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    yes, things move on, way back about 6-8 years ago...

    yes, things move on, way back about 6-8 years ago I used WaveHC WaveRP etc I think on a UNO and was able to "seek" part way into a WAV file or maybe a RAW file. I was able to play part of a file or...
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    I was doing a project using a Teensy3.6 so I...

    I was doing a project using a Teensy3.6 so I thought I would try this out as the 3.6 has its own SD card.
    I used the WavePlayer sketch in the Audio Library and set it for AudioAnalogStereo. I then...
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    " I don't believe it" ..... I have just noticed...

    " I don't believe it" ..... I have just noticed that when compiling and uploading the CPU Speed was at 48 MHz .... I normally keep this at 96 MHz overclocked. So set it back to 96 and teensy now...
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    Snooze on Teensy 3.2

    I have been trying the examples in Teensy library for Snooze deepSleep and hibernate. I get both to work as I think OK.
    Before I started Teensy was taking about 45 mA when running small sketch eg...
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    Aye......computer always does what it is told to...

    Aye......computer always does what it is told to do...........
  6. OR......if you have plenty of spare pins use a...

    OR......if you have plenty of spare pins use a R-2R ladder of resistors.
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    I am not in position to do testing at present but...

    I am not in position to do testing at present but just reading your mods....
    I assume you have defined #define FRANKB_PATCH somewhere.....couldnt find it in your cpp file ????
    Also orig for...
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    I was only testing on windows10 and Linux for...

    I was only testing on windows10 and Linux for Teensy3.2. FrankB_Patch worked for me as described in #75. You need to add the bits in RED text #DEFINE and #ifdefs etc.
    This is location for file for...
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    Have also checked....... USB Data+ and Data-...

    Have also checked....... USB Data+ and Data- continuity OK through the 2 x 33 ohm resistors and up to pin5 and pin6 of main chip. Also Id pin 4 of USB OK up to pin 23 main chip.
    ....... ????
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    Link below to forum thread on the MINI54..........

    Link below to forum thread on the MINI54.......
    https://forum.pjrc.com/threads/27497-MINI54-Bringup

    When I plug in teensy3.1 I see the 56us pulses on the reset pin. If I press the button the...
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    Thanks for replies, I had tried your suggestion...

    Thanks for replies, I had tried your suggestion and read over the troubleshooting pages, but no further, just measured all the voltages on the board and all seem to be there. Still not found what...
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    Yes, there probably other things I could check,...

    Yes, there probably other things I could check, but I have checked the leads and the PC port and Pressing the button on the board, I have also checked the 5V coming in on the USB and at Vin pin and...
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    PC not detecting Teensy 3.1 plugged in

    I have old Teensy3.1, I think it is 3.1 because 3.2 is not written on the back of it. It has been working for a few years OK until today (it is my demo box I use to try things out ?). I had it...
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    Thanks Paul for all the info. I don't doubt...

    Thanks Paul for all the info. I don't doubt Teensy's capabilities, I think it is great, including all the libraries and the support services you provide.
    ....it was just to get a discussion on the...
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    Thanks for reply. My question was more on the...

    Thanks for reply.
    My question was more on the quality of sound out as a result of using waveform as opposed to waveform for simple playing of waveform and maybe making some changes to freq etc but...
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    AudioSynth Waveforms

    There is AudioSynthWaveform and AudioSynthWaveformModulated in the Audio library. The main difference is the Mod one has 2 inputs for modulation. If I want to just simply play a waveform at various...
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    if you cannot plug in the Teensy USB from your...

    if you cannot plug in the Teensy USB from your computer USB how are you going to program it?.

    Connect the battery between VIN pin and GND pin that should power up teensy and don't plug in onboard...
  18. Yes I understand envelopes etc are the way to go....

    Yes I understand envelopes etc are the way to go. Initial post was I assumed to get a basic sine wave playing different notes without clicks.
    Code below is probably the most basic and play 5 notes...
  19. Post your code a simple version. Yes held notes...

    Post your code a simple version. Yes held notes are OK while playing, I assumed it was the changing of notes from say A to B to C etc was the problem. as a test do that by changing the frequency...
  20. There will be no clicks because continuous. To...

    There will be no clicks because continuous. To try it without midi use a for-next loop to increment up and down the frequency
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    Will Teensy still work powered on its own USB If...

    Will Teensy still work powered on its own USB If you link again the pads you cut with a pin?

    Do you just want the battery as alternative power source to the onboard USB?
  22. Play a simple continuous sinewave and use the...

    Play a simple continuous sinewave and use the midi note change command to change the frequency of the sinewave for the corresponding note
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    This is a variation of my last post. I allows...

    This is a variation of my last post. I allows switching between EXTERNAL and INTERNAL Refs for the DAC and hence for 12 bit resolution maps either 1.2 V to 4096 OR 3.3V to 4096
    Default for good...
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    This is a simpler sketch and lets you see 0.0. to...

    This is a simpler sketch and lets you see 0.0. to 3.3 in 0.1V steps on DMM using analog write only an 12 bit resolution


    // Simple DAC test on Teensy 3.2
    // maps 3.3 volts to 4096 in 0.1V...
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    How do you know A14 is broken. How are you...

    How do you know A14 is broken. How are you measuring it. If using a multimeter you will read only the dc value 0.6V or 1.64V if the ac signal is high freq. If using a scope you should see both the ac...
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    I don't think your problem is same as mine..........

    I don't think your problem is same as mine.......

    In may case the 1.2V on C2 was low for "broken".

    What change were you expecting, what were you measuring??.

    Are you using the Audio Library,...
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    No the problem has not been solved. I got the...

    No the problem has not been solved. I got the "faulty" Teensy3.2s replaced and they worked OK, Internal Ref and External Ref settings.
    In my case the voltage on C2 was low. But dont know for what...
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    Thanks for reply. I have checked around this...

    Thanks for reply. I have checked around this capacitor C2 and cannot see any damage. The closest pins to it had not been soldered. The only pins that had been soldered are 15-19, 22, 23, 25,...
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    I still haven't got to the bottom of this...

    I still haven't got to the bottom of this problem. I have connected up maybe 60 Teensy3.2 over the past years and never had this problem until recently. I have connected another 10 this week and...
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    I have looked all around the board and cannot see...

    I have looked all around the board and cannot see anything bridging or shorting any of the pins or the pins on the chip. The only other thing I found is the DC voltage at the DAC pin on a good Teensy...
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    When I change the line dac1.analogreference to...

    When I change the line dac1.analogreference to INTERNAL in the test sketch from my earlier post the output of the "faulty" teensy is about one quarter amplitude it should be. Comparing to same test...
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    Thanks PaulStoffregen for your reply. Sorry I was...

    Thanks PaulStoffregen for your reply. Sorry I was typing my last post when you were posting. Yes the "faulty" board is only connected to the USB port of my computer sitting in isolation on my wooden...
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    Thanks for reply, I have always used AGND but...

    Thanks for reply, I have always used AGND but have tried both now and dont see any difference, problem still there.
    I didnt post any test code earlier most teensys dont show the problem and I maybe...
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    Did some more checking. I have 15 of teensy3.2...

    Did some more checking.
    I have 15 of teensy3.2 and I checked each with only a lineout jack connected between DAC and analogue Ground. Plugged this into computer linein and recorded each teensy...
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    Teensy 3.2 DAC output Low Amplitude

    Are all Teensy 3.2 the same default configuration. I have been using quite a lot of Teensy3.2 lately and I send the same program sketch to them all using the same version IDE. It basically sends an...
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    Differences in Timers

    I am trying to play audio waveform at various frequencies by playing the wave array at different speeds using timers. I get it to work with interval timer and frequency timer both give good waveform...
  37. Yes, it is probably pitch shifting. playing wave...

    Yes, it is probably pitch shifting. playing wave array at various freqs and mixing and filtering.



    const int16_t tone1[256] = {
    0,
    628,
    1256,

    256 element array
  38. Looked at your sketch for recording and playing...

    Looked at your sketch for recording and playing queues. I think I understand what it does recording mic or linein in a queue for each channel and allowing it to be switched and played etc.
    As I see...
  39. Thanks for your fast response, I am replying to...

    Thanks for your fast response, I am replying to your post #4....That is magic it works perfectly...thats the basics, will need to play with it to get different rates of playing sorted etc and...
  40. Thanks for reply, I had looked at this, but...

    Thanks for reply, I had looked at this, but basically I don't know how or cannot get the "getBuffer()" to look at the data, It compiles outputs just random noise.???
    attached is my basic code after...
  41. Direct audio samples into Audio Library objects

    I can use the audio library to play sounds, waveforms etc and all works very well, but is there a way to directly input the samples from a sound array or waveform and play continuous at various...
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    When you open Arduino IDE, click File menu, look...

    When you open Arduino IDE, click File menu, look down for Preferences, click it and a page of settings opens , near the top is the entry for path to sketchbook folder.....make sure it corresponds to...
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    I put it in my sketch folder as entered in "File,...

    I put it in my sketch folder as entered in "File, Preferences". can you compile other sketches
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    Looks like your installation paths are not...

    Looks like your installation paths are not correct or you have changed the names or location of something...??

    I copied the Simplewavetable sketch from the examples folder to my normal sketch...
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    Connecting DAC to low OHM speakers directly will...

    Connecting DAC to low OHM speakers directly will not work.
    The link below shows a simple means to connect headphone or earphones directly....make sure they are 32 ohm or more.
    It gives plenty of...
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    Yes, FastTouch works on Teensy 4 and very fast,...

    Yes, FastTouch works on Teensy 4 and very fast, can read all pins within 1 ms ........ and no resistors just pads single wired to the pins
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    Probably means a simple solution to give 4 touch...

    Probably means a simple solution to give 4 touch pads.
    With the capacitive sensor sketch only 4 resistors are required, it should be easy to test if they are fast enough.
    some of the other external...
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    Why not try the Capacitive Sensor sketch in the...

    Why not try the Capacitive Sensor sketch in the Library.
    Copy pasted below.......an it works in Teensy 4 as it is gives 3 touch pads.
    If more pads needed just add more resistors........and it is...
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    Maybe or maybe not, I misunderstood the earlier...

    Maybe or maybe not, I misunderstood the earlier posts. I thought the problem was the switching or starting and stopping the actual waveforms and how clicks or large gaps appear in the sound output....
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    If you are playing a midi keyboard....it is...

    If you are playing a midi keyboard....it is sending out the note on and note off to teensy I assume...I assume teensy is the synthesiser. your code will need to be setup to receive these and will...
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