Forum Rule: Always post complete source code & details to reproduce any issue!

Search:

Type: Posts; User: MatrixRat

Page 1 of 5 1 2 3 4

Search: Search took 0.01 seconds.

  1. Thank you Defragster. @Moris526, in the...

    Thank you Defragster.

    @Moris526, in the Multirellis example's void setup() we have this:-

    void setup() {
    Serial.begin(9600);
    //while(!Serial);

    if(!trellis.begin()){
    ...
  2. Any digital pin should be Ok. for Int. Not using...

    Any digital pin should be Ok. for Int. Not using Int here, only using 4x Neotrellis configured as 8x8.

    I found this:-

    https://www.state-of-the-art.io/projects/matrix-midi-controller/

    Using...
  3. Have you tried an external pullup resistor to...

    Have you tried an external pullup resistor to +3.3v on the interrupt pin? Suggesting 2k2.

    Are you using the latest SeeSaw library? Was updated a few months ago.
  4. A good pic of your setup and some idea of what...

    A good pic of your setup and some idea of what you are trying to achieve might be helpful.

    My setup uses a 15v wallwart and a 2.1 Amp 5v switchmode supply and a brownout can derail the Neotrellis...
  5. delay(2); //Is missing } // and more...

    delay(2); //Is missing
    } // and more importantly, loop() needs this closing brace

    I'm using some Neotrellis as a controller for a Synth controller.
  6. Replies
    269
    Views
    7,474

    @Frank B. I'm far from being any expert but...

    @Frank B. I'm far from being any expert but reading through the two links in post #253, quoting the last entry:-



    Curious if sending serial data in 4Kb blocks is worth playing with as a...
  7. Just wired up a Neotrellis to a T4 and using the...

    Just wired up a Neotrellis to a T4 and using the above sketch get the same result so I did this :-

    void loop() {
    if(!digitalRead(INT_PIN)){
    trellis.read(false); //This line is in the...
  8. Replies
    8
    Views
    476

    Not seen this? ...

    Not seen this?

    https://forum.pjrc.com/threads/68216-No-frills-console-on-LCD-TFT-displays
  9. Got it! playing around with the Multi example...

    Got it! playing around with the Multi example have sliders on two screens.
    Now for a general programming question wrt inits.
    In the Multi example we have this bit:-

    // initialize sliders
    ...
  10. Ok, the penny dropped thank you Kris, now back to...

    Ok, the penny dropped thank you Kris, now back to the breadboard..
  11. @KrisKasprzak -- Updating, >6k lines of working...

    @KrisKasprzak -- Updating, >6k lines of working code now have full two-way Sysex comms with Roland JV-1080, mapped to two rows of 296 SliderElements. Time for some fresh dedicated hardware to free up...
  12. Thread: Goodbye

    by MatrixRat
    Replies
    14
    Views
    1,714

    @Frank, noted some frustration in recent posts,...

    @Frank, noted some frustration in recent posts, pondering.. Teensy would not be what it is without your valued input, thank you for your hard work.
  13. Replies
    13
    Views
    1,220

    Last summer had a similar situation with a T4.0...

    Last summer had a similar situation with a T4.0 screwed into a box with 8x8 NeoTrellis and no accesss to the Prog button. All leds are lit but I've capped the max brightness to about 15% however the...
  14. Replies
    2
    Views
    320

    If the buttons are SPDT then this might be worth...

    If the buttons are SPDT then this might be worth looking at.

    https://www.eejournal.com/article/ultimate-guide-to-switch-debounce-part-5/
  15. So just thinking of the control side, say you use...

    So just thinking of the control side, say you use enough analog switch elements (74hct4016) and wire one across each Kurzweil button and drive each one via some in-house sysex over a unique Din Midi...
  16. Being a Roland JV/XV nut, I totally get why you...

    Being a Roland JV/XV nut, I totally get why you would want to do this. How about a set of proxy buttons controllable via Midi and use a camera looking at the Kurzweil's display as a source for visual...
  17. Replies
    4
    Views
    544

    Played around with usb_desc.h and boards.txt to...

    Played around with usb_desc.h and boards.txt to create MIDIx2 and MIDIx8 using PJRC's VID and PID.

    Later, added a MIDI, x2, x4, x8 and x16 using some other VID and PID. Ended up seriously breaking...
  18. The Midi library instantiates with Thru turned on...

    The Midi library instantiates with Thru turned on by default so you need to turn it off with:-


    void setup() {
    MidiTeensyB.setHandleNoteOn(noteOnHandler);
    ...
  19. Been working on a setup using a T3.2 with a PJRC...

    Been working on a setup using a T3.2 with a PJRC ILI9341 and a T4 with 4x Adafruit Neotrellis, communicating with the T3.2 via serial. Powered via a 15v wallwart followed by a 5V@2.1 amp switchmode....
  20. Try here for pogo pins:- https://www.mill-max.com/

    Try here for pogo pins:- https://www.mill-max.com/
  21. Today's pic, everything works, no artefacts. ...

    Today's pic, everything works, no artefacts.

    24952

    Never figured where the bottom ticks went, just how to put them there.

    Ditched the idea of a horizontal uppercase Y cursor for now at least...
  22. Oops, PEBCAK typo, sorry. Just climbed out of...

    Oops, PEBCAK typo, sorry.

    Just climbed out of the ILI_t3_Controls lib rabbithole with a pic speaking of 2k+ lines of code.

    24925
    The cursor colors were first separated from the handle color...
  23. Need to add */ at line 34 of...

    Need to add */ at line 34 of ILI9341_t3_Controls.h to shut the compiler complaints up.

    Been busy down the Touch rabbithole.

    Utouch although has excellent oversampling gives spurious touch...
  24. Replies
    8
    Views
    702

    Switchmode power supplies can have poor noise...

    Switchmode power supplies can have poor noise figure when lightly loaded and worse if input is noisy. Generally a load of around 20% of the rated capacity shuts them up considerably. Try loading it...
  25. As far as color seletion goes, have built a...

    As far as color seletion goes, have built a HSV-based approach which provides 16 colors and 16 levels each of Saturation and Value which works well with the display. Colors are chosen with eg. Ox0FF...
  26. Thank you again Kris. Here's the current action:...

    Thank you again Kris. Here's the current action:

    24452

    Horiz slider indicates that we're looking at Block 2 of 10. Now that individual item color selection is working, next is to play with how...
  27. Playing around with a Horizontal slider and...

    Playing around with a Horizontal slider and discovered that Snap doesn't seem to work and while setting up this example code found artefacts to do with handleShape(5) - only.


    24441

    And the...
  28. Replies
    13
    Views
    987

    From memory, I think the 6N137's EN pin needs to...

    From memory, I think the 6N137's EN pin needs to be pulled to 0v.
  29. Got it working, not without a struggle. The...

    Got it working, not without a struggle. The latest lib tweak cleaned up loads of bits and pieces but did not evict the PacMan effect so played with Round of different sizes and discovered that if you...
  30. Basically, playing around with MIDI stuff. Built...

    Basically, playing around with MIDI stuff. Built a few controllers with pots, love 'em or otherwise, and then encoders, flying blind with no knob pointer... want something to remember and show where...
  31. Got the Multi-Screen example working, encoder...

    Got the Multi-Screen example working, encoder trails gone.

    Have adjusted the foundations of my project to use the new library tho have the devil of finer detail namely getting the array system...
  32. @KrisKasprzak, just grabbed it thank you.

    @KrisKasprzak, just grabbed it thank you.
  33. Was just gonna post about handle droppings and...

    Was just gonna post about handle droppings and 1200 lines of code. Have created an array setup of 8 pages of 16 slider elements enabling ILI9431_t3_controls and 16 encoders to scroll thru the lot....
  34. Replies
    6
    Views
    417

    Windows uses it's standard USB-MIDI driver to see...

    Windows uses it's standard USB-MIDI driver to see the Teensy which is single-client so you can only make ONE connection to it.
    A couple of suggestions:-

    Connect the Teensy to a virtual Midi pipe...
  35. Replies
    33
    Views
    2,233

    pinMode(pin,INPUT_PULLUP); where pin = the...

    pinMode(pin,INPUT_PULLUP);

    where pin = the relevant RX pin.
  36. The Teensy LC has enough pins to look at 2 pots...

    The Teensy LC has enough pins to look at 2 pots and 13 buttons without any multiplexer unless you want to add other hardware.

    The example Many_Button_Knobs can easily be tweaked to suit. Are you...
  37. Replies
    28
    Views
    4,951

    In a word, no to Serial. Updating the firmware...

    In a word, no to Serial.

    Updating the firmware of the MIO-10 enabled it's host to see a multi-cable usbMIDI Teensy, a Beatstep pro or a BCR-2000 although I don't ordinarily use the last two via...
  38. @oddson, that performance issue relates to...

    @oddson, that performance issue relates to usbHOST. I think that the issue here is the I2c is blocking so speeding up I2c has it spending less time blocking (midi).

    AIR, somewhere in this lengthy...
  39. Replies
    57
    Views
    19,423

    @eddevane, how about using a T4.0 with a hub...

    @eddevane, how about using a T4.0 with a hub hooked to it's usb host port allowing Windoze to see your individual devices as a single multi-cable device?
  40. Replies
    76
    Views
    4,724

    Just installed IDE 1.8.5 and TD 1.51 on a fresh...

    Just installed IDE 1.8.5 and TD 1.51 on a fresh updated install of Ubuntu 20.04.2 LTS and have the delayed opening of Teensyloader.
  41. Replies
    3
    Views
    372

    I2c ADC-Teensy latency may be the issue.

    I2c ADC-Teensy latency may be the issue.
  42. No problem. Not mentioned yet the possibility of...

    No problem. Not mentioned yet the possibility of ground-loop induced noise considering the low level audio being sent to the radio and how the Teensy is powered. An isolated 12-5v reg may be in...
  43. Tried a 1k pullup on the RX pins?

    Tried a 1k pullup on the RX pins?
  44. Replies
    0
    Views
    555

    Midi library V5 API

    Digging into the Teensy Midi library's API put this loopback tester together. Code is based on the example in File>Examples>Teensy>USB_MIDI>TransmitEverything.

    Running on a T3.5, USB Type MIDIx4,...
  45. Just been exploring the Cobra schematic and the...

    Just been exploring the Cobra schematic and the NPN low-side switch will not work for Pin 4 as the PTT switch more or less pulls the bottom end of the radio's speaker to ground for receive so is...
  46. Another thought on the way back to civilization....

    Another thought on the way back to civilization.

    How about an electret handheld mic and read the PTT switch state with a digitalInput pin and use two NPN low-side switches driven by the Teensy to...
  47. Another thought, on the road and staring me in...

    Another thought, on the road and staring me in the face is the Mic for a Uniden UH-012 so I took it apart. Has an electret mic and DPDT PTT switch.

    Might be a simpler way of providing a mic that...
  48. Yeah, CB was a busy marketplace for all kinds of...

    Yeah, CB was a busy marketplace for all kinds of gimmicks although some delay or reverb can greatly assist digging signals out of the noise floor at the receive end especially with SSB.
    Still have...
  49. Man, did we have fun with a tape loop and a CB...

    Man, did we have fun with a tape loop and a CB radio - 40 something years ago.

    A few questions:-

    What kind of CB, AM, SSB, FM whatever.

    Do you have it's schematic to explore whats on the...
  50. Glad you got it working. Played with a Shottky...

    Glad you got it working. Played with a Shottky bridge in front of the opto for receive and needed to drop the opto's series R from 220R to 200R to compensate for forward drop.

    With the bridge in...
Results 1 to 50 of 239
Page 1 of 5 1 2 3 4