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  1. Arduino...

    Arduino filemenu->Examples->USBHost_t36->Serial->MIDI->InputFunctions.ino
  2. This works for me for creating filenames at...

    This works for me for creating filenames at runtime:


    int filenr = 55;
    String name = "raw/" + String(filenr) + ".raw";
    const char *filename = name.c_str();
    frec =...
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    I'm pretty sure this means any size ranging from...

    I'm pretty sure this means any size ranging from 0402 to 0805, this includes 0603.
    Go for the largest size(0805 imperial). For those with a slight masochistic tendency go for 0402.

    If I'm not...
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    Did a fresh install of Catalina build 19A583 on...

    Did a fresh install of Catalina build 19A583 on an unsupported early 2011 MacBook Pro.
    Granted full disk access to Arduino 1.8.10 after it's installation. Installed Teensyduino 1.48.
    Confirming the...
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    Change the resistor to 2k2 and/or add a 100nF...

    Change the resistor to 2k2 and/or add a 100nF capacitor between pin14 and GND.
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    I very much like your approach for patching a...

    I very much like your approach for patching a polyphonic synth without too much effort. It makes complex synth designs a lot more manageable.
    Thanks for posting your code.
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    Disable the internal pullup and use an external...

    Disable the internal pullup and use an external 4k7 resistor. Your wire is probably acting like an antenna and the internal pullup is not strong enough.
    The resistor goes between pin14 and 3.3V.
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    An important factor for producing castellated...

    An important factor for producing castellated holes is reversing the routing direction(climb cut instead of conventional cut) as to not rip out the plated hole.
    A different end mill might be...
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    The audio lib processes the audio stream in...

    The audio lib processes the audio stream in blocks of 128 samples every 2.9ms. Sample rate is 44117.64706Hz and sample size is 16 bit integer.

    Normally you feed audio in the AudioEffectEnvelope...
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    Yes, have a look at the AudioRecordQueue object:...

    Yes, have a look at the AudioRecordQueue object:
    https://www.pjrc.com/teensy/gui/index.html?info=AudioRecordQueue
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    I don't see any pullup resistors for TFT_CS &...

    I don't see any pullup resistors for TFT_CS & T_CS.
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    No, this will not work since this is only...

    No, this will not work since this is only evaluated when you set the cutoff freq, not while modulating it. You would have to modify AudioFilterStateVariable::update_variable() in filter_variable.cpp...
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    @f.wberg What do you exactly mean by "let the...

    @f.wberg
    What do you exactly mean by "let the filter swing widely in upper cutoff regions"?

    Again assuming you use AudioFilterStateVariable, if you want to "swing" the frequency above or past...
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    You could use the amplitude member function from...

    You could use the amplitude member function from the AudioSynthWaveform class, assuming this is the class you use for your lfo.
  15. No need for a level converter. Just connect the...

    No need for a level converter. Just connect the pullups to 3.3V and you're good to go.
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    @quarterturn A while back I posted an example on...

    @quarterturn
    A while back I posted an example on how to use arrays of audiolib objects,...
  17. Same here, generating CV signals for eurorack...

    Same here, generating CV signals for eurorack modules. 2 DACs is the minimum, 3 is an odd number(pun intended), 4 or more would be ideal.
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    @PaulStoffregen MacBookPro8,2 early 2011 4Gb...

    @PaulStoffregen
    MacBookPro8,2 early 2011 4Gb ram, i7 2.2GHz, osx 10.14.6, arduino 1.8.9, td1.48beta1

    first run
    attempt 1: 5m30s 40% cpu load arduino
    attempt 2: 30s 40%
    attempt 3: 1m35s 40%...
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    @dimitre The PCF8574 INT pin is open drain, so...

    @dimitre
    The PCF8574 INT pin is open drain, so it also needs a pullup resistor. Any value between 4k7 & 10k should do it.
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    @KurtE Found them available in single...

    @KurtE
    Found them available in single quantities, shipping from china:
    https://www.buydisplay.com/default/led-backlight-driver-ic-chip-pt4110-in-sot-89-5-package...
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    @KurtE If you short J15 and open J16 and then...

    @KurtE
    If you short J15 and open J16 and then connect pin15(BL_CONTROL) to 5V, the backlight turns on as soon as you power the display.
    If the backlight then shows the same behaviour when you power...
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    @mjs513 I changed getGesture() to track the...

    @mjs513
    I changed getGesture() to track the screen rotation and also made a new example sketch. It demonstrates swiping and pinching. Screen can be rotated by touching it with 3 fingers.
    PR send....
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    @KurtE rectification: The cap is a 10uF 16V...

    @KurtE
    rectification:
    The cap is a 10uF 16V tantalium capacitor. It is connected between 5V and GND, the led driver circuit is powered by the 5V rail.
    orientation:
    with your pic as reference, the...
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    @KurtE First you need to carefully desolder the...

    @KurtE
    First you need to carefully desolder the cap and remove burned residues from the pcb with some solvent, I usually use isopropyl alcohol.
    Then next thing to do is to measure for continuity...
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    @KurtE Ouch, it looks you might have powered...

    @KurtE
    Ouch, it looks you might have powered your display with the wrong polarity. C26 is part of the backlight driver circuit and is connected between GND and the 3.3V rail. Electrolytic capacitors...
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    @mjs513 The 5th touch point coordinates for the...

    @mjs513
    The 5th touch point coordinates for the FT5206 are wrong.
    Fixed it and send you a pull request.
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    @KurtE Just want to confirm that this indeed...

    @KurtE
    Just want to confirm that this indeed makes a difference.
    My initial test had the 4.3" display plugged straight in my T4 protoboard and it worked without these settings.
    After adding a...
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    @kurtE In my humble opinion it is not worth it....

    @kurtE
    In my humble opinion it is not worth it. Why use 2 different touch technologies unless you have them in your parts bin. If it was for a new project I would definitely use identical screens.
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    @Alan You just need to insert...

    @Alan
    You just need to insert AudioEffectEnvelope between AudioMixer4 and AudioOutputI2S. Then you trigger it with noteOn and noteOff in stead of adjusting the volume of your oscillators.
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    @DaQue 4.3" lcd pulled to gnd CS 330uA SDI...

    @DaQue

    4.3" lcd pulled to gnd
    CS 330uA
    SDI 330uA
    SCLK 330uA
    4.3" lcd pulled to 3.3V
    CS 1uA
    SDI 1uA
    SCLK 1uA
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    If you want to tackle the 1mm SDIO pads, i would...

    If you want to tackle the 1mm SDIO pads, i would suggest the following tools:

    1.2mm conical chisel tip for your soldering iron, anything bigger and you won't be able to solder one pad without...
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    Rest assured that everything I solder I first...

    Rest assured that everything I solder I first check optically with a 9x magnifier and then electrically with a multimeter for shorts and continuity. Before I even think of powering the circuit.
    ...
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    My 4.3" display works perfectly with T4, without...

    My 4.3" display works perfectly with T4, without the fastio setup.


    That's because the RA8875 CS, SDI and SCLK inputs each have a 10k pull up resistor to 3.3V(R1, R3, R3, respectively). So the...
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    @mjs513 T4 is powered by usb, 7" display is...

    @mjs513

    T4 is powered by usb, 7" display is powered by an external 5V psu. RST is connected.

    Adjusting drive strength and speed to
    uint32_t fastio = IOMUXC_PAD_DSE(6) | IOMUXC_PAD_SPEED(1);...
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    I think that's a good idea. Managed to make...

    I think that's a good idea.

    Managed to make both the 4.3" & 7" work with T3.6.
    Max spi speed is 18MHz for both displays. Faster and the output on the screen is corrupt.

    The 4" with T4 runs at...
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    @KurtE I've send you a pull request for a bug...

    @KurtE
    I've send you a pull request for a bug fix in the drawLineAngle() function. It would not work if "length" was lager than "start".
    I also modified the drawLineAngle_example.ino to verify the...
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    Same here. Got the 4.3" 800x480 working with...

    Same here.
    Got the 4.3" 800x480 working with KurtE's multi version without a hitch.
    Today I tried the 7" 800x480 and it refused to work. Pinout is exactly the same so it should be a drop in...
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    If you look at the component side, sd card to...

    If you look at the component side, sd card to your right and JP1 to your left, pin1 is top left.

    lcd pin5 -> t4 pin10, CS - CS
    lcd pin6 -> t4 pin12, SDO - MISO
    lcd pin7 -> t4 pin11, SDI -...
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    @KurtE @mjs513 @pd0lew I wanted to thank you...

    @KurtE @mjs513 @pd0lew
    I wanted to thank you guys for making this lib work on the T4.
    Received my displays this morning. Hooked up the 4.3" and it is up and running.

    Used this branch,...
  40. I have zero experience with FL Studio but here...

    I have zero experience with FL Studio but here are a fews suggestions to try to narrow down the source of the problem.
    First, remove the usb hub from your setup. Does the problem still occur?
    If...
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    I've checked the datasheets of every RA8875 lcd...

    I've checked the datasheets of every RA8875 lcd from BuyDisplay. They all without exception have a WAIT pin.

    Displays with integrated capacitive touch controller have a 40pin connector for...
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    serialmon_speedup_8th_try.zip

    MacBookPro8,2 early 2011 4Gb ram, i7 2.2GHz, osx 10.14.6, arduino 1.8.9, td1.47

    I managed to install Mojave on my 3th machine, which is NOT supported by Apple.
    Everything freshly installed.
    ...
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    @mjs513 Just received my shipment notification.

    @mjs513
    Just received my shipment notification.
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    Same here. Ordered 48h ago and the order is still...

    Same here. Ordered 48h ago and the order is still processing.
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    I am sure it is the new version since I ran it...

    I am sure it is the new version since I ran it straight from the download folder.
    iMac27-i5:~ xxx$ cd /Users/xxx/Downloads
    iMac27-i5:Downloads xxx$ ls -l teensy_serialmon
    -rwxr-xr-x@ 1 xxx staff...
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    Yes, it is still running. Activity Monitor is...

    Yes, it is still running. Activity Monitor is showing teensy_serialmon at 0%. When closing teensy_serialmon, it disappears from the Activity Monitor list.


    It also stops printing in the terminal....
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    serialmon_speedup_7th_try.zip - teensy_serialmon_macintosh.zip

    Ran the test on 2 Macs,
    iMac 2011 24GB ram, osx 10.13.6, arduino 1.8.9, td1.47
    MacBook Pro, early 2011, i7 2.0GHz, 8GB ram, osx 10.12.6, arduino 1.8.9, td1.47

    The results are identical to my...
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    serialmon_speedup_7th_try.zip

    iMac 2011 24GB ram, osx 10.13.6, arduino 1.8.9, td1.47

    Plugin t4 with usb_serial_print_speed.ino already flashed.
    Open arduino.
    Open the serial monitor, sometime later it will stop printing...
  49. I just noticed that you are using AudioOutputUSB....

    I just noticed that you are using AudioOutputUSB. You mentioned nothing about usb. Please be more specific about your setup. What Teensy? How is it wired to the A70 and other devices? The more...
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    Thanks for taking the pictures. I took the path...

    Thanks for taking the pictures.
    I took the path of least resistance and ordered both.:)
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