Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 15 of 15

Thread: Alternativ PCB connectors...somehow

  1. #1

    Alternativ PCB connectors...somehow

    Hi,

    (I am no native speaker of the English Language. I may mess up my sentences...)

    Yesterday I received my brand new Teensy 3.6 and I generated a lot of prime numbers with it as a first check/fun "project".
    Currently I am using the Arduino IDE on GENTOO Linux.

    No headers are soldered to my Teensy 3.6 currently.
    I dont like headers that much (and...how is the counterpart named..."anti-headers", "pins", or "male and female headers" ??? )...
    The """problem""" I have with headers is: There are adding a lot of space to a board (and to anything else, which is used the same way),
    which was designed to be small as possible -- for example by adding extra pads to the back side of the PCB.
    I use tiny boost/buck converters of the size of my thumb nail, which size are doubled when using those headers.
    I would use simple wires soldered to the pads of my Teensy 3.6. - but this would stop its interchangebility between different projects to try.
    Currently I cannot afford being a new Teensy 3.6 for each project, which I am interested in.

    To cut a long story short:
    Are additional boards (like the audio board) sold with headers already soldered or not?
    (If already soldered I would be bound to use headers...)

    • Are there any alternatives to standard headers, which are not that spacey and can be used instead?

    This alternative should be useable with the audio board at least and should allow for many connect / disconnect cycles
    (as headers).

    For me there is no problem to create a little adapter board, which maps this alternative "header" to a ordinary header setup
    to make my Teensy 3.6 useable on breadboards...

    Thanks for any help in advance!
    Cheers!
    Meino

  2. #2
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    Posts
    20,068
    Quote Originally Posted by mcc View Post
    Are additional boards (like the audio board) sold with headers already soldered or not?
    Generally no, they're not sold that way, at least not for Teensy.

  3. #3
    Senior Member+ defragster's Avatar
    Join Date
    Feb 2015
    Posts
    8,557
    I didn't like growth in size from standard female headers - tried the 'round machine pin' type - they didn't offer reliable connections - as least after a few insertions and removals it seemed.

    AdaFruit does make a low profile female header for standard male pins. It is a perhaps a mm more than half as high - so it saves some height, I found similar on eBay for less cost as well. That saves some height and they seem to connect about as well as standard headers.

    Getting to the under pads is not easy - except when using some of the PCB's with castellated cuts allowing soldering that PCB to the Teensy to extend it's length an bringing out pin holes - it seems there were some for T_3.6 - but a couple were made for T_3.2 for example.

    Long pin female headers - or long male pins might allow attacking boards more closely depending o use case.

  4. #4
    Hi Paul, hi defragster,

    thanks for your replies!

    Since the audio board comes with unsoldered headers I can use alternatives! Yeah!

    I made the same experiences with these machined headers. I think, they are made
    for inserting DIL ICs (does any one remember the good ole days, when electronic parts
    cannot be breathed in and were even able to be /TOUCHED/? ) once or twice, if
    the first broke for some reasons...

    I think I need some help of a native speaker here...
    Previously I searched with startpage and on EBay and Aliexpress with terms like
    "headers" "pcb connector" "board connectors" and such and was bombarded with
    standard headers.
    Often the dimensions were missing and judging the size from photos is....hrmmm...
    not so easy (read:impossible).

    Is there any teminus technicus, which more is describing the kind of "Adafruit headers" more closely?

    Thanks a lot for any help!
    Cheers!
    Meino

  5. #5
    Member
    Join Date
    Mar 2019
    Location
    Bordeaux / France
    Posts
    68
    BTW, what is the part's name of the Line in / Line out connector header to use on the audio board ? I'm struggling to find it in online catalogs because I don't know what to search ...

  6. #6
    Senior Member+ defragster's Avatar
    Join Date
    Feb 2015
    Posts
    8,557
    Here is the adafruit part link : adafruit.com/product/3008 for '36-pin 0.1" Short Female Header - Pack of 5 '

    Ebay shows these that look similar to what I got - 40 pins instead of 36 and a couple bucks cheaper with slow but free shipping: ebay.com/itm/5Pcs-2-54mm-Pitch-40-Pin-Female-Single-Row-Straight-Header-Strip-Short/182205504972

  7. #7
    Senior Member PaulStoffregen's Avatar
    Join Date
    Nov 2012
    Posts
    20,068
    Here's some at Digikey. You'll need to cut away one of the pins before soldering.

    https://www.digikey.com/product-deta...N/1849-1002-ND

    https://www.digikey.com/product-deta...7-PH2-10-UA-ND

    https://www.digikey.com/product-deta.../S2011EC-05-ND

    https://www.digikey.com/product-deta...LF/609-3243-ND

    The 9 pins are meant to be used with "AC97" front panel audio cables used in most PCs. For example:

    https://www.ebay.com/i/382878229094?chn=ps

    Click image for larger version. 

Name:	ac97.jpg 
Views:	5 
Size:	26.7 KB 
ID:	16609

    It's also perfectly fine to use wires or a regular 10 pin "IDC" connector with ribbon cable. But if you have one of those AC97 cables, they're pretty convenient.

  8. #8
    Member
    Join Date
    Mar 2019
    Location
    Bordeaux / France
    Posts
    68
    Thanks a lot !!

  9. #9
    Member propa's Avatar
    Join Date
    Apr 2018
    Location
    UK
    Posts
    93
    Think these may be smaller than the ada ones: https://ebay.us/LvYXEG

  10. #10
    Senior Member+ defragster's Avatar
    Join Date
    Feb 2015
    Posts
    8,557
    Quote Originally Posted by propa View Post
    Think these may be smaller than the ada ones: https://ebay.us/LvYXEG
    Indeed they are wonderfully small - the problem is they are the round machine pin style

  11. #11
    Member
    Join Date
    Mar 2019
    Location
    Bordeaux / France
    Posts
    68
    Quote Originally Posted by defragster View Post
    Indeed they are wonderfully small - the problem is they are the round machine pin style
    What is a round machine pin style ?

  12. #12
    Senior Member+ defragster's Avatar
    Join Date
    Feb 2015
    Posts
    8,557
    Quote Originally Posted by Tactif CIE View Post
    What is a round machine pin style ?
    Compare the standard male pin legs which are stamped square cornered : https://www.adafruit.com/product/3008

    Versus those pictured in post 8 link above: https://ebay.us/LvYXEG

    Standard male legs for headers are meant to accommodate that squared form - versus the rounded pin

  13. #13
    Senior Member+ MichaelMeissner's Avatar
    Join Date
    Nov 2012
    Location
    Ayer Massachussetts
    Posts
    2,956
    If you are concerned about the height of the headers, you can solder a Teensy 3.2 with right angle headers and use jumper wires to connect the teensy (assuming you have a teensy without headers). Adafruit sells these, but you should be able to find a cheaper supplier local to your country:


    If you want a more permanent setup, you could use something like an Adafruit mini mint tin perma proto and make the permanent connections with wires in the inner rows (this perma-proto has 15 rows of parallel pins, so you would have one leftover row). You would use normal male headers with the plastic spacer underneath the Teensy. And you can solder right angle headers on the outer rows to allow for more connections.


    If you aren't up for soldering, and you have a Teensy with pins attached, you can use a tiny breadboard to hold the Teensy, and use jumper wires on the outer rows. Like with the right angle headers, you can usually find a cheaper board on ebay or at a local supplier.

  14. #14
    Member
    Join Date
    Mar 2019
    Location
    Bordeaux / France
    Posts
    68
    Quote Originally Posted by defragster View Post
    Standard male legs for headers are meant to accommodate that squared form - versus the rounded pin
    Thanks ! That's good to know !

  15. #15
    Hi Michael,

    thanks for your extensive header science ! :)

    I wanted to save space in the absolute sense ... not only in height (hopefully this is not too germenglishly spoken...
    This neat little board is designed with (beside other things of course) "save space" in mind...I dont want to waste this
    effort by "polluting" it with header of 8.5mm height (or width).

    I have some header (female) in the height of 4.3mm for my Raspi Zero W...but they are too short.
    I tried to find tyhose on aliexpress and found some...but with 1.27mm spaceing...

    Those (4.3mm height) were neat ... sometimes they are called "sockets" instead of "headers".
    I want to use female headers...I dont feel that comfortable to have rows of not insolated "needles"
    on my board which cry "ZAP me! ZAP me! Static electricity, come over me!"

    Cheers!
    Meino

Posting Permissions

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