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  1. ETMoody3

    Arduino CLI And IDE now Released - Teensy Supported!

    I downloaded 2.0 on an old notebook running MX linux and gave it a thorough tryout using 1.57. No issues with anything I tried. Surprisingly good performance considering that the machine is really obsolete.
  2. ETMoody3

    Raspberry PI Raspbian 64Bit OS support ?

    I have Arduino 1.8.19 and Teensyduino 1.56 running on "raspian" 64 ( raspberry pi os 64 bit ) on a 8gb RPI 4 ...and while I haven't done much heavy lifting with it, it does seem to work fine. As Kurt says grab the ARM64 / AARCH64 - Jetson TX2 versions
  3. ETMoody3

    Two of the same Teensy "MIDI" devices on Windows at the same time (BUG?)

    Yeah, I dunno. I have one device that's Teensy 3.6 based, MIDI x 16 and another that is Teensy 4.0 based MIDI x 4 and the program I'm using ( gig performer 4 ) gives them both the same device name. It might be noteworthy that the name given is arbitrarily chosen from the two devices... likely...
  4. ETMoody3

    Shepard/Barberpole infinite phaser for Teensy4

    Oh, I like this a lot.
  5. ETMoody3

    PCM5012 I2S DAC with Teensy 4.1

    I've got a bunch of these and they work fine for me with several different microcontrollers. Note on top of the card right by the silkscreen of SCK there is a pair of pads. Bridging them with solder connects SCK to ground. This card has * 2 * low dropout converters, you must power the card...
  6. ETMoody3

    MIDI Clock in.

    Here's more about callbacks: https://github.com/FortySevenEffects/arduino_midi_library/wiki/Using-Callbacks
  7. ETMoody3

    MIDI Clock in.

    Try using the callback MIDI.setHandleClock(doSomethingAtClock); void doSomethingAtClock() { //your secret sauce here }
  8. ETMoody3

    Maximum signal level on audio inputs.

    You can set this with a function in the SGTL5000 control code.
  9. ETMoody3

    Issues with Teensy 4.1

    Well, this is a highly available and common encoder breakout. It may not be what you are using. Some encoders I use only attach to the data pins and ground. This one asks for a supply, ground, and then gives data pins. I use these with 3.3 v on a lot of projects. Powered with 5 volts...
  10. ETMoody3

    Issues with Teensy 4.1

    The encoders might well have been the source of trouble. As for them not damaging it right away... that doesn't seem intuitive. At this point, I'll draw back and see if anyone else has any input in that regard. However out of curiosity I'm going to set up a common encoder with 5v and...
  11. ETMoody3

    Issues with Teensy 4.1

    If those pro minis were 5 volt... they would have introduced 5 volts directly to the Teensy pins.
  12. ETMoody3

    Issues with Teensy 4.1

    But to answer your question yes there are ways to electrically isolate usb devices from the host computer that provide power via an external source. Again, the Jetson is a 5 volt system - I have one - and it seems highly unlikely it was a source of lethal voltage. Search for "ADUM3160 usb...
  13. ETMoody3

    Issues with Teensy 4.1

    I seriously doubt the Jetson over powered the usb system if it still works. You haven't told us what, if any, other things are attached to the Teensy that might have failed and shorted out the 3.3v supply.
  14. ETMoody3

    Issues with Teensy 4.1

    This might also be an issue with USB power management on the hosting computer, but without more information the only thing anyone can do is randomly guess.
  15. ETMoody3

    Teesny audio over UDP

    My personal experience as a musician is that anything over 30 ms latency gets annoying, under 30 ms ranges from acceptable to undetectable depending on context.
  16. ETMoody3

    Teensy 4.1 MIDI iN using 6N138 5V or 3.3V

    As far as I know No, the 6N138 does not work at 3.3 v. Look at the Adafruit midi feather wing which operates directly with 3.3v logic or consider a suitable logic level shifter like TXS0108E https://www.adafruit.com/product/4740 Alternative is to use this schematic which powers the 6N138 at...
  17. ETMoody3

    @Kurt: USB_HOST (T4.1) Serial, hardware handshake

    This has intriguing potential
  18. ETMoody3

    changing pitch of audio samples - TeensyVariablePlayback library

    I see you have a mathematical method of matching a midi note to a specific playback rate. My math-fu isn't that strong but I knew it was possible. Such solutions come to me better when my consciousness is out of the way, like asleep or under heavy caffeination. :) I went the long way...
  19. ETMoody3

    changing pitch of audio samples - TeensyVariablePlayback library

    Updated, thank you. I've lowered the number of streams in my project to 6 leaving overhead for filters + stuff. Works well.
  20. ETMoody3

    changing pitch of audio samples - TeensyVariablePlayback library

    8 streams appear to use 70-90% cpu on the T4.1 so I'd say that's a theoretical limit.
  21. ETMoody3

    Teensyduino 1.54 Released

    Seems okay on Raspberry Pi
  22. ETMoody3

    changing pitch of audio samples - TeensyVariablePlayback library

    Okay, 8 instances of the same file at once at different playback rates... which is so cacophonous I can't really tell how well it's working. I don't hear any distinct digital errors, no popping or ugly distortion. I'm impressed.
  23. ETMoody3

    changing pitch of audio samples - TeensyVariablePlayback library

    So far so good, I've got 4 streams playing the same file at different speeds, without any glitches or errors. I'm using a teensy 4.1, SD card and a UDA1334 dac. Not sure what the theoretical maximum is but Ill report what I learn. I am getting a non critical stop compiler error regarding...
  24. ETMoody3

    changing pitch of audio samples - TeensyVariablePlayback library

    Bookmarked! I look forward to exploring it.
  25. ETMoody3

    MIDI Out as also MIDI Thru?

    https://fortyseveneffects.github.io/arduino_midi_library/a00039.html Here's the documentation. Read the whole thing...you'll thank yourself later.
  26. ETMoody3

    Using a "real" microphone?

    The mic input on the audio shield isn't just an audio input, there's a biasing source.
  27. ETMoody3

    Using a "real" microphone?

    The mic input on the teensy audio shield is designed to allow easy use of common electret condenser capsules.
  28. ETMoody3

    MIDI Out as also MIDI Thru?

    The MIDI library does a THRU from input to the output by default. You have to shut it off if not needed, or attach the function to a switch or soft control.
  29. ETMoody3

    Using a "real" microphone?

    The chip in the "5$ preamp" is more like $7 but it's still a great circuit.
  30. ETMoody3

    Calf plugins on teensy

    I've used these plug-ins. The sound is up to par with commercial software but the GUI is horribly resource intensive. I'd certainly give it a try if the code were ported to run on external hardware ( i.e. Teensy 4 ) without that GUI overhead. It's more than my brain will wrap around, though.
  31. ETMoody3

    Iconic vintage synths with Teensy?

    After seeing the MicroDexed code, I have given serious thought to porting the Bristol engine to Teensy 4 / 4.1 https://sourceforge.net/projects/bristol/ Admittedly this is a bit beyond my skill set, I simply feel encouraged after seeing the work done to port the Dexed engine to a microcontroller
  32. ETMoody3

    Teensy 4 with Audio Sheild Makes Noise

    There has to be an output circuit of some sort in order to hear anything.
  33. ETMoody3

    Teensy 4 with Audio Sheild Makes Noise

    Too many possibilities to enumerate. We have no way of knowing from your question how you have your project wired, the extent of possible ground loops, and many other factors. Even an external power bank won't eliminate ground loops coming from audio connections. This is why my suggestion...
  34. ETMoody3

    Teensy 4 with Audio Sheild Makes Noise

    Try isolating transformers? Like these EI14 https://www.amazon.com/dp/B075465YFV/ref=cm_sw_em_r_mt_dp_6GvRFbATQM7FF?_encoding=UTF8&psc=1
  35. ETMoody3

    Teensy 4.0: Sending MIDI through USB

    fwiw here's what the usbHostt36 debug print has to say with only one of those hubs plugged in USB Host Testing sizeof Device = 36 sizeof Pipe = 96 sizeof Transfer = 64 power up USBHS PHY reset waited 5 USBHS_ASYNCLISTADDR = 0 USBHS_PERIODICLISTBASE = 1FFF5000 periodictable = 1FFF5000 port...
  36. ETMoody3

    Teensy 4.0: Sending MIDI through USB

    Yikes. I have two of those *useless* units. They backfeed the host, and behave erratically. Device ID 05e3: 0606 Genesys logic I can run the usbHost debug on it, or any other useful test or probe etc...
  37. ETMoody3

    Ground Loop behavior: Teensy Audio board vs Adafruit AudioFx

    I use a USB ground isolator. Many available, usually based on an Analog Devices ADUM4160 chip or one of its family. I also give each project a good solid ground plane of sheet copper.
  38. ETMoody3

    A DX7 (Fm synthesis) replacement with Dexed on a Teensy

    Thanks! It sounds like it should. To me it's a bit more Synclavier than DX7 and there's *nothing* wrong with that. There's roughly 3000 patches in that sd card, which is delightful fun. ( some slots are blank / init sound ) Yes, sure give me a bit and I'll put something up on youtwab.
  39. ETMoody3

    A DX7 (Fm synthesis) replacement with Dexed on a Teensy

    Done! Again, nice work, Holger!
  40. ETMoody3

    A DX7 (Fm synthesis) replacement with Dexed on a Teensy

    So far so good, nice work! If I run across any *real* problems I'll let you know.
  41. ETMoody3

    A DX7 (Fm synthesis) replacement with Dexed on a Teensy

    Gah! Nevermind, I forgot to use the pin 27 enable! * embarrassed * It works, thanks for your time.
  42. ETMoody3

    A DX7 (Fm synthesis) replacement with Dexed on a Teensy

    I used the most recent code on your codeburg repo. Yes, compiled with serial+MIDI+audio, and that all works. I refer to usb host that lets the device directly receive a usb midi keyboard. This appears to be supported on T3.6 but it doesn't work on T4 with hardware that does work with the...
  43. ETMoody3

    A DX7 (Fm synthesis) replacement with Dexed on a Teensy

    Is the usb host function shut down when teensy 4 is used? I have Blacketter's breakout and usb host cards on a t4, running your code successfully but the usb host doesn't seem to work. It worked with usb host example code, so I know the host card is good.
  44. ETMoody3

    How to read an EXTMEM array within an audio object

    Hmmm. I modified the idea in this thread to use EXTMEM ( scroll down in the thread for audio object files and example code that the snippet below is excerpted and modified from ) https://forum.pjrc.com/threads/62739-Audio-Effect-Delay-Pops-amp-Clicks-when-changing-tap-times I increased the...
  45. ETMoody3

    Audio Effect Delay Pops & Clicks when changing tap times

    Nice. I just put the delay array in external PSRAM on a Teensy4.1. EXTMEM int16_t sample_delay_line[DELAY_MAX_LEN] = {}; Useful. Thank you
  46. ETMoody3

    Audio Effect Delay Pops & Clicks when changing tap times

    I'd be interested in trying this, thanks in advance for your effort
  47. ETMoody3

    [posted] Capacitance touch midi 'key-tar'

    Teensy receiver code written and tested! It has been uploaded to github and the documentation updated.
  48. ETMoody3

    [posted] Capacitance touch midi 'key-tar'

    Whoops, forgot one important thing about the mega2560 on the receiver. It has to be a board with an Atmel chip for the usb DFU, and you need to grab a mocolufa firmware for it. I can't seem to find that hex file, but you can generate one at https://moco-lufa-web-client.herokuapp.com/#/ Of...
  49. ETMoody3

    [posted] Capacitance touch midi 'key-tar'

    Receiver, soon to be rebuilt with a Teensy 3.6:
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