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  1. Replies
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    I just installed Teensiduino beta version as...

    I just installed Teensiduino beta version as usual and then manually copied the cores (from the Arduino folder) into the respective PlatformIO directory, replacing the existing ones. I have read that...
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    There is an interesting video about a guy...

    There is an interesting video about a guy analyzing the board PaulS has talked about, in case it is of your interest: https://youtu.be/VualiZkPlw0
  3. I have implemented the code to use interrupts,...

    I have implemented the code to use interrupts, but not tested it yet, as I have not received the ATmega4809 yet, and the board I am using as slave uses 5v.

    But I was thinking, maybe it would make...
  4. Thank you for your insights, Frank. I had indeed...

    Thank you for your insights, Frank. I had indeed thought about using interrupts, but I have read the documentation about interrupts in the Audio library, I am still not sure how/if adding more...
  5. Teensy and Arduino two way communication

    I am creating an audio sampler/sequencer with Teensy 4.1 and I am running out of pins, so instead continuing adding multiplexers, I have thought about using an inexpensive ATMEGA4809 (the Arduino...
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    Is it planned for the 1.54 release to support...

    Is it planned for the 1.54 release to support audio playback from a QSPI flash chip?
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    Very good news it has already being proven to...

    Very good news it has already being proven to play audio with LittleFS. I am curious about how the read speed would perform for NAND chips over QSPI in comparison with the current NOR over SPI. AFAIK...
  8. I understand. Thank you again for such a neat...

    I understand. Thank you again for such a neat explanation. :)
  9. Unfortunately I am not using a display with touch...

    Unfortunately I am not using a display with touch screen, so I cannot check it :(



    Thank you, KurtE. So, if I understand correctly, for example what the different pins marked as CS0 means that...
  10. The pin 10 is marked as a CS0 pin, so maybe that...

    The pin 10 is marked as a CS0 pin, so maybe that means you can use any digital pin as CS (at least with the ILI9341_t3n lib)?
    And the same for the DC pin?
  11. Alternate pins for ILI9341 and SPI flash in T4.1

    Hi. I am trying to figure out what are the available alternate SPI pins for this two devices, using the Teensy 4.1.

    ILI9341 Display

    I am using the ILI9341_t3n lib, but I think my doubt apply...
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    In the GUI Audio design tool, the output I2S...

    In the GUI Audio design tool, the output I2S object lists:

    Compatible DAC Chips:

    PCM5102A
    PCM1808
    PCM5242
    CS4344

    The PCM1808 should be listed as a compatible ADC chip in the input I2S...
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    I disagree that Arduino is a good IDE for...

    I disagree that Arduino is a good IDE for beginners, at least in what respect to the editor. The lacking of complex features can have some advantages for a beginner, but in my opinion things like...
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    I have started using VSCode with Teensy and I am...

    I have started using VSCode with Teensy and I am very happy with the switch. Have you tried it?
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    Thank you KurtE. You are right, I ment...

    Thank you KurtE.

    You are right, I ment TFT_MISO.

    I am using your ILI9341_t3n lib (nice job there).
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    ILI9341 - MISO pin unconnected

    Hi.
    I have a ILI9341 module connected to a Teensy 4.1. I have followed the instructions here. But, as I am not using neither the touch capability nor the SD card of the module, I have thought I...
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    Nice, BriComp. It is very interesting viewing it...

    Nice, BriComp. It is very interesting viewing it that way. I hadn't realized the progression in the T4 was perfectly linear.
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    Thank you defragster, I missed that link to the...

    Thank you defragster, I missed that link to the sketch. In case anyone is interested, I have run the CoreMark sketch on the Teensy 4.0 and the Teensy 3.6 at different speeds and these are the...
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    Wow, it looks that stepping down to 528 MHz would...

    Wow, it looks that stepping down to 528 MHz would considerably increase the its lifespan. That joined to the lower power consumption makes me consider stepping down to 528 MHz. How remarkable would...
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    Thank you for the insights Paul. Unfortunately, I...

    Thank you for the insights Paul. Unfortunately, I have just tried it and did not work.


    Raw SerialFlash Hardware Test


    Read Chip Identification:

    JEDEC ID: EF 40 19
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    True. I didn't realized it has an F instead a J,...

    True. I didn't realized it has an F instead a J, that is what the chip is supposed to be.
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    Hi, all. I have finally been able to get my...

    Hi, all.

    I have finally been able to get my breakout board and test it.

    22716

    Unfortunately it failed the RawHardwareTest of the SerialFlash lib. I ran it several times, always after the...
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    Looks interesting. I will have a look at it. ...

    Looks interesting. I will have a look at it.

    In fact I have followed that thread, as it is a very interesting project, but I might have missed that, or I read it in the past but I didn't remember...
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    Hi, Sandwich. Indeed I am using the...

    Hi, Sandwich.

    Indeed I am using the adcHighPassFilterDisable method in my current project. The reason it is not present in the sketch I posted is because I tried to reduce the code as much as I...
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    Thank you for your reply Rob. I think what you...

    Thank you for your reply Rob.
    I think what you are refering to is gain values for sounds playing simultaneously. In this case what I am changing is the global volume, so there is no sum in gains.
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    Thank you for your response, defragster. I...

    Thank you for your response, defragster.

    I think I should have added in my previous post that my intention is to use the flash chip for playing audio files. And AFAIK the Audio library does not...
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    W25Q256 breakout for Teensy 4.1

    Hi, guys.

    I want to use a W25Q256 SOIC16 flash ship with the Teensy 4.1 and I thought I could try making a breakout. The idea is similar to the one of this post, but in my case, with the Teensy...
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    Hi MarkT, thank you for your insights. Not sure...

    Hi MarkT, thank you for your insights. Not sure how to check if is getting all zeroes, I'll have to check it.

    I thought about creating my own audio circuit in a PCB, but frankly I wouldn't know...
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    No, I am not talking to the display. In fact I...

    No, I am not talking to the display. In fact I have tested this simple sketch that is doing nothing with the display really, and the sound is present.



    #define VOL_HEADPHONES_PIN A3
    ...
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    Audio issues with Teensy 4.1 + Audio Board

    I was working in an audio project in Teensy 3.6 with the Audio Board and I decided to migrate it to Teensy 4.1 and the rev. D Audio Board.
    I don't know if it may be relevant, but I soldered a PSRAM...
  31. I would recommend you to get an audio board ...

    I would recommend you to get an audio board (make sure you get rev C, as rev D is for Teensy 4.x).

    This board makes it easier to use the audio inputs and outputs and offers higher audio quality...
  32. I ordered a couple of them from Pimoroni, in the...

    I ordered a couple of them from Pimoroni, in the UK:
    https://shop.pimoroni.com/products/8mb-psram-chip-for-teensy-4-1
  33. @mjs513 Fantastic explanation. I'll have a look...

    @mjs513 Fantastic explanation. I'll have a look at the datasheet.

    Thanks again.
  34. Well, after downloading I ran successfully the...

    Well, after downloading I ran successfully the tests for the PSRAM. Then I tried the following test for the Flash chip:...
  35. I see. I will try with that branch then. Than...

    I see. I will try with that branch then.

    Than you very much for such comprehensive clarifications.
  36. I case it helps, I happened to solder the PSRAM...

    I case it helps, I happened to solder the PSRAM to my Teensy 4.1 last weekend, both ordered from Pimoroni too. And the result of the test was positive. Of course, there could be a problem with that...
  37. Thank you both for your replies. Have been very...

    Thank you both for your replies. Have been very helpful.

    I think I used the latest versions of the libraries. I just downloaded the zip from https://github.com/PaulStoffregen/teensy41_extram and...
  38. Errors in T 4.1 with PSRAM and Flash chips

    Hi, guys.

    I have been trying to migrate a project from T 3.6 to T 4.1. In my T 3.6 project I have a Winbond 25Q128FVSG flash chip soldered in the audio board and I decided to upgrade to the new...
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    It's still in development, as currently I can...

    It's still in development, as currently I can only work on it on weekeds. I still have to implement all the MIDI and continue working on the sequencer, sampler, sound editing and UI functionalities....
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    Thank you Paul, well to know. Currently I am...

    Thank you Paul, well to know. Currently I am using a Winbond 25Q128FVSG, so I might try the new ones.
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    Serial Flash erase and write speed

    I am using a W25Q128 soldered to the Audio Board with my Teensy 3.6. As the erase() and write() tasks are very slow, I was thinking if the Teensy 4 helps at all in that matter. I think that the low...
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    I was just looking for something similar. But I...

    I was just looking for something similar. But I was considering using a SOIC-16 breakout with a bigger chip with more memory.
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    The basis of time stretching is easy, but...

    The basis of time stretching is easy, but implementing it in a way that sounds "good" is not that easy.

    Time stretching is based on the repetition of little pieces (grains). This way you "stretch"...
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    SD breakout for Teensy 4.0?

    I think the easiest way to connect an SD card in Teensy 4 would be with a breakout that has a FFC 8 pin connector
    17628

    Is there a breakout like this available anywhere?

    Another think I am...
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    Hi. I haven't done further research on this as I...

    Hi. I haven't done further research on this as I have switched to Frank B's suggested AdioTiming library as method to change sample rate.
    I can't remember now if I realiced about what you comment on...
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    Interesting. It seems that shipping overseas is...

    Interesting. It seems that shipping overseas is just $3. Is there any difference with the original version, apart from the color?
  47. Thread: Drum pad

    by JotaEfe13
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    Yes. That is the most likely explanation. Those...

    Yes. That is the most likely explanation. Those tiny chips are tricky to solder properly. At least for me.
  48. Thread: Drum pad

    by JotaEfe13
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    You need this library:...

    You need this library: https://github.com/PaulStoffregen/SerialFlash

    It has an example sketch to test the hardware. If you run it succesfuly, you can run the sketch to copy files from a SD card....
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    LCD Display. No ILI9341 chip?

    Hi, I had an ILI9341 display and it worked properly, aside from two lines of "dead pixels" that were there from the beginning.

    I have just bought 4 new displays on eBay:...
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    I am using it indeed. But sometimes I am missing...

    I am using it indeed. But sometimes I am missing information. What I am not sure of is where/why is that data being missed. I don't know if storing the queue data in a bigger buffer would help.


    ...
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