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  1. Replies
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    A bad mistake I did here... i had connected the...

    A bad mistake I did here... i had connected the flash chip GND pin to Analog GND... shame on me.



    Anyway, now the small PCB is done; i'm testing it, seems working fine.
    18688
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    Good, thank you Neurofun. I'm designing a small...

    Good, thank you Neurofun. I'm designing a small pcb for the W25Q256, with a groudplane, to be soldered toghether with the Audio shield (on top, or below) ... let's see how it will perform.
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    Going back to W25Q256.. I read on Audio shield...

    Going back to W25Q256..

    I read on Audio shield schematics (where an 8-pin flash memory IC is contemplated), that "RST" is indicated. While on 8pin ICs (like W25Q128) /RESET and /HOLD use the same...
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    I got it...Ok, thank you Frank for the explantion!

    I got it...Ok, thank you Frank for the explantion!
  5. Replies
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    For completeness: after formatting, using normal...

    For completeness: after formatting, using normal speed playback, the report shows more or less same values and same behave:

    0 218
    1 7
    2 217
    3 7
    4 2143
    5 7
    6 217
    7 7
  6. Replies
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    Hi Paul, thank you for your answer; I started...

    Hi Paul, thank you for your answer; I started adding some lines in order to get min, max and average times, and the result was so strange (for me!), that I decided to see each value; this is my code,...
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    SD card read time

    I'm playing with playSDraw using an SD card plugged in Teensy 3.6 built-in socket. The scope is to use the built-in SD card in place of flash memory in my midi expander, since the quad SPI could be...
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    Hi Michael, I made some tests with micro SD...

    Hi Michael,
    I made some tests with micro SD built on Teensy 3.6, clock 180 MHz; I played with play_SD_raw, modifying the lenght of the data array read from SD, as follows.

    The "core" part of...
  9. Replies
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    Very basic doubt...

    Hi all,
    since the last posts, I've completely developed my Lilla midi expander and completely rewritten playFlashraw function. Now, going back to the beginning of my work, I notice that I neglected...
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    The attached pic was this: 18396 In these day...

    The attached pic was this:
    18396

    In these day I went on with my tests... and this assembly showed some limit: with intense use of the chip some errors appares. I guess if a small PCB with its...
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    Sorry, here: #else ...

    Sorry, here:


    #else
    Serial.println("failed!");
    AudioStartUsingSPI();
    #endif


    Serial.println("failed!") is a refuse.
  12. Replies
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    Hi Michael, I had not notice that! So.. thank...

    Hi Michael,
    I had not notice that!

    So.. thank you for your detailed analysis: at the moment I would remain on Teensy 3.6, or maybe switch to T4.0 in a next release; and for all the topics you...
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    But... I found this post: ...

    But... I found this post:

    https://forum.pjrc.com/threads/55662-Polyphonic-playSdRaw?highlight=playSDraw

    It says that for polyphonic application (mine uses 8 voices at least) it's raccomanded...
  14. Thread: [queued] Lilla

    by Sandro
    Replies
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    927

    New feature introduced: anticlick for loop...

    New feature introduced: anticlick for loop operations
  15. Replies
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    Good suggestion! I had not considered this! ...

    Good suggestion! I had not considered this!



    For my application, the midi expander:
    https://forum.pjrc.com/threads/57897-queued-Lilla

    100M for file system is more than enough!! :o
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    This is so important to me! I didn't know this...

    This is so important to me! I didn't know this fact of quad SPI... Maybe it means that reading data rate from micro SD card on Teensy is comparable/faster than from flash memory soldered on Audio...
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    Hi Michael, thank you for your answer; I didn't...

    Hi Michael, thank you for your answer; I didn't get if you are talking about W25Q256 32M 16-pin chip or about the W25Q128 16M 8-pin chip (which is not my case); I'm using SerialFlash in my code....
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    Using W25Q256 on Audio shield

    Hi all, I'm experimenting a W25Q256FV 16-pin SOIC 300-mil on Audio shield Rev B (on teensy 3.6, clock 240MHz), in order to store audio files to be played. Actually I have connected the flash chip...
  19. Thread: [queued] Lilla

    by Sandro
    Replies
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    927

    Also tested W25Q256FV but I had an issue, looking...

    Also tested W25Q256FV but I had an issue, looking like a loss of connection... as soon as possible I'd like to share .
    Thanks
  20. Thread: [queued] Lilla

    by Sandro
    Replies
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    927

    Lilla debuts at Soundmit...

    Lilla debuts at Soundmit
    https://soundmit.com/it/espositore/lilla?fbclid=IwAR2jf7qKXauX68H3965gqcV8UuzMgt5dgzjKM1PSYK1YQ0R0-5EKiC-8jE8
    Turin(Italy), 2-3 Nov 2019
  21. Thread: [queued] Lilla

    by Sandro
    Replies
    5
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    927

    17839 Lilla is an open source project for a...

    17839
    Lilla is an open source project for a polyphonic midi expander, based on Teensy 3.6 microcontroller. Lilla includes:

    devices/ICs:
    n.1 Teensy 3.6 microcontroller
    n.1 Teensy Audio...
  22. done: https://forum.pjrc.com/threads/57897-Lilla...

    done: https://forum.pjrc.com/threads/57897-Lilla
    thank you!
  23. Thread: [queued] Lilla

    by Sandro
    Replies
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    927

    [queued] Lilla

    Dear friends, I'm proud to share my midi expander project (I would apologize in advance for the naivety of my code)
    https://github.com/SandroGrassia/Lilla-midi-expander

    I would say thank you to...
  24. Great!!! Thank you so much Paul!! I'm testing the...

    Great!!! Thank you so much Paul!! I'm testing the updated AudioMaster library on my "Lilla" midi expander, using a new Teensy 3.6 board and overclock @216MHz: no "pitch fluttering"!! It's also time...
  25. Hi mmalex, I have just found this post (shame...

    Hi mmalex,
    I have just found this post (shame on me... so much time I would have saved If I had found it before!!) and I'm happy that issue of overclock has been solved; recently I wrote a post...
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    The reason why I'd like to experiment two flash...

    The reason why I'd like to experiment two flash memory chip is to improve the number of contemporary players. I've seen that reading 128 samples from flash chip requires about 100 microseconds; in a...
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    Double flash memory chip

    I'd like to use two flash memory chips on Teensy 3.6, connected to different SPI busses (to enable contemporary access): the first chip on the Audio shield (SPI0), the second chip connected to SPI2...
  28. I had not tried with simple applications yet; if...

    I had not tried with simple applications yet; if I upload the example "WavFilePlayer" and play it on my Teensy 3.6 boards, this is the result:

    Old Tensy 3.6 (bought June 2018 and installed...
  29. Hi all, if someone would be so kind to check on...

    Hi all,
    if someone would be so kind to check on his Teensy 3.6 what happens... I wrote some more simple code. All files, included 0.RAW, can also be downloaded here:...
  30. Hi all, I'm a bit desperate... cannot find any...

    Hi all, I'm a bit desperate... cannot find any solution... should i post this issue into the Audio Projects section?
    Thanks
  31. Hi all, I did many tests these days, again using...

    Hi all,
    I did many tests these days, again using my full code and also simplified versions, but the result is always the same: only the old board works perfectly for my application. I did some...
  32. Thank you Paul, good to read that Teensy 3.6 has...

    Thank you Paul, good to read that Teensy 3.6 has not been changed!! I'll go deeper in my troubleshooting.
  33. Malfunction with Teensy 3.6 in an audio project

    Hi all,
    I made a first and perfectly working prototype of an audio application, based on Teensy 3.6 (bought on June 2018) + Audio Adaptor + W25Q128JV flash memory:

    17334

    Ready to make again...
  34. Thread: Drum pad

    by Sandro
    Replies
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    2,043

    It's not so difficult if you use a very thin...

    It's not so difficult if you use a very thin soldering iron tip, the right temperature ana a good tin wire... This is my procedure: place the IC on its position, fix it perfectly with scotch tape,...
  35. Thread: Drum pad

    by Sandro
    Replies
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    2,043

    If the Audio Adaptor is connected properly to...

    If the Audio Adaptor is connected properly to your Teensy, and the memory chip is a W25Q128, than I agree, it could mean that there is some contact/solder issue.
  36. Thread: Drum pad

    by Sandro
    Replies
    17
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    2,043

    Hi Ofishar, this an example for W25Q128FV in SMD...

    Hi Ofishar, this an example for W25Q128FV in SMD size:...
  37. Thread: Drum pad

    by Sandro
    Replies
    17
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    2,043

    Yes I'm here, developing an amazing midi expander...

    Yes I'm here, developing an amazing midi expander ;)
    Ok, when I'll be back from my vacation I'll look for the code I wrote for my drum pad, much simpler than your I belive.
    Here in this pic the...
  38. Thread: Drum pad

    by Sandro
    Replies
    17
    Views
    2,043

    Hi Ofishal, you can buy one W25Q128FV in SMD...

    Hi Ofishal, you can buy one W25Q128FV in SMD package and solder it on the prepared position of the Audio Adaptor, or buy the traditional DIL8 package and connect its pins to the corresponding pins...
  39. Solved! a connection faulty... sorry!!

    Solved! a connection faulty... sorry!!
  40. Testing S/P DIF with AudioPlaySerialflashRaw

    Hi all,
    I'm trying to get S/PDIF optical output work using AudioOutputSPDIF with AudioPlaySerialflashRaw, using a Teensy 3.6, and a flash memory chip W25Q128FV. Same configuration works on Teensy...
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    Hi, sorry I didn't do any video

    Hi, sorry I didn't do any video
  42. Replies
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    Good that the issue is addressed! Yes I...

    Good that the issue is addressed!


    Yes I agree this is a perfect workaround.
    Thank you!
  43. Replies
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    1,048

    Hi Theremingenieur, yes this workaround is...

    Hi Theremingenieur, yes this workaround is exactly what I'm doing to overcome the issue, and works perfectly ;)
  44. Replies
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    Hi markonian, I belive that this cannot be...

    Hi markonian,
    I belive that this cannot be avoided, otherwise the Adafuit logo remains on the screen.
  45. Replies
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    I tried with OLED_RESET = -1: #include...

    I tried with OLED_RESET = -1:


    #include <Wire.h>
    #include <SPI.h>
    #include <Adafruit_GFX.h>
    #include <Adafruit_SSD1306.h>

    #define SCREEN_WIDTH 128 // OLED display width, in pixels
    #define...
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    Adafruit SSD1306 multiple instances issue?

    Hi all,
    In my project, with the amazing Teensy 3.6, I'm using #2 I2C OLED displays 32x128, cause I'm not able to make this guy work:
    15278

    One display has its original I2C address 3C, the other...
  47. Aaagh! I did a big mess in my PC... (Also guess...

    Aaagh! I did a big mess in my PC... (Also guess why different libraries have the same name)... Anyway I'll make some cleanse than I'll try again!
    Thank you
    Sandro
  48. Hi tonton81, I found references to Wire.h in...

    Hi tonton81,
    I found references to Wire.h in Adafruit_SSD1306.h file; nothing in Adafruit_GFX.h . So, I did the following mods:

    1) in Adafruit_SSD1306.h I wrote:
    #include <i2c_t3.h>
    instead of...
  49. Problem solved, it was a mistake in my code;...

    Problem solved, it was a mistake in my code; anyhow I'll try Wire1 instead of Wire, I'm curious about it...
    Thank you
  50. In the meanwhile I found a mistake in my code,...

    In the meanwhile I found a mistake in my code, maybe that was the problem... I have to dig a little bit now...
    Basically I'm using these libraries:


    #include <MIDI.h> //...
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