sbfreddie
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    • sbfreddie
      Thanks KurtE! That will solve my issue with centering a small line of text.
    • sbfreddie
      KurtE, et All: Is there a function call to determine the font size (X,Y) in pixels of the ILI fonts? I am writing a Buttons class and have not been able to determine the actual size in pixels of the font Arial 16. Thanks, Ed
    • sbfreddie
      Did you configure the hardware jumpers on your board? Attached is a reference for doing that. On the front of the board just below the letters SCK there are two rectangular solder points, when soldered together that will short the SCK to ground...
      • PCM 5102 DAC board Configuration.png
    • sbfreddie
      Tom: I apologize for the appearance of being nit-picky. I come from an Aerospace background were our measuring circuitry had to be at least 1000 times better (in every way) than that which we were measuring. My best friend and mentor Paul...
    • sbfreddie
      Tom: Keep in mind that the A/D's used in all audio devices are not suitable for generalized digitization of data for measuring anything. You should be using Successive Approximation A/D's for all your instrumentation work. I am sure Mark T. will...
    • sbfreddie
      sbfreddie replied to the thread Pulse counter using Teensy 4.0.
      You could also add another op-amp stage with the gain to raise the output to 3V, or put a comparator in instead of an op-amp. The A/D converter on the 4.x is very fast, and the Teensy 4.x has a 600MHz clock so would not have any problem keeping...
    • sbfreddie
      sbfreddie replied to the thread Pulse counter using Teensy 4.0.
      If you boost the gain on your Trans Impedance Amplifier (TIA) to output 0 -> 3.3Volts you could send it directly into the Teensy 4.x and count pulses with no problem, otherwise you could send it into the A/D and then do anything you want with the...
    • sbfreddie
      mykle: MTP is not supported by the MacOS. If you want to use MTP you have to get an .app that will do this for you. Try Macdroid, MTP Mac, or Android file transfer. I have used all three in the past and they do work, although some are clunkier...
    • sbfreddie
      I would also check for continuity between the power supply safety grounds and the V- supply pins of the Power Supplies to make sure you are not creating a ground loop between the safety ground and the Ground pins of the Teensy and Motor Driver...
    • sbfreddie
      I would probably use the Teensy's 5V output (at the Vin pin) instead of the 3.3Volt output (4 ohm speakers could be a lot of power at 3.3V). Did you set the jumpers for gain correctly? Here is what the information page says: Five...
    • sbfreddie
      Thanks Kurt Ed
    • sbfreddie
      Kurt & Mike: I am sorry to bring this old forum thread back to life, but I have been having difficulties with text sizes ever since I started using the RA8876 instead of the RA8875. Here is the dilemma, in order to determine where to place...
    • sbfreddie
      I have made changes to the copy files from SD to Flash code to close any open files for all the error return points as you have suggested, (I think this could have been written a little more elegantly as you so apply have described it), however...
    • sbfreddie
      I'll have to check that out! Thanks, Ed
    • sbfreddie
      H4yn: I have attached to this post similar code that uses FrankB's Wave Player code which is kind-of old but it does work just fine using QSPI_Flash. If you have a moment check it out, as it is not very complicated. Regards, Ed
    • sbfreddie
      I am using the Teensy4.1. The version of Teensyduino that is currently be used by PlatformIO is 1.59. Here are the two files Tick and Tock
    • sbfreddie
      h4yn0nnym0u5e: Actually this is remarkably similar to mine in the way it works, first initialize the SD card, then initialize the LittleFS Ram (in my case LittleFSFlash), then copy the file from the SD to the LittleFS file. In my case there are...
    • sbfreddie
      Just for example on my Mac: Xcode.app uses: 23.41GB Wireshark uses: 232.1 MB WhatsApp uses: 328 MB VMware Fusion uses: 1.26GB Visual Studio Code.app uses: 567.5MB Visual Studio.app: uses: 1.63GB No Platform IO is not very big compared to a...
    • sbfreddie
      How about this compressed file of just the Main.cpp, I am sure you can figure out the rest. About the IDE, I also have used many different IDE systems over the past 5 decades, and you are correct many of them had steep learning curves. I have...
    • sbfreddie
      @h4yn0nnym0u5e: I created a bare bones project to try using your Audio system to play from QSPI Flash Memory using LittleFS, and it does not work. My code tells me that it is playing, but nothing is coming out of the audio system which is...
    • sbfreddie
      DrM: Aaaw the good old days at Hughes Santa Barbara Research Center. This design brings me back to the great times that I had designing and working with CCD arrays (IR) forty years ago. Keep up the good work! Regards, Ed
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