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  1. On the latest version of my TeensyMIDIPolySynth...

    On the latest version of my TeensyMIDIPolySynth project, simply selecting "Smallest Code" optimization (initially selected because code was exceeding available space) also reduced the RAM usage on my...
  2. Here's a

    Here's a <link to the thread> where EEPROM writes were previously not working for T4. You might try the test program from that thread on your LC to see if it helps to reproduce the problem easily,...
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    Jonathan: I would think that one obvious...

    Jonathan:



    I would think that one obvious approach would be to add another dimension to the envs array (logical), rather than just mutiplying the number of envs (very confusing !!) when...
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    @ALDad: Posting your modified sketch (see...

    @ALDad:

    Posting your modified sketch (see Forum Rule above) would make it much easier for anyone else to analyze why it might not be working as you expect.

    So, without benefit of the modified...
  5. @zapta: Check

    @zapta:

    Check <this thread> to see if it answers the same question that you are asking . . .

    Mark J Culross
    KD5RXT
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    @nobody3: Do you know if the CP750 is expecting...

    @nobody3: Do you know if the CP750 is expecting CR, LF, or CR/LF at the end of the serial stream ?? Which these different options for line termination have you tried ??

    Mark J Culross
    KD5RXT
  7. The two added wires are +5VDC & GND directly...

    The two added wires are +5VDC & GND directly between the PowerBoost 1000C & the display (as indicated in my earlier post, this was an attempt to rule out the very thin traces on the PCB, jut in case...
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    Useful commands to get network info on/from a RPi

    For the RPi (& most other linux devices), simply typing "ifconfig" without the quotes in a terminal window will show you lots of network interface information (if you get a "not found" error, try...
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    If I understand your question correctly, the...

    If I understand your question correctly, the short answer is as follows:

    IPAddress ip( [ whatever IP address that you want your Teensy to respond to / act as on your network ] );
    IPAddress myDns(...
  10. Kurt: Thank you . . . all great suggestions. ...

    Kurt:

    Thank you . . . all great suggestions. I am moving the modules (Teensy, Audio Adapter, PowerBoost 100C, & RA8875 display) between the wired prototype & the PCB (both boards are socketed). ...
  11. Kurt: Thank you for your reply. When I...

    Kurt:

    Thank you for your reply. When I started this effort to transition from the ILI9341 to a larger display, I read the detailed thread from when the RA8875 library was being optimized for the...
  12. Need help troubleshooting RA8875 which works in a wired prototype, but not in PCB

    Particulars:
    Arduino IDE Configuration (last built with Arduino 1.8.13 + Teensyduino 1.54-beta7):
    Tools/Board: "Teensy 4.1"
    Tools/USB Type: "Serial + MIDI"
    Tools/CPU Speed: "600MHz"...
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    It's been awhile since I've done much of anything...

    It's been awhile since I've done much of anything with the Teensy & ethernet (too busy playing with my TeensyMIDIPolySynth synthesizer !!), but <here's> a reference that shows how to read the MAC...
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    From the NativeEthernet example...

    From the NativeEthernet example "AdvancedChatServer":


    #include <SPI.h>
    #include <NativeEthernet.h>

    // Enter a MAC address and IP address for your controller below.
    // The IP address will be...
  15. A simpler countdown timer

    @Bastiaan:

    I would suggest a major simplification. Note that I am not somewhere where I can actually test this on a Teensy, so this is all "conceptual" off the top of my head. Normally, I don't...
  16. @Muiota: That's exactly the tone sound that I...

    @Muiota:

    That's exactly the tone sound that I was getting in my updated TeensyMIDIPolySynth. The fix that Frank B pointed out in P#21 (included in Teensyduino 1.54b7) successfully fixed the...
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    Disconnect everything except the Teensy & the Audio Adapter - nothing else !!

    Again, did you *remove* all other *hardware* connections ?? Just "unassigning pins" is a *software* function & does not remove any potential *hardware* conflicts.

    Please understand that I'm not...
  18. @djex81: The third parameter that you are...

    @djex81:

    The third parameter that you are passing into the MIDI_CREATE_INSTANCE(HardwareSerial, Serial1, MIDI) macro specifies & holds the return of your default MIDI object name, which can...
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    NM . . . bad stuff posted earler . . . Mark J...

    NM . . . bad stuff posted earler . . .

    Mark J Culross
    KD5RXT
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    Includes for the different devices: #include...

    Includes for the different devices:


    #include <USBHost_t36.h>
    #include <MIDI.h>


    Declaring the different devices (I threw the hub in there just in case I decided to connect a USB hub on the...
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    I think the short answer is yes. Other than...

    I think the short answer is yes. Other than declaring the use of the specific devices (usb, usbhost, midi) & making calls using the specific device names [usb.sendNoteOn(), usbhost.sendNoteOn(),...
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    @DeMoeP: Did you try connecting *only* the...

    @DeMoeP:

    Did you try connecting *only* the Teensy & the Audio Adapter together - with absolutely no other hardware ?? Running the WaveFilePlayer code with that simple setup would be a useful...
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    @blakeAlbion: I am not familiar with the...

    @blakeAlbion:

    I am not familiar with the specific piece of equipment that you called out (Waldorf Blofeld), but maybe if I describe how portions of my updated TeensyMIDIPolySynth have been...
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    @CoreyCoop: My evidence is only...

    @CoreyCoop:

    My evidence is only circumstantial, but after adding the fix to startup.c manually (to remedy freezes on the latest version of my TeensyMIDIPolySynth that I'm tinkering with), I have...
  25. You did not show your wiring, but from your code,...

    You did not show your wiring, but from your code, Im going to assume that you have the 5 buttons wired to pins 0-4 & the 5 LEDs wired to pins 5-9.

    I did not load your sketch into a Teensy, nor did...
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    I missed those !! Obviously hidden right in...

    I missed those !! Obviously hidden right in plain sight !!

    Mark J Culross
    KD5RXT
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    Doesn't look like MicroMod has any hardware debug...

    Doesn't look like MicroMod has any hardware debug capability available in their pin defiitions.

    Mark J Culross
    KD5RXT
  28. @Iain: The change that I suggested is not...

    @Iain:

    The change that I suggested is not specific either to Teensy, nor to USB MIDI. The switch statement (as originally written) uses the current value of the "state" variable to decide what to...
  29. Iain: Welcome to the forum !! One quick way...

    Iain:

    Welcome to the forum !! One quick way to make it so that your sketch only sends the CC message when a button press is detected would be to add the following lines (highlighted in RED):

    ...
  30. I am not familiar with that particular adafruit...

    I am not familiar with that particular adafruit product, but is appears to be a battery charger only . . . it does not provide a regulated DC output for powering devices like the Powerboost 1000C. ...
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    Good for a chuckle . . . but still probably...

    Good for a chuckle . . . but still probably better than "passive breaking" or even "inactive breaking"!!

    Mark J Culross
    KD5RXT

    P.S. Paul: sorry for polluting this thread !! MJC
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    "soolder"

    On the <Audio Adapter> page, under the first picture, it says "Two of these 14x1 pins can be used to easily soolder the Teensy 3.x and audio board together."
  33. @Jeroen: The Teensy 4.0 is not 5V tolerant, so...

    @Jeroen:

    The Teensy 4.0 is not 5V tolerant, so running the display from a higher voltage than the Teensy runs the real risk of damage to the Teensy. Much better to run both from the same supply,...
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    In case anyone in the future stumbles across my...

    In case anyone in the future stumbles across my earlier question & is having the same problem, the solution to getting the resistive touchscreen to work just like the capacitive touchscreen did for...
  35. @Jeroen: If it works for your project, I would...

    @Jeroen:

    If it works for your project, I would recommend that you look into the Adafruit <2500 mAh battery>+ Adafruit <Powerboost 1000>. With this combo, the updated version of my...
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    @Maes2ro: I have not created any actual...

    @Maes2ro:

    I have not created any actual projects with the Ethernet stuff yet (it's on my "playlist", but has not quite bubbled to the top), but my quick read seems to concur that you have to add...
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    @Maes2ro: Maybe this

    @Maes2ro:

    Maybe this <thread> . . . hope that helps !!

    Mark J Culross
    KD5RXT
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    Having trouble w/ RA8875 (TFTM070-5) w/ resistive touch panel

    Particulars:
    Arduino IDE Configuration (last built with Arduino 1.8.13 + Teensyduino 1.54-beta7):
    Tools/Board: "Teensy 4.1"
    Tools/USB Type: "Serial + MIDI"
    Tools/CPU...
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    @M4ngu: If I am understanding correctly what...

    @M4ngu:

    If I am understanding correctly what you are after, here's a short sketch to demonstrate an approach that I believe matches what you are needing. You will create an array containing the...
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    Ahsan: As Frank B said, a brand new Teensy is...

    Ahsan:

    As Frank B said, a brand new Teensy is setup as a RAWHID device (no serial port), so you will need to program it the very first time using the button. It isn't clear from your description...
  41. Yes, USBHost_t36 works very well on a Teensy 4.1....

    Yes, USBHost_t36 works very well on a Teensy 4.1. I have used it in the original version of my TeensyMIDIPolySynth (hardware pots, switches, pushbuttons, & LEDs), as well as in the enhanced version...
  42. How much delay did you have to add ?? Maybe you...

    How much delay did you have to add ?? Maybe you could try just reading one switch each time thru the loop & use millis() instead of delay() to tell you when it is time to read the next switch. Use...
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    I can confirm that the freeze in my updated...

    I can confirm that the freeze in my updated TeensyMIDIPolySynth (both the full version & the pared down version) no longer occurs after making Frank B's code change (as posted/clarified by...
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    UdoZ / WMXZ / Frank B / Paul: I have also been...

    UdoZ / WMXZ / Frank B / Paul:

    I have also been seeing a "temporary freeze" in the current version of my TeensyMIDIPolySynth that I have mostly converted from hardware control (pots / switches /...
  45. May have identified one cause . . .

    @KurtE:

    Thanks again for your continued testing. I finally found time for my own further testing (by combining my small test program with the simple code in some of the RA8875 Examples), & in...
  46. @KurtE: Thanks for your reply !! I should...

    @KurtE:

    Thanks for your reply !! I should have noted that I'm running Arduino 1.8.13 + Teensyduino 1.54-b7 under Win10pro 64-bit. The RA8875 library is in "C:\Program Files...
  47. First character written to RA8875 after startup is not printed to the screen

    I'm working on an enhancement to my TeensyMIDIPolySynth which now uses the RA8875 TFT (ER-TFTM070-5) for the all-digital (no more pots / switches / buttons / LEDs !!) user interface. I am having...
  48. @RichardFerraro: Going on the assumption that...

    @RichardFerraro:

    Going on the assumption that the RTS/CTS convention is being used/followed (RTS as an output & CTS as an input), you should connect pin 19 (RTS) on each Teensy to pin 18 (CTS) on...
  49. Glad I could help in a small way. Pete & others...

    Glad I could help in a small way. Pete & others kindly helped me when I first got started with Teensy, so I try to pay my appreciation forward to others in a similar way whenever I can.

    Mark J...
  50. LikeToBuildStuff: Dang it !! Sorry, I wasn't...

    LikeToBuildStuff:

    Dang it !! Sorry, I wasn't at my primary PC when I typed my first reply. I'll use the excuse that I'm old & something else, but I'm having trouble remembering what the other...
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