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    Ok great, thanks for saving me the time of...

    Ok great, thanks for saving me the time of building up a DIY board to find that out!

    Matt
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    Having searched the shared data sheet and...

    Having searched the shared data sheet and reference manual, the only differences I can find are in the screenshots below. In theory, all other chip behaviours and registers are the same.

    If I...
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    Teensy with MK66FN2M0VMD18

    Hey all / Paul,


    The Teensy 3.6 is based on the NXP MK66FX1M0VMD18. The MK66FN2M0VMD18 appears to be essentially the same chip, with more Flash memory. They share a data sheet, and the pinout...
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    Hey Paul, Just checking in on this - when do...

    Hey Paul,

    Just checking in on this - when do you plan to progress development on USB Host?

    I'm interested in MIDI host for multiple devices through a hub, and unfortunately UHS_30 and...
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    Ok, thanks Paul :)

    Ok, thanks Paul :)
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    Teensy 3.6 USB MIDI host development status

    Hi Paul,

    I'm keen to make use your USB MIDI Host support on Teensy 3.6 as soon as I can! What's it's current state of development?

    If you need someone to do some testing, please let me know...
  7. Teensy 3.1 with Felis USB Host library hub issue

    Hi there,

    I'm trying to get Teensy 3.1 as a USB host communicating with multiple USB MIDI devices.

    I'm using the Mini USB Host shield based on the MAX3421E chip: ...
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    Thanks Paul!! This works for me: ...

    Thanks Paul!! This works for me:



    USB0_INTEN = 0b00000000; //Disable USB interrupts
    USB0_CTL = 0b00000000; //Disconnect USB devices
    delay(750);
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    Hi again all, I've made my question more...

    Hi again all,

    I've made my question more concise, so hopefully Paul or someone else can shed some light on this.

    Using Teensy 3.1 running the following code, the USB device doesn't...
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    USB midi shutdown / init

    Hi all,

    I'm using Teensy 3.1 and I have two programs in my teensy flash and I can jump between them. Everything appears to be working nicely except they both require USB MIDI.

    When running...
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    Analog Reference Low issue

    Hi all,

    I'm using Teensy 3.1, bypassing the built in voltage regulator in order to get USB communication working from 2xAAA batteries. All I've done is cut the trace by the VREGIN pin and sent...
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    I tried bypassing the regulator and it works. Am...

    I tried bypassing the regulator and it works. Am I likely to have any issues doing this?
    Thanks
  13. Replies
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    Low power USB

    Hi all,

    I have Teensy 3.1 USB communication working from 3x AAA batteries in series (4.5v), is there any trick to make it work from 3v like there is with the teensy 2 (connect UCAP to 3v)?
    ...
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    Great, thanks both

    Great, thanks both
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    USB communication with battery power

    Hi all,

    I'd like to know if I can power the Teensy with a battery, cut the VUSB trace so that the teensy can only be powered through the battery, and still communicate with a computer over USB?
    ...
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    Purchased a new memory chip, swapped them out and...

    Purchased a new memory chip, swapped them out and it works a charm. Must have been a bad one.

    Thanks for you help.
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    Thanks for the reply drewrisinger. As Paul says,...

    Thanks for the reply drewrisinger. As Paul says, it's just baffling that it would work for him and not us, using the same code and components. I've ordered another win bond chip and will report...
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    Ok thanks for the help anyway - I'll order...

    Ok thanks for the help anyway - I'll order another chip incase this one's duff!
  19. Replies
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    Just check all the others too, all fine.

    Just check all the others too, all fine.
  20. Replies
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    Pins 3,7 & 8 all connected to 3v3 - checked with...

    Pins 3,7 & 8 all connected to 3v3 - checked with a multimeter.
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    Trouble with W25Q128FV on Audio adapter

    Hi all,

    I am using a W25Q128FV with the audio board and trying to get basic functionality. I'm having trouble with the 'Erase Everything' and 'RawHardwareTest' examples.

    The chip is soldered...
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    I do indeed! Thank you Paul, I didn't know about...

    I do indeed! Thank you Paul, I didn't know about that feature!
  23. Replies
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    There is an audio menu in there for the Arduino...

    There is an audio menu in there for the Arduino Due Audio library. You can see in my screen grab above^^
  24. Replies
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    Yeah, here's what I see: 6426

    Yeah, here's what I see: 6426
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    It was definitely installed with Teensyduino, I...

    It was definitely installed with Teensyduino, I can use it, it just doesn't show up in examples.
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    Audio Library examples issue

    I cannot get Arduino to show the Teensy audio library examples. I am aware that you need to select the correct board. I have re-created the issue on a second machine. These are the steps I've...
  27. Bit more googling and it looks like it's simple...

    Bit more googling and it looks like it's simple because the max speed of this encoder (and all others like it) is ~60rpm.

    I'm looking at various debouncing techniques and would rather not alter...
  28. 24PPR encoder issue with teensy library

    Hi Paul and co,

    I'm sorry if this has been covered elsewhere but nothing showed up in a search. I'm using the following incremental encoder with 24 pulses per revolution:
    ...
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    Just at a glance, it looks like you're trying to...

    Just at a glance, it looks like you're trying to send the newPosition variable straight out as a MIDI CC value. MIDI CC range is 0-127, so you would need to do something to keep the variable within...
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    aaaand IT WORKS! Turns out the problems were...

    aaaand IT WORKS! Turns out the problems were running VCC under the crystal along with the capacitance load settings for the crystal.

    I rewired it like this:

    2947

    And changed the settings...
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    Yes you're quite right sorry... It's actually a...

    Yes you're quite right sorry... It's actually a pulse from GND to +3v3 at an interval of ~56 uSecs, which is about 17.8KHz, ~1000 times slower than my crystal should be... Could this still be caused...
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    I've had a good probe - all power and ground pins...

    I've had a good probe - all power and ground pins are ok.

    Neither of the chips is showing any sign of communication and when probing the Reset line from pin 8 of the Mini54 I get some weird noise...
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    Thanks for the suggestions all, I will have a...

    Thanks for the suggestions all, I will have a look at each one later this week and report back.
  34. Replies
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    Yep, checked from pin to pin with a multi-meter. ...

    Yep, checked from pin to pin with a multi-meter. all connection are good and I can't find any solder bridges / shorts
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    Apologies, here's a better one: ...

    Apologies, here's a better one:

    https://drive.google.com/file/d/0BwUFiZpwTq6Wc0tXcEg5RTh6LTg/view

    You have to click download to see it in full resolution.

    EDIT: And a better layout:...
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    Sadly that didn't make a difference. Strangely...

    Sadly that didn't make a difference. Strangely the Teensy still operates fine with the line:


    OSC0_CR = OSC_SC2P | OSC_SC4P | OSC_SC8P | OSC_SC16P ;

    Unless it's not re-compiling properly.....
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    Thank you Paul, I had totally overlooked...

    Thank you Paul,

    I had totally overlooked that, I will give that a go on my new boards!

    Also good to know you support people like me having a go!

    Cheers
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    DIY Teensy woes

    Hi all,

    I received my second round of PCBs based on the teensy and audio shield schematics put together and am disappointed to say that once again I cannot get them to work. I am burning through...
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    Teensy extra RAM options?

    Hi there,

    I've been using teensy3.1 to record and perform granular synthesis with audio. The internal RAM only gives me about 2 second of recording time @ 22.05KHz / 15-bit using uLaw...
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    EDITED: Ok so it works for loop2.wav and...

    EDITED:

    Ok so it works for loop2.wav and hh.wav.

    I had a third wav file that didn't work (below) and threw up the same error, however after opening it and re-saving it in seemingly the same...
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    Hi Paul, here you go: ...

    Hi Paul, here you go:

    https://drive.google.com/file/d/0BwUFiZpwTq6WSndxdkltSGowLVE/view?usp=sharing

    https://drive.google.com/file/d/0BwUFiZpwTq6WTkRfTUNPRVNlWU0/view?usp=sharing


    Neither of...
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    wav2sketch problems

    Hi there,


    I've compiled wav2sketch on mac and it works great for a few wav files I've tried. However, I get a format error for most files:


    wav2sketch: error in format of file 1.wav
    ...
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    Good to know you found the issue. I left pins...

    Good to know you found the issue. I left pins 19,20 &21 unconnected on my schematic since I'm not using the RTC - that shouldn't cause problems should it?

    Cracking on with a second attempt now!
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    OK. Well thanks for all your advice, it really...

    OK. Well thanks for all your advice, it really helps. I will be back with something to show for myself!
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    OK thanks, constantine. Just one more question...

    OK thanks, constantine. Just one more question for now... Surely it's actually impossible to route all signal and power traces on one side? Everything I've read on 2 layer design says not to worry...
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    Woah OK. Well thanks for taking the time...

    Woah OK. Well thanks for taking the time constantin, I appreciate it. I have already produced many working prototypes using the teensy and audio sheild and it's the cost difference of making my own...
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    The other decoupling caps do tie directly to vcc...

    The other decoupling caps do tie directly to vcc and vdd. But I admit that bit looks a bit weird. I didn't use an auto router. The ground plane is being used, I'm just sending 3 caps to the same...
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    My 3.3v LDO output from the MK20 on pin 7 is...

    My 3.3v LDO output from the MK20 on pin 7 is going to VDD pin 3 before it goes anywhere else, as shown below. (The loop-back under the chip)

    Could this be causing issues?

    2430

    EDIT: I...
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    Right, I've made my third of each board. None of...

    Right, I've made my third of each board. None of them have had any issues with the multimeter. I've been generous with flux and run over all the pins a second time on each. I'm 99% confident there...
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    Ok, here's what I've got: No activity on I2C...

    Ok, here's what I've got:

    No activity on I2C SDA or SCL. No activity of PTA2 or PTA3. PTA 0 has constant activity and can see action when uploading.

    No activity on reset pin.

    So I guess...
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