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  1. Yeah I thought about trying a different I2S...

    Yeah I thought about trying a different I2S board. But to be honest if I can get the sound quality that works for me out of the PT8211 then it would be hard for me to switch. The great thing about...
  2. anecdotally I have noticed that is the biggest...

    anecdotally I have noticed that is the biggest difference with the onboard DAC is that it starts breaking up with more then 3 notes, for the audio shield I can get get up to 8 (have not tried more...
  3. Testing audio shield vs PT8211 vs on-board DAC for audio synthesis

    Hey folks,
    I want to get some better data on what the real implications of the different solutions for getting audio signals from a teensy-based synth build.
    My idea is to use my first three...
  4. figured it out, I was missing the parenthesis ...

    figured it out, I was missing the parenthesis


    if ( ! envelope[i].isActive() )
  5. how can I use AudioEffectEnvelope::isActive ??

    I have an array of envelopes, and I want to look through them to find one that is not active. Below is the snippet.
    The error I am getting is
    "cannot convert 'AudioEffectEnvelope::isActive' from...
  6. Super helpful, thanks! What sort of integrated...

    Super helpful, thanks!

    What sort of integrated circuit would produce a purely analog wave? I just do not know much about it.
  7. high level question- commercial 'analog' synths compared to audio library

    I went to the city last week and was chillin at the music stop and I noticed a lot of newer synths like the moog grandmother and the roland SE-02 that were marketed as being analog which confused me....
  8. Thanks for the inspiration. Here is my go, I...

    Thanks for the inspiration.
    Here is my go, I took the shot measuring cap that comes with tincup whisky, cut it down a little, tucked some tin foil in the bottom, and mounted the LED in there. THen...
  9. looking for advice on how to make a chassis cutout glow with LED

    Working on a synth, when I had the laser cutter do all of my switch cut outs I also had them make a little logo. I sometimes book shows as 'Blue Camoose' so I wanted to have a camel/moose hybrid...
  10. Hey folks I got it put together, here is a couple...

    Hey folks I got it put together, here is a couple pics. The orange foot pedals are (at least now) programmed to give me a 5th above or a 4th below the last note played. (how many bass players does...
  11. So it is probably unrealistic to fire solenoids...

    So it is probably unrealistic to fire solenoids just using the power lead on an arduino board? I cant seem to find anyone that has done it before :(
  12. looking for solenoid advice for woodblock metronome project

    Im looking to build a metronome that can do some odd time signatures. I envision the project will reside in a wood shell with a metal panel that has controls mounted on it and two solenoids that hit...
  13. measurement discrepancies when using multiple potentiometers?

    working on a synth build, I wanted to have the ability to quickly choose a different sound or a different octave so I decided I would get potentiometers that have 11 dentants (clicking points). That...
  14. Thanks Micheal. This is really helpful...

    Thanks Micheal.
    This is really helpful (especially after I researched some of these protocols that I do not know much about!) I guess what it comes down to for me is the most likely scenario is...
  15. Board advice for synth project. Does 4.0 make sense?

    I am trying to choose a board for my next synth. For the first one (https://hackaday.io/project/163160-chromatic-button-synth) I just used one of the DAC channels on the 3.6. It is just doing...
  16. best strategy for connecting hook up wires to male 2.54mm pins in a build

    I have a newbie question, please feel free to point me to existing resources. I have been googling for a while and not found what I was looking for.

    I have been building a couple synths. I end up...
  17. I had a morely volume pedal from the 70s that...

    I had a morely volume pedal from the 70s that used a photoresistor instead of a rotary potentiometer. with an incandescent appliance bulb! interesting idea but the dust thing would make calibration...
  18. I was able to do velocity sensitive on the...

    I was able to do velocity sensitive on the hammond. It had a global switch that engaged before the switches on the keys. I hated it just because the difference in the keys felt like I was getting...
  19. organ foot pedal MIDI controller- switch ideas?

    I built a midi controller using a 50s hammond 12 key foot keyboard. However the factory switches used these plastic pushers and after 60 years the plastic is breaking down and many of the switches no...
  20. Im struggling with MIDI volume changes - 10 line code sample attached

    I am having trouble sending volume changes over USB Midi.
    I was expecting this example to play a note (midi 68 = Bb I think) then increase it from a volume of 0 to 127 then cut it out for 2...
  21. I figured this out, I had the chip soldered in...

    I figured this out, I had the chip soldered in facing the wrong direction. I installed a new one and its all good.
    Thanks!
  22. Using PT8211 without the headphone jack

    I assembled a PT8211 and connected to a 3.2 board. I did not install the headphone jack, instead I hookup some some wires to see if I can figure out how to reroute it to a panel-mount 1/4 jack....
  23. OK, I tried some different headphones and I was...

    OK, I tried some different headphones and I was able to isolate the different channels. There must have been something getting summed in the first pair.

    But I am still unable to get anything out...
  24. Hey Paul I caught that also. I fixed it and even...

    Hey Paul I caught that also. I fixed it and even changed the frequency on one of the wave forms. What is happening is
    1) via the embedded headphone jack on the audio shield I get each channel of...
  25. newbie struggling to get stereo synthesis out of audio shield

    Based on my research, I understand that the 0 and 1 channels on a AudioOutputI2S would be the right and left audio output.

    This is a teensy 3.6 board with the audio shield

    However my experiment...
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    I went for the 1.46-beta7, so far so good. ...

    I went for the 1.46-beta7, so far so good. Thanks!!
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    LInux install problems

    I am running a fresh install of Ubuntu studio. I
    1) downloaded an installed the arduino IDE for Linux 64
    2) downloaded the udev rules file and copied it to the rules.d directory
    3) Downloaded...
  28. Yeah I commented out the wait for the Serial to...

    Yeah I commented out the wait for the Serial to hookup, but it still will not work unless I have it hooked up to a computer. I am hoping that I can just use a USB power supply when I am not doing...
  29. Get audio out from a MIDI controller when it is not hooked to a computer?

    My instrument has both MIDI and audio out functionality.

    However the audio out is not working unless it is hooked up to a computer, unless I change the board type to something else then it no...
  30. I think the audio shield would help with my distortion (demo video)

    Here the project you all have been helping me with. Thanks!!! I think I need to upgrade to a board with the audio shield so I do not get the distortion when I am running multiple tones at the same...
  31. polyphonic pitch and/or volume changing

    For my musical instrument I have an analog joystick where I want to put volume on one axis and pitch shift on the other. I think I have it figured out for midi CC messages but not for audio out.

    I...
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    Nevermind, i found it. I had to have separate...

    Nevermind, i found it. I had to have separate channels as the input to the mixer.



    #include <Audio.h>
    #include <Wire.h>

    AudioSynthWaveform waveform1;
    AudioSynthWaveform ...
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    polyphonic code example

    I am experimenting with multiple notes, here is my code example. I would think that it would play one note, then the other note on top of it, then be silent. But when waveform2 starts waveform1...
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    It is for the actual application (not...

    It is for the actual application (not breadboarding), I was planning on soldering the wires from my switch matrix directly to the teensy board im not sure how to do that if I use the audio board and...
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    Lots of great info, much appreciated! Another...

    Lots of great info, much appreciated!

    Another basic thing that I am confused about, the audio board has a pinout and it is not using all of the pins on the teensy. But if you solder it up with...
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    Audio board or no Audio board?

    Greetings,
    I have built a 65 button midi controller and I want to add audio out. I have been checking out the Teensy audio library and there are some basics I am not understanding.
    For my...
  37. Anyone out there want to jump on the amplifier...

    Anyone out there want to jump on the amplifier question? WHat is my best option for getting the mono output from a Teensy3.2 up to line level?
  38. Do I need an external audio shield and/or amplifier to generate notes??

    I have built a MIDI over USB keyboard using the TeensyLC. I also want to add line level audio out for use without a computer. I think I can get by with 8-bit tone.
    My requirements are:
    1)...
  39. foot keyboard controller - board mounting questions

    Newbie here, I did google around and was unable to find what I was looking for but please feel free to point me at old links.

    I am building a MIDI-over-USB foot controller out of an old hammond...
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