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  1. garcho

    USB host cable mounting screws

    Does anyone have information about dimensions and thread regarding the two screws used to mount the USB host cable to panel? This is regarding the cable for sale on PJRC: https://www.pjrc.com/store/cable_usb_host_t36.html Thanks for your time!
  2. garcho

    MIDI clock compatibility device for analog delay unit

    I'm going to paraphrase to see if I understand you correctly: You want the 95000 and Ditto to set the tempo of the ES2 via tap tempo. Tap tempo is just a momentary switch closing to ground (usually), so you want the Teensy to "close" the switch, instead of your foot, to synchronize the 3...
  3. garcho

    Wavefolder possible?

    Thanks for your efforts Mark, I look forward to trying this out, cheers
  4. garcho

    controlling TFT screen with 4.1 - outsource to Mega?

    Mainly, my free pins are shrinking in number because of the Audio Shield, and using encoders. I plan on using shift registers for things like the push buttons, the encoder switches, any LED indicators, that kind of thing. As far as the display, it seems something along the lines of what you...
  5. garcho

    controlling TFT screen with 4.1 - outsource to Mega?

    ^ yeah, I've run in to that before, especially with OLEDs. Decoupling caps helped a lot too. Thanks for the tip
  6. garcho

    yet another midi project, newb

    That description is a bit confusing. But it sort of sounds to me like what you want is a MIDI interface. You want to be able to control a legacy 5 pin DIN MIDI instrument (synth or something?) with the MIDI data from a computer, right? May I ask, why does "saving the file to the Teensy" have to...
  7. garcho

    controlling TFT screen with 4.1 - outsource to Mega?

    Greetings Forumites, I've been programming a digital synthesizer on a Teensy 4.1. There are quite a few parameters the user has control over. I want some of these parameters to be displayed on a screen. There are a few encoders and such, and I'm using the audio shield, so pins are at a premium...
  8. garcho

    Teensy 4.1 and 2.4' TFT tutorial

    remember during your experimenting, that teensy 4.1 is NOT 5V tolerant
  9. garcho

    [MIDI Project] Pairing down number of pots and buttons

    Maybe I'm way off, but are you asking if you can use the same encoders/pots/switches for controlling different parameters? As in, pick a set of controls, and then the HUI adjusts the parameters of that control set. Chose a different control set and the same HUI adjusts different parameters...
  10. garcho

    Simple Way to add Polyphony

    frequency = 2 ^ ((MIDI note number - 69) / 12) * 440
  11. garcho

    Simple Way to add Polyphony

    you could try something like this, it works for me: AudioSynthWaveformSine sine1; //xy=445,148 AudioSynthWaveformSine sine2; //xy=449,226 AudioSynthWaveformSine sine3; //xy=457,312 AudioSynthWaveformSine sine4; //xy=458,400 AudioEffectEnvelope...
  12. garcho

    Possible to use AudioEffectEnvelope with analogWrite()?

    I'm a noob, and I haven't tried it myself, so this is just a random suggestion, but perhaps in the audio system design tool, you could do something like: DC => ENVELOPE => PWM One encoder could do ADSR (or even DAHDSR), cycle through with the built in push button. On the thing i'm working on...
  13. garcho

    8 MIDI outs, hardware

    works like a charm and made wiring a breeze, thanks again y'all
  14. garcho

    8 MIDI outs, hardware

    I did indeed get the correct ICs. Thanks much for the advice, and thank you Mark for untying my tongue!
  15. garcho

    8 MIDI outs, hardware

    Thanks for the suggestions y'all, I ordered some '541s. So, as long as OE1 and OE2 are held to ground, all inputs will be non-inverting buffers?
  16. garcho

    8 MIDI outs, hardware

    "I'd use 74HCT244 as an octal buffer" I'm not familiar with those. Would it be something like this: I am assuming I should not connect the Teensy pins directly to the buffer. What value of resistor should I use between the Teensy and the 74HCT244? After that it's just a matter of 220Ω to the...
  17. garcho

    8 MIDI outs, hardware

    I have a MIDI master clock ready to be built but for the final few pieces of the puzzle. If I have 8 UART outputs going to 8 MIDI jacks, should I buffer each with a pair of inverters? Or will a 47Ω resistor in series with each TX pin be sufficient protection for the Teensy? This is a one-off...
  18. garcho

    MIDI Master Clock and Transport

    Wow! Thank you for your time and very informative replies! Like I said, I can't yet hear anything "off", though it's only on a breadboard and needs to be built properly and played with for a while to know for sure. Any thoughts on a different way to have MIDI clock messages sent to multiple...
  19. garcho

    MIDI Master Clock and Transport

    If I have one interrupt for all 8 UARTs, and each one sends a MIDI clock message one after the other like it's written in the code, then am I right in assuming the delay between UART 1 and UART 8 would only be 13ns? (1/600,000,000)*8
  20. garcho

    MIDI Master Clock and Transport

    So, I made the buttons in the loop set flags to true/false, then the interrupt counts clock messages and the start or stop is triggered by % 24 (or 12, 48, 96 etc.) and reading the flag. I'll post the finished code for the whole project once it's built, works properly, and I clean up the code.
  21. garcho

    MIDI Master Clock and Transport

    I want to make a MIDI master clock to sync a number of devices to one tempo and control their individual start/stop functions. I only have 2 arms to start or stop more than 2 devices, and I don't want to have one sequencer start or stop the entire MIDI chain. So what I envision is to dial in a...
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