Forum Rule: Always post complete source code & details to reproduce any issue!
Results 1 to 19 of 19

Thread: TEENSY 4.1 with 4.0 AUDIO CARD pins

  1. #1

    TEENSY 4.1 with 4.0 AUDIO CARD pins

    I tried to send a pic of how I have pinned the Teensy 4.1 and Audio board 4.0 but it did not go thru. I am having difficulty getting the two to mate up. On the Teensy 4.1 board the Pins are on the bottom so that the Teensy can be pushed onto a breadboard. The Audio board 4.0 has pins female headers on top, so that the Teensy connects to it. But I cannot external wires to connect to both. I would really need some help here and would greatly appreciate it.

    Sincerely,

    soky157

  2. #2
    Senior Member+ defragster's Avatar
    Join Date
    Feb 2015
    Posts
    15,543
    Always a puzzle to decide on connecting ... top or bottom ... double stack or female headers on one end ...

    This page shows the pins used for the different elements - minor diff T_3.x .vs. T_4.x shown: teensy3_audio.html

    Photos ( jpg or png ) are limited to about 1MB - perhaps the image at hand was over that limit and it gets rejected without useful comment

  3. #3
    Senior Member
    Join Date
    Jul 2020
    Posts
    1,460
    I built an adapter using stacking headers and stripboard to solve this problem for my T4.0 - in retrospect I
    should have populated either the Audio adapter or Teensy itself with stacking headers.
    Click image for larger version. 

Name:	teensy_adapter_top.jpg 
Views:	15 
Size:	95.1 KB 
ID:	26682
    Click image for larger version. 

Name:	teensy_adapter_bot.jpg 
Views:	16 
Size:	154.8 KB 
ID:	26683

  4. #4
    Senior Member
    Join Date
    Nov 2012
    Posts
    1,811
    If you don't want to desolder the sockets on the audio board (I would hate to have to do that!), I think I would put the T4.1 on the breadboard and wire the audio board to the breadboard. You would have to make the wires as short as possible sticking one end into the female header on the audio board and the other end into the breadboard. If you are only using the audio (not the SD card and memory chip) you can just wire up 7 pins plus power and ground. See the pinout table near the top of this page.
    Failing that you'd probably have to buy a new audio board (PJRC has a Black Friday Sale on them) and some female headers with the long pins.

    Pete

  5. #5
    Pete, thank very much really, for helping me with this. I will try suggestions and see how they work. Have a wonderful Holiday!

    soky157

  6. #6
    I meant to thank everyone who replied to my text. Thank you all!

    soky157

  7. #7
    Hello Pete, Concerning the Audio Board 4.0, are you saying that the Headers or straight pins should be soldered to the bottom of the Audio board and NOT the top?

    soky157

  8. #8
    Senior Member+ defragster's Avatar
    Join Date
    Feb 2015
    Posts
    15,543
    Quote Originally Posted by soky157 View Post
    Hello Pete, Concerning the Audio Board 4.0, are you saying that the Headers or straight pins should be soldered to the bottom of the Audio board and NOT the top?

    soky157
    reading here - since the Audio board has headers just go about : "sticking one end into the female header on the audio board and the other end into the breadboard."
    > as long as the right gauge of solid wire is at hand - that can make decent contact if the wires will be stable once connected.
    -> if the wires won't solidly fit into the header then it might take soldering them to the solder already on the Audio PCB.

  9. #9
    Senior Member
    Join Date
    Nov 2012
    Posts
    1,811
    @soky157 Can you try again to send photos of your T4.1 and audio board? Easiest thing is to use JPG format and make sure they're under the size limit.

    What I usually do is use long-pin female headers on the Teensy so that it can be plugged into a breadboard and have an audio board stacked on top. The audio board then has regular header pins.
    I ran into a wee problem with a T4.1 when I wanted to connect the Ethernet adapter to the board and also put the audio board on top. There isn't enough room for the audio board to sit on the T4.1 when the Ethernet cable is also connected. So I added another stack (not soldered this time) of long-pin female headers to the T4.1 and then plugged the audio board into that. Probably not optimal but it worked

    are you saying that the Headers or straight pins should be soldered to the bottom of the Audio board and NOT the top?
    I don't understand exactly what you're asking here. The regular header pins are soldered on the top of the board. The long-pin female headers would be soldered under the board.

    Pete

  10. #10
    Junior Member
    Join Date
    Nov 2021
    Posts
    5

    Solder question

    Hi, same basic question. I have a 4.1 with an audio shield. I blew up my first 4.1 trying to breadboard-wire these two components together. I bought a new one and thought it wise to ask before I destroy things again. Does this layout look correct? The top audio shield already has soldered pins which I attached to that header directly. I was planning on soldering the underside of the header to the 4.1.

    Click image for larger version. 

Name:	teensy + audio.jpg 
Views:	14 
Size:	73.3 KB 
ID:	26733

    Click image for larger version. 

Name:	teensy + audio2.jpg 
Views:	19 
Size:	60.2 KB 
ID:	26734

    Click image for larger version. 

Name:	teensy + audio1.jpg 
Views:	25 
Size:	103.3 KB 
ID:	26735

  11. #11
    Senior Member
    Join Date
    Apr 2014
    Location
    Germany
    Posts
    9,650
    Quote Originally Posted by andrewnoob View Post
    Hi, same basic question. I have a 4.1 with an audio shield. I blew up my first 4.1 trying to breadboard-wire these two components together. I bought a new one and thought it wise to ask before I destroy things again. Does this layout look correct? The top audio shield already has soldered pins which I attached to that header directly. I was planning on soldering the underside of the header to the 4.1.

    Click image for larger version. 

Name:	teensy + audio.jpg 
Views:	14 
Size:	73.3 KB 
ID:	26733

    Click image for larger version. 

Name:	teensy + audio2.jpg 
Views:	19 
Size:	60.2 KB 
ID:	26734

    Click image for larger version. 

Name:	teensy + audio1.jpg 
Views:	25 
Size:	103.3 KB 
ID:	26735
    Nope... the pins are printed on the bottom of the shield..


    They correspond to the Teensy pins..

    Paul should probably post a photo how it should look like..

  12. #12
    Junior Member
    Join Date
    Nov 2021
    Posts
    5
    Thanks, I have the GND->12 and 5V->13 pins aligned between the Teensy and the Audio Shield. I thought they could be stacked either top or bottom. What am I missing?

  13. #13
    Senior Member
    Join Date
    Apr 2014
    Location
    Germany
    Posts
    9,650
    Just align the pin 0 to the corresponding Teensy 0-pin. Yes, they can stack...

  14. #14
    Junior Member
    Join Date
    Nov 2021
    Posts
    5
    The respective pin 0s align since I have it from GND->12 and 5V->13, respectively. Assuming that's correct, it's ok to solder what I have shown together? Sorry for the many questions. I am new to this.

  15. #15
    Senior Member
    Join Date
    Apr 2014
    Location
    Germany
    Posts
    9,650
    Post a photo

  16. #16
    Junior Member
    Join Date
    Nov 2021
    Posts
    5
    I did, see previous post (#10).

  17. #17
    Senior Member
    Join Date
    Apr 2014
    Location
    Germany
    Posts
    9,650
    Oops.. do not see any photos. Hm? Ok, maybe a forum or other problem.
    If these pins are aligned, everything should be ok.

  18. #18
    Senior Member houtson's Avatar
    Join Date
    Aug 2015
    Location
    Scotland
    Posts
    215
    Hi - in this picture you are one row out - don't solder them up like this.

    you need to align the first row of pins on the teensy with the first row of pins on the shield
    cheers paul

    Quote Originally Posted by andrewnoob View Post

    Click image for larger version. 

Name:	teensy + audio1.jpg 
Views:	25 
Size:	103.3 KB 
ID:	26735

  19. #19
    Junior Member
    Join Date
    Nov 2021
    Posts
    5
    Yikes. I have them properly aligned now but I clearly wasn't being careful when I took that photo! Thanks all.

Posting Permissions

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