight in...lol

https://au.rs-online.com/web/p/mini-...ctors/1116757/