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  1. [Teensy 4.1] Custom Teensy Board Questions

    I am thinking of making a custom board for a device that will only need flashed once, during production. I wanted to check to make sure I'm thinking correctly about the process, could anyone with...
  2. This is the first thing I would check. Someone...

    This is the first thing I would check. Someone else was having the issue they could .begin(), but couldn't .open() anything. Quote from Paul on this thread:
  3. Good point! It was my first project so the...

    Good point! It was my first project so the details are a little fuzzy, but thinking about it I see what you mean. Either I wasn't using an opto and had it directly wired reversed, or the wiring issue...
  4. EDIT: Check your wiring, I had some MIDI wired...

    EDIT: Check your wiring, I had some MIDI wired wrong on my first project and was receiving my highs/lows backwards. Which resulting in midi messages, just not the ones I wanted. After typing the...
  5. I figured out that the USB Host library is...

    I figured out that the USB Host library is working for me as well. Synths with a single USB MIDI connection work completely as expected. But synths that have multiple connections available over USB...
  6. Okay, I've made some progress figuring out the...

    Okay, I've made some progress figuring out the issue! But it leads a little further down the rabbit hole.

    My MIDI equipment is a Korg NTS-1, a Korg Monologue, and a Korg Minilogue. I have figured...
  7. Hey there, So the optocoupler is easy to...

    Hey there,

    So the optocoupler is easy to explain, so I'll start with that first. Setups will work without one, however they offer protection and circuit isolation between your devices. When you...
  8. This is the simplest code I've been able to come...

    This is the simplest code I've been able to come up with to test sending out MIDI notes over the USB Host. From what I gather both functions should be valid to start and to stop notes:



    ...
  9. Unable to send notes to USB Hosts, but can receive just fine.

    Happy Thanksgiving!

    I'm running a MIDI router that cross-talks between DIN ports, USB to PC, and a USB Host. Everything works great, I can filter messages, and send messages any direction from any...
  10. I used to have problems trying to use the MIDIUSB...

    I used to have problems trying to use the MIDIUSB library and ended up not using it anymore. Now all I do is select MIDI as the usb type in the programming options pulldown before flashing the teensy...
  11. To answer your first question, I'm having really...

    To answer your first question, I'm having really good luck using a teensy 4.0 as a usb host for MIDI. Using it to crosstalk between a bunch of USB, USB host, TRS and DIN ports. Getting down to the...
  12. defragster, Thank you very much, I had played...

    defragster,

    Thank you very much, I had played with the detection threshold a bit when I first started but it wasn't having much of an effect. Now that I lowered the AUDIO_GUITARTUNER_BLOCKS it is...
  13. I realized the problem editing analyze_notefreq.h...

    I realized the problem editing analyze_notefreq.h in the Audio library, the library is in two locations (install dir and sketchbook dir in documents) and the program was choosing the unedited library...
  14. Your unwanted audio issues remind me of a couple...

    Your unwanted audio issues remind me of a couple things. I was getting unwanted noise when no sound was playing, until I used the method:


    sgtl5000_1.adcHighPassFilterDisable();
    after...
  15. I had a general midi sound board (send midi in,...

    I had a general midi sound board (send midi in, get basic instrument sounds out) hooked up to a little sparkfun audio amplifier. They shared a 5v power source and I had a similar situation to you,...
  16. Running AudioAnalyzeNoteFrequency as quickly as possible

    Hello,

    I've done some digging to get .reads of AudioAnalyzeNoteFrequency to happen as quickly as possible and have been trying different things, including from this thread:...
  17. As an aside, even when using a hardware input to...

    As an aside, even when using a hardware input to successfully collect the MIDI in, the software serial library I'm using isn't outputting the MIDI over software serial with the code I included in the...
  18. I'm actually using a 4.0, I forgot to include...

    I'm actually using a 4.0, I forgot to include that. But, I wanted to be able to be able to include more ports eventually than there are hardware pins. I think the teensy night actually run fast...
  19. Unable to bit-bang SoftwareSerial MIDI DIN pins

    Hey there!

    I'm having trouble making software serial MIDI connections. I have everything wired up and it works flawlessly on true Serial1-SerialX pins, but when I try to implement the software...
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    Teensy USB Midi on ATMEGA32U4

    Hey Paul!

    I'm loving your USB library so much that now that I have a project that I'm working with a Pro Micro Arduino (with a native USB chip) I really really miss it. The fact that it works the...
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    I've switched over to using a USB cable section...

    I've switched over to using a USB cable section and in the process realized there was issues with my wiring, I either had a bad example or was too tired and wired wrong. I've got everything hooked up...
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    Uncommenting that line (both with the previous...

    Uncommenting that line (both with the previous line uncommented or commented out) produces the compiling error:


    C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\USBHost_t36\ehci.cpp:...
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    Correct, 5v rail's GND is connected to power...

    Correct, 5v rail's GND is connected to power supply, Teensy, and the new USB. Probably not the best picture, but the 5v rail is the top one, USB port is at the top left, yellow wire is D- and orange...
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    Teensy 4.0 USB Host Issues

    Hey there!

    I've been working on making a MIDI hub and things have been going really well so far. I've got the Teensy talking to PC through USB, and a bunch of incoming and outgoing DIN ports all...
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