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  1. Multitasking MIDI / WS2812s / and BLDC motor control

    I am working on a larger MIDI controller with multiplexed switches, potentiometers, encoders, touch input, and back light switches. The switches are on a ws2812 led string, and run via this non...
  2. are you using hold up resistors on the encoder...

    are you using hold up resistors on the encoder lines?
    Not sure if it's THE fix, but just curious.
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    I am by no means an expert, but I was working...

    I am by no means an expert, but I was working with another project that also had a wide voltage range, but was only looking for an on or off, high or low signal.
    I did some research and came to the...
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    maybe one of these guys in line??? ...

    maybe one of these guys in line???

    http://www.holtic.com/products/3093-hi-8450-hi-8451.aspx
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    Arinc 429 data reciver

    Is it possible to read Arinc 429 on the Teensy's RX and TX pins?
    Even if there would be some sort of extra hardware involved I would like to know.
    thanks

    https://en.wikipedia.org/wiki/ARINC_429
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    Multiplexing encoders / MIDI question

    using this as an example:
    https://www.pjrc.com/teensy/td_midi.html
    Paul shows how to multiplex many knobs and buttons.

    Can I simply connect 4 rotary encoders to one 74HC4051 chip, then define...
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    Looking to wire multiple encoders. Would this...

    Looking to wire multiple encoders.
    Would this example of Common Bus Encoders work to send out midi signals?

    https://github.com/j-bellavance/CommonBusEncoders/blob/master/tutorial/tutorial.pdf
  8. Ya, there's no white here, just RGB. I like the...

    Ya, there's no white here, just RGB.
    I like the calling it out deal.
    Perhaps I could call em out as Red, and Red 1 for example.
    I'll try it out in my test I'm running
  9. trying to run WS2812 with RGB and GRB ??

    I am doing some testing with this library as it will be part of my MIDI controller project.
    https://www.pjrc.com/non-blocking-ws2812-led-library/

    Apparently this diffused neopixel LED...
  10. Thread: MIDI and MUX

    by j_dunavin
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    Seems easy enough to wire up. I have to...

    Seems easy enough to wire up.
    I have to apologise for my lack of knowledge.
    I still don't see or understand how you would assign the buttons to a midi note.

    Right now I am looking at 18...
  11. Thread: MIDI and MUX

    by j_dunavin
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    840

    That is a very good example, but I don't see, or...

    That is a very good example, but I don't see, or understand, how to add multiplexing. This example still calls out the pins individually.
  12. Thread: MIDI and MUX

    by j_dunavin
    Replies
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    840

    MIDI and MUX

    I have already created a nice midi controller for another project, but want to create a much larger controller.
    Having read this:
    https://www.pjrc.com/teensy/td_midi.html
    I want to use the...
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    good to know! So, as long as I follow this...

    good to know!

    So, as long as I follow this example: ( with the appropriate pins )
    https://www.pjrc.com/non-blocking-ws2812-led-library/

    I should be able to use the midi usb example, still...
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    maybe this as an example:...

    maybe this as an example:
    https://www.pjrc.com/teensy/td_libs_ShiftPWM.html

    ugh, that's a lot of wires.

    Would it be simpler to have a string of addressable LED's ( neopixles for example) And...
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    again looking here for reference:...

    again looking here for reference:
    https://www.pjrc.com/teensy/td_midi.html

    I would like to use the read midi function along side the sending midi notes to light up some led status indicators. ...
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    In this example:...

    In this example:
    https://www.pjrc.com/teensy/td_midi.html

    If I also wanted to connect a few rotory encoders, would I run the encoders right into the teensy (interrupt pins) then multiplex the...
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    The capacitive touch, what if I wanted many...

    The capacitive touch, what if I wanted many inputs? In there a way to multiplex them like the midi button example?
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    Awesome, that will open a few things up for me...

    Awesome, that will open a few things up for me then. Though I think I'll only need two states, and a toggle switch may help me see visually which state I'm in on the fly. I guess an LED would work...
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    Advanced Midi questions

    To start off I should say that I have successfully used code from this project to make my own midi controller using the Teensy LC:
    http://www.instructables.com/id/Custom-Arduino-MIDI-Controller/
    ...
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    Ah, good to know. Thanks!

    Ah, good to know. Thanks!
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    Midi / sound card

    Can the teensy pull double duty in sending midi signals, but also acting like an audio card?
    I'm using MIXXX on the raspberry pi, but it needs a USB audio to play back, smoothly.
    I already built a...
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    got it.. updated IDE, then i forgot that i had...

    got it..
    updated IDE, then i forgot that i had to go to a terminal and go to the downloads folder and do these commands:

    joe@joe-System-Product-Name:~$ cd /home/joe/Downloads...
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    Rodger! I'll give it a go later tonight.

    Rodger!
    I'll give it a go later tonight.
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    trying to upgrade teensyduino

    I'm currently running Arduino 1.6.11 and Teensyduino 1.32 beta 1, on Ubuntu 16.04 64bit.

    When I try to install Teensyduino 1.40 i get the following error: Sorry this did not work no file_to_app...
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    audio file continuous loop

    I really did try searching and looking through the example files, but couldn't find any examples on how to loop an audio file.
    For example in the Sample Player sketch, I wold like to switch a toggle...
  26. I'm sure you could use a Teensy LC for this. I...

    I'm sure you could use a Teensy LC for this.
    I just finished a Teensy LC MIDI controller. It takes 12 pushbuttons, 7 potentiometers and a rotary encoder and uses USB to plug into my laptop.
    So.....
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    Making some Progress... I found that if I read...

    Making some Progress...

    I found that if I read the state of the pin I can just paint a black box, just once, so the screen doesn't flicker. It only flickers when the switch is switched for that...
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    Didn't work exactly like I hoped. So I have 4...

    Didn't work exactly like I hoped.
    So I have 4 triggers, 4 messages, I would like them to print in the order they trigger, and go away in the order the condition is reset.

    To help with this ,...
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    Well, it turns out that PRINTLN does the job!...

    Well, it turns out that PRINTLN does the job!
    set the cursor, print your text and PRINTLN for the following messages will write them under the one you just printed.

    Now, could someone tell me how...
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    TFT display - text scroll or text wrap?

    I'm not sure exactly what to look for, though I know how I want the display to behave.

    I have a teensy 3.1 with the pjrc color touch tft. So far I can display messages anywhere I want on the...
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    Thank you. Seems obvious enough, just wanted to...

    Thank you.
    Seems obvious enough, just wanted to double check, and make sure.
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    USB direct wire?

    I have built a Teesny LC MIDI controller and everything works great!
    This is a dedicated teensy and I would like to know if I can bypass the usb connector and wire direct. USB data + - pads and then...
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    thank you for the replies. I really like this...

    thank you for the replies.
    I really like this method of soldering on the pads, as I see tonton81 did somewhat...
    https://forum.pjrc.com/threads/26071-Using-all-Teensy3-x-pins-with-a-socket
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    Well, here we go ;)...

    Well, here we go ;)
    https://www.pjrc.com/teensy/eagle_lib.html
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    3.5 eagle file?

    Does anyone have an eagle CAD file of the Teensy 3.5?
    Someone else had created an eagle CAD file of the Teensy 3.1 that brought out the underside pads I'm hoping that someone would have a similar...
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    It's been awhile since I had been working on this...

    It's been awhile since I had been working on this project and am not using this library anymore, but I still have it set up in the bread board.
    I'll look at it this weekend.
  37. Midi controller + synthesizer or beat machine.

    I have successfully built a USB to DMX interface to control my DJ lights.
    I'm planning on building this to control them vs using hot keys on the laptop....
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    DMX > max485 > teensy > led pixel strip

    I would like to control an LED pixel strip via my already existing DMX controller. I am not looking for anything too in depth, all I want to do is to be able to change the color, brightness and maybe...
  39. Ya... I was hoping for something really small....

    Ya... I was hoping for something really small. Maybe even small enough to fit in with my mixing board, CD player, box.

    Right now it doesn't sync up with the music, and though I was thinking the...
  40. Stand alone, programable, DMX controller.

    I am running Freestyler DMX on an older xp laptop, have made a few sequences, and it works great.

    I would like to know if it would be possible to read the data coming out of the USB to DMX...
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    Maybe something like this, but using a teensy 3.6...

    Maybe something like this, but using a teensy 3.6 and two audio boards?
    http://www.instructables.com/id/Teensy-Monster-v10-DIY-MIDI-Controllers/?ALLSTEPS
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    Oh I agree that it would be a huge undertaking. ...

    Oh I agree that it would be a huge undertaking.
    I really am not sure that you could build something as nice as that Denon piece for the $550 they are selling for new.
    I'm just interested if it's...
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    well, quad mono audio, I'm looking for quad...

    well, quad mono audio, I'm looking for quad stereo.
    I'm thinking that the quad audio would still work for mixing the two song on the pc.
    Then output that to my opamp section where I could route...
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    DJ controller, not just a midi controller

    I have seen many midi controllers as I have searched, but not one that is also the sound card as well.
    I am wondering what it would take to build something like this:...
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    after a little research i believe that the very...

    after a little research i believe that the very fast blink MAY be ok for the given code, and that i need to actually tell it how long i want it ON and OFF ?
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    no... this, originally, was just meant to read...

    no... this, originally, was just meant to read the buttonPin, IF low then print red else print in black.
    If i understand your question correctly.....I'm new!
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    Maybe a better way to ask is, what method would...

    Maybe a better way to ask is, what method would work here to make my text blink on and off when my pin goes low?
    Delay works, but causes problems down stream, so that's out.
    Suggestions?
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    two teensys and serial data

    I am in the middle of getting a teensy to display lines of text onto an lcd with switch inputs, which is moving along nicely.
    I thought it would also be cool to use the audio add on board to have an...
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    How do I make my text flash using mills?

    My code works as shown, but I want to be able to have my println, flash when button State1 is low and go away when the pin is not low. (flash on for one sec and off for one sec)
    I was able to get it...
  50. TFT - println and then clear the message

    There must be an easier way to read a digital input, println then clear that line only when the digital input is reversed?

    see code... please advise ! :confused:

    PS this does work though!!

    ...
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