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  1. Maybe a zipped achieve? Or just stick on some...

    Maybe a zipped achieve? Or just stick on some amazon s3 storage?

    Regards
    Russell
  2. That's perfect thank you :) Regards Russell

    That's perfect thank you :)

    Regards
    Russell
  3. Where can we download previous versions of Teensyduino? ie 1.23

    I cant find any links to the previous versions of Teensyduino? Does any one cache them? 1.23 in particular :)

    Regards
    Russell
  4. Can the MK20DX256 be replaced with NXP MK20DX128VFT5

    can you just do a straight swap on these parts?

    Regards
    Russell Pirie
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    I had the exact same issue using a teensy 3.2 and...

    I had the exact same issue using a teensy 3.2 and a teensy audio sheild. Im not sure how i did it but some plugging in the audio jack fried the teensy and audio board. It happened twice, i then just...
  6. Not actually a million times but this particular...

    Not actually a million times but this particular board probably about 500 ish times via teensy loader. Yes this board schemetic is identical to the teensy 2.1 schematic with minitan + programming...
  7. has any one ever bricked a teensy through programming it.

    I was programming a teensy (custom board with mini tan) via usb using teensy loader as I have done a million times when it just stops rebooting and get an usb error.

    Now it is literally bricked....
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    Just checking :) as others have made this costly...

    Just checking :) as others have made this costly mistake.
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    Those bootloader chips where from Paul? As blank...

    Those bootloader chips where from Paul? As blank ones will not work! hehe
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    Hehe ill be buying bits and bobs from 3 different...

    Hehe ill be buying bits and bobs from 3 different suppliers soon :D

    Regards
    Russell
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    That octopart figures do not match the actual...

    That octopart figures do not match the actual stock of each site sadly :(

    But farnell are getting quite a few in far sooner then 26 weeks now which is good.

    That is a very nice offer Paul :)
    ...
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    MK20DX256VLH7 out of stock EVERYWHERE??

    Any one know where to get this part in large volumes? Every where i have checked is out of stock with a 26week lead time (mouser,rs,farnell,digikey,futureelectronics etc...)

    Need to make another...
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    Part of the thread does describe sending the hex...

    Part of the thread does describe sending the hex over usb serial via your program code not the boot loader, so can easily be adapted to send the .hex via any method you want :) One massive advantage...
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    Its already been done here :)...

    Its already been done here :)
    https://forum.pjrc.com/threads/29607-Over-the-air-updates

    You can send the .hex via usb serial completely by passing the bootloader!
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    Just reviewing that picture I have the audio...

    Just reviewing that picture I have the audio signals going straight under the crystal which is a massive NO NO. I will move them away from the crystal!
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    PCB audio section layout best practices.

    I have designed a pcb that includes the parts from this kit (but in smd form)
    https://www.pjrc.com/store/pt8211_kit.html

    80% of my pcb is running lamp drivers and various other bits and bobs but...
  17. Yup 100% agree if this board was going to be mass...

    Yup 100% agree if this board was going to be mass produced or used for development or used for some sort of shield etc... But in this case I will be making a one off pcb with absolutely only one spi...
  18. But if its not needed no point having it :) This...

    But if its not needed no point having it :) This board will only have 1 spi device.

    Regards
    Russell
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    This is how I think the teensy pcb kit pt8211 is...

    This is how I think the teensy pcb kit pt8211 is laid out by following the traces (which is slightly different to the datasheet)
    https://www.pjrc.com/store/pt8211_kit.html
    Have i copied this...
  20. That makes sense :) I have removed it. ...

    That makes sense :)
    I have removed it.

    Regards
    Russell
  21. Perfect I will remove the pull up :) Regards...

    Perfect I will remove the pull up :)

    Regards
    Russell
  22. Quick question about the sd card cs 10k pull up on teensy audio board.

    Version one has not got a 10k pull up resistor on the cs sd card line.
    Version two does have this.

    Teensy 3.6 does not have the resistor either.

    Is this 10k pull up required on the sd card cs...
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    Does any one have the schematic for the PT8211...

    Does any one have the schematic for the PT8211 teensy kit?

    Regards
    Russell
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    I did not think unplugging the cable was the...

    I did not think unplugging the cable was the issue but seemed to be what was causing the issue. Must be something else going on. Ill stop using this amplifier for a start and swap to some usb pc...
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    Audio board + teensy 3.2 keeps getting fried!

    I have now fried 2 audio shields and 2 teensy 3.2s and cant quite see what the problem is!
    I am not buying any until i figure this out! hehe.

    My setup

    teensy 3.2 on top of the teensy audio...
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    Is it possible to increase the native serial(usb)...

    Is it possible to increase the native serial(usb) rx buffer size from 64 to say 256? (ie Serial. )

    Regards
    Russell
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    This is my open source version of a little teensy...

    This is my open source version of a little teensy programmer it uses a 2x4 header. (Circuit Maker)

    http://workspace.circuitmaker.com/Projects/Details/russell-pirie/Mini54ProgrammerTeensy

    Use it...
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    Im starting to suspect this as well. I did take...

    Im starting to suspect this as well. I did take one of my 5v 10amp power packs and hook up to a scope and switch on /off multiple times and could not get any spikes out if it. But conditions might...
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    Here is my crystal pcb update 1) grounded the...

    Here is my crystal pcb update
    1) grounded the crystal gnd pads
    2) added in gnd guard ring only connected via pour from inside mk20

    I will use the exact teensy crystal in production runs.
    I will...
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    My board is powered externally via a 5v 10a...

    My board is powered externally via a 5v 10a laptop style power pack.

    What are the signs of an over powered mk20? These ones the regular still works fine and the chip does not get hot. Just does...
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    Ok cool but the one i selected should be ok? ...

    Ok cool but the one i selected should be ok?

    I can only assume the mixture if 10pf crystal without the gnds connected and no guard ring are causing issues?

    Regards
    Russell
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    Only digi key sell that teensy Crystal (very...

    Only digi key sell that teensy Crystal (very expensive for one off component to the uk)

    Would this one be ok for me to test?
    http://uk.rs-online.com/web/p/crystal-units/9047525/

    16mhz 8pf...
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    Ah forgot to mention (might be quite important...

    Ah forgot to mention (might be quite important actually) there is a esp8266 module board sat over the crystal. Could its radio waves be upsetting something?

    Regards
    Russell
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    Oh this is 7.2pf maybe my 10pf is to far out. ...

    Oh this is 7.2pf maybe my 10pf is to far out.

    I think next steps is switch to using this exact crystal / a 8pf one. And adding this guard ground ring connected only via the gnd plain from with in...
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    On the stmf4 project they did not 100% die but...

    On the stmf4 project they did not 100% die but started all running wrong frequency and swapping to good components did not recover them. So they where some how damaged.



    The two dead custom...
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    I found this thread which was a very interesting...

    I found this thread which was a very interesting read
    https://forum.pjrc.com/threads/33645-Custom-Teensy-Startup-Question/page2

    First thing i noticed is every one is using 8pf crystals im using a...
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    What is the exact Crystal teensy 3.2 uses?

    I have made hundreds of custom teensy boards using a through hole Crystal with 2 load caps and they are all fine. I have now swapped to a smd crystal without the load caps and have had 2 out of 25...
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    Thx Ill be adding a 1k resistor in series with...

    Thx

    Ill be adding a 1k resistor in series with all outputs just for bit of added protection. Still cant decide on external pullup though from all my research i dont think i need it. The internal...
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    Teensy input pins best practice.

    I am aware the teensy has a internal pull-up resistor so technically you dont need to do any thing. The pin will be held high internally and you can just short it to ground to make it read low.
    ...
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    you want while (1) { LED_ON; ...

    you want


    while (1)
    {

    LED_ON;

    _delay_ms(1000);
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    Ah exact same mistake i made then hehe. Spent...

    Ah exact same mistake i made then hehe. Spent ages trying to figure out why my board would not boot.
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    May i ask which pin? :)

    May i ask which pin? :)
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    You also only need the boot-loader chip for...

    You also only need the boot-loader chip for programming. Once programmed it can be removed and the mk20 will boot up and run the firmware without it. So for production runs you can design the board...
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    Couple things to check (have stung me before lol)...

    Couple things to check (have stung me before lol)

    Make sure your usb data lines are the correct way round.
    Makes sure you have usb ground connected.
    Make sure PTA4 is NOT grounded! (mk20 will...
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    Arduino Create (online)

    When this new online editor is released will Teensy work with it? At the moment we download the Teensyduino and it installs it self into the Arduino directory putting all its bits and bobs every...
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    Ipads are for browsing the internet or watching a...

    Ipads are for browsing the internet or watching a movie not for coding. I couldn't think of a worse platform to try and write code on!
  47. Thread: Teensy Qt

    by russdx
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    I have been using the command line version for...

    I have been using the command line version for ages now and love it! But recently changed the vid/pid on the teensy for my own. And noticed this tool no longer can detect the teensy :( I assume its...
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    Thanks for that :) Yes i have seen the numbers...

    Thanks for that :)

    Yes i have seen the numbers and i was sitting down after! Hehe.

    That sorta brings me to my next question :) Purchasing your own vid/pid I had a look at usb.org and dont want...
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    So to get my custom ini signed for windows10 i...

    So to get my custom ini signed for windows10 i just need to buy the standard cert not this ev version?
  50. Getting a signed USB driver (windows driver update store etc...)

    Has any one gone through the process of getting a proper signed usb driver for there teensy device (when changing the default .ini to there own)

    Basically so you plug the custom teensy into a...
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