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Type: Posts; User: Bewing

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    @skpang : Thank you very much for writing. I...

    @skpang : Thank you very much for writing. I decided to go ahead with porting to LVGL V8.02. I now have the basics working -- SPI serial driver and resistive touchscreen, all built on your...
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    LVGL on Teensy 4: Upgrade to v8

    This for SKPang (Id be grateful if you could send me a message: bewing2@gmail.com .)

    I'm doing LVGL on Teensy 4.0; ILI9488, 480x320 SPI LCD. Everything was going swimmingly under LVGL v7.11,...
  3. To be clear: I am the idiot here. My application...

    To be clear: I am the idiot here. My application is very height-limited and I was so excited about getting to the audio portion of this project I wasn't thinking and just jammed the boards together...
  4. Short Between Teensy 4.0 and Audio Shield -- Teensy Fails & Gets Hot!

    This took me a while to figure out... My Teensy 4.0 worked fine (with a connected LCD) but when I soldered an Audio Shield (Rev D, of course) under the Teensy, it stopped working and got quite warm....
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    Did you ever figure this out? I think I know what...

    Did you ever figure this out? I think I know what your problem is -- the Audio Shield is too close to the Teensy and C29 (I think) touches the grounded metal of the SD card frame, shorting +3.3V to...
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    Mistakes in that schematic (wish I could delete)...

    Mistakes in that schematic (wish I could delete) -- MISO & MOSI confused. Here's the corrected schematic:
    24425
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    Teensy 4.0/4.1 with ILI9488 and XPT2046 -- working!

    I want to report back that I have SKPang's Teensy40_lvgl_demo_widgets-master working (with many changes). I'm posting this because it might help somebody trying to do the same thing. (In my mind,...
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    Solid suggestions, Kurt -- thanks, thanks,...

    Solid suggestions, Kurt -- thanks, thanks, thanks!
    1) I tried graphicstest9488 and got it to work. (I had to remove splitter resistors because Teensy signals are 3.3V.)
    I thought the clock was...
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    I figured this out -- I didn't install...

    I figured this out -- I didn't install Teensyduino.
    It also appears that I should (possibly?) get ILI9488_t3 from the library, not from the .ZIP file. I'll try that. At the moment, I'm stuck with:...
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    I greatly appreciate your help (and your...

    I greatly appreciate your help (and your collie's).
    I am using several 14-pin LCD panels with ILI9488 (SPI) and resistive touch (I2C?) controllers -- from Amazon and (yes, it's true) Ali Express....
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    Teensy 4.0/4.1 & ILI9488 LCD

    I’m new to Arduino. I want to use a Teensy 4 for an audio application and I would very much like to have 480x320 graphics (ILI9488.) I’ve been going in circles for weeks, surely doing many things...
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    Teensy 4.1, Touchscreen, Audio

    Working on a handheld audio project, I recently abandoned Raspberry Pi (boot time too long) in favor of Teensy 4.1 -- I am very excited about the audio possibilities.
    I need touchscreen LCD for...
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