584,837 active members*
4,941 visitors online*
Register for free
Login
Results 1 to 9 of 9
  1. #1
    Join Date
    Jan 2007
    Posts
    626

    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

  2. #2
    Join Date
    Mar 2015
    Posts
    409

    Re: USB mini female to mini female cable

    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.

  3. #3
    Join Date
    Jan 2007
    Posts
    626

    Re: USB mini female to mini female cable

    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

  4. #4
    Join Date
    Aug 2009
    Posts
    230

    Re: USB mini female to mini female cable

    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

  5. #5
    Join Date
    Jan 2007
    Posts
    626

    Re: USB mini female to mini female cable

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

  6. #6
    Join Date
    Jan 2007
    Posts
    626

    Re: USB mini female to mini female cable

    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'.......

  7. #7
    Join Date
    Mar 2015
    Posts
    409

    Re: USB mini female to mini female cable

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

  8. #8
    Join Date
    Mar 2015
    Posts
    409

    Re: USB mini female to mini female cable

    Quote Originally Posted by __Britt View Post
    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
    @__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

  9. #9
    Join Date
    Jan 2007
    Posts
    626

    Re: USB mini female to mini female cable

    Quote Originally Posted by hfjbuis View Post


    @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
    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/

Similar Threads

  1. Female MDF mold finish
    By marcinito in forum Vacuum forming, Thermoforming etc
    Replies: 5
    Last Post: 04-08-2022, 11:43 AM
  2. DB9 Male and Female Connectors
    By kolias in forum CNC Machine Related Electronics
    Replies: 4
    Last Post: 01-19-2017, 04:38 PM
  3. Thread Mill Female 1 1/2 NPT
    By VanDickie in forum GibbsCAM
    Replies: 3
    Last Post: 03-21-2013, 12:35 AM
  4. Female mould milling
    By pupetxls in forum Vectric
    Replies: 3
    Last Post: 02-26-2012, 10:09 PM
  5. male and female molds
    By pyroracing85 in forum Moldmaking
    Replies: 10
    Last Post: 02-21-2005, 06:40 PM

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •