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Type: Posts; User: nicolas_soundforce

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  1. Replies
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    I am using a gain of 5 on both channels which...

    I am using a gain of 5 on both channels which probably amplifies even more this "defect".
  2. Replies
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    Silly me! Using quad packages for the amp are not...

    Silly me! Using quad packages for the amp are not a good idea if you want good seperation between the 2 channels. I switched the TL074 for 2 TL072 and the crosstalk is completely gone. I learnt that...
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    I have a hardware question/issue with the PT8211....

    I have a hardware question/issue with the PT8211. I got it to work and playing audio files from a sd card, sounds good. But I am experiencing a lot of "bleeding" from one channel to the other. I mean...
  4. thanks! I overlooked those things. I will try...

    thanks! I overlooked those things. I will try right away.
  5. Teensy LC and IntervalTimer - working proprely ?

    Hi,

    I read on the IntervalTimer page that it's working only on Teensy 3.0. It seems that I can begin the function but I can't end it with .end().
    Is this a known issue ?

    I am building en...
  6. by updating only 1/4th of the screen at the same...

    by updating only 1/4th of the screen at the same time, I got the timing down to 4ms. I added a another variable to the .display() function, a line variable, so I can choose where I want to start...
  7. Thanks for the new input. I modified the code to...

    Thanks for the new input. I modified the code to update the screen only when something changed. And things are going great, almost perfect.
  8. Fantastic. I did that, so removed TWBR definition...

    Fantastic. I did that, so removed TWBR definition from the Adafruit_SSD1306.cpp file. And added Wire.setClock(1000000);, AT THE VERY END of the setup (). When I placed it just after Wire.begin() at...
  9. Making some progress! When I tried to use the...

    Making some progress! When I tried to use the Adafruit SSD1306 with the i2c_t3 library I commented the TWBR = 12; definition, in order to be able to compile it. I was using as start up code : ...
  10. other interesting thing, according to this thread...

    other interesting thing, according to this thread from 2012 : https://forums.adafruit.com/viewtopic.php?f=47&t=29918
    Updating a SSSD1306 via I2C should take 54ms (so 54000micros) on Leonardo at...
  11. The timing is : 109200 microseconds! This is what...

    The timing is : 109200 microseconds! This is what I get on the serial monitor with this code


    elapsedMicros since_screen = 0;
    display.clearDisplay();
    display.setCursor(0, 0);
    ...
  12. Thank you Paul, I'll try this right away and...

    Thank you Paul, I'll try this right away and report my findings!
  13. I2C nightmare (Teensy 3 + MCP23017 + SSD1306 + tca9548)

    Hi guys,

    I am really getting hopeless here… The project in a nutsheel:

    - 8 rotary encoders via a MCP2307 -> using interrups pins
    - 8 SSD1306 OLED screens (with all the same adresses) via...
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    ok, more news. my client having the problem...

    ok, more news. my client having the problem reported still having issues in EL Capitan but the device was working fine on windows.

    I connected remotely and installed ARduino+ Teensyduino 1.26 and...
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    Problem solved! I did this : Reboot and press...

    Problem solved! I did this :

    Reboot and press CMD+R immediately after hearing the startup sound to boot to Recovery Mode
    Open Terminal
    Execute the following command: csrutil enable...
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    USB-MIDI freezing with El Capitan

    Hi,

    I have experienced problems using a teensy LC-based MIDI controller I am building.

    As soon as the OS (El Capitan) is fully booted, the teensy seems to be frozen, no reaction to inputs or...
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    MIDI library and Teensy LC

    Hi!

    I am planning to use the traditionnal non-usb library with the TeensyLC.
    https://www.pjrc.com/teensy/td_libs_MIDI.html

    I am wondering which parameters of the circuit are changing for the...
  18. Do it! it's great fun. Good one about the...

    Do it! it's great fun.

    Good one about the pitch bend messages. Some DAW forces certain MIDI messages to certain DAW parameters. I would have to check if the pitch bend would not be automatically...
  19. I use the Bourns PTA :...

    I use the Bourns PTA : http://www.bourns.com/data/global/pdfs/PTA.pdf
    10kohms, 30mm travel length, 15mm long metal lever.
  20. Need advice for drums sequencer (Teensy 3.1+ audio board + 128knobs/leds +lcd screen)

    Hi guys,

    So this what I whish to do. A drum sequencer with 8 rows of 16 steps so 128 knobs and leds.
    Basically something like this but with sound generation on board :...
  21. My vintage-styled USB-MIDI controllers for software synth plugins (sound-force.nl)

    Hi!

    It's about time I show you what I am working on with the awesome teensy boards.

    I am building MIDI controllers especially laid out for software synthetizers. At the moment I have 2 products...
  22. Replies
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    Hi Paul, do you think that Teensyduino-generated...

    Hi Paul, do you think that Teensyduino-generated hex files could be uploaded to a 32u4 (with the original atmel bootloader) using Atmel flip ?
    Or within the Arduino IDE with an UNO as ISP or a...
  23. Replies
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    Thank you so much for confirming this Paul, it...

    Thank you so much for confirming this Paul, it works out now and it's all going smooth.
  24. Replies
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    that makes sense. thank you MuShoo.

    that makes sense. thank you MuShoo.
  25. Replies
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    I've noticed something strange. After changing...

    I've noticed something strange. After changing the MIDI device name on Teensy's 3.1, it doesn't load the sketches properly anymore. It requires to press the reset button everytime when uploading.
    ...
  26. Hi paul, Yes I am using your adapter. Sorry...

    Hi paul,

    Yes I am using your adapter. Sorry for the typo, I meant 7 and 14.
    Thank you for the specifics. Very handy.
  27. Teensy Audio Adapter free pins (when not using the SD card)

    Hi guys,

    Does anybody know if I can re-claim the SCLK and MOS pins, pins 4 and 7, if I am not using the SD slot for playback audio ?
    I'd need them for muxes and shift registers.

    Are there any...
  28. thank you paul, that fixed the problem.

    thank you paul, that fixed the problem.
  29. Can't compile most Audio library examples

    He guys,

    I got my teensy 3.1 and audio adapter running.
    I can upload my usual non-audio code. But anything audio (examples) won't compile.

    The SPI library seems to be the problem. Any clue on...
  30. Teensy 3.1 USB connection on a project PCB with USB-B connector

    Hi everybody,

    I am working on a MIDI controller project with the Teensy 3.1. I'd like users to connect to the controller into a sturdy USB-B connector like most commercial products. I don't want...
  31. Hi Paul, Thank you for confirming that my...

    Hi Paul,

    Thank you for confirming that my circuit is correct. As I already ordered my PCBs for this project, I looked it solving this in the software.
    Averaging 5 consecutive readings seemed to...
  32. Teensy 3.1 + 4051 and ground (GND or AGND?)

    Hi guys!

    I am using about 3 CD74HC4051 chips for a MIDI controller project.
    There seems to be quite some noise at the inputs of the ADC. I have to filter a lot to stabilize the signals (i am not...
  33. Actually I am not sure where to find that...

    Actually I am not sure where to find that information ?
    Is it the percentage value in the teensy window ? That says 10%.
  34. Thank you so much for your the details! I'll...

    Thank you so much for your the details!
    I'll read this and the code.
  35. Audio meter (Teensy 3.1 + Audio adaptor board + Led strip)

    Hi there,

    For my second teensy project I went for a Audio Meter for my home studio.
    I got a Teensy 3.1 and the audio adapter, soldered 2 jacks and plugged them on 2 audio outputs on my audio...
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