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Type: Posts; User: kyranzor

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  1. Oh it looks like the SD.h example library...

    Oh it looks like the SD.h example library programs show how to print the contents of files/directories from Root of the SD card. that doesn't use the sdFat.h include? I am just about to test it,...
  2. SD card audio library to scan SD card for valid files and make a list?

    Hello,

    In my project, I'd like to play WAV files from the SD card, but first I would like to scan the SD card filesystem and find all the valid sound files on there and return a dynamically...
  3. Frank, I had not considered copying the files...

    Frank,

    I had not considered copying the files into an external flash chip, that sounds like a reasonable plan to check out. My concern is that the users are not necessarily bound to a certain...
  4. Hey Paul and Frank thanks for the replies! ...

    Hey Paul and Frank thanks for the replies!

    The teensy 3.2 I test with on my own custom audio board (has SD card mount and a texas instruments 25W mono channel class D amplifier IC) has enough...
  5. Can the SD Card play WAV sounds into a mixer block for layered/overlapping sounds?

    I have a project where the SD card plays gun-shot sound effects, which may have trailing after-effects like bullet casings or a bolt/mechanism sound.

    If the device fires 3-4 consecutive shots, in...
  6. Cool, thanks tni! :D

    Cool, thanks tni! :D
  7. What is the SYSTICK frequency? If the Teensy 3.2...

    What is the SYSTICK frequency? If the Teensy 3.2 is running at 120Mhz, is that the frequency it runs at?
  8. Brooks, I am trying to measure jitter down to...

    Brooks, I am trying to measure jitter down to tens of nanoseconds, so any sampling delays or possible interrupt latency is unacceptable, that's why I had the idea to try the hardware timer module...
  9. Oh dear, that difference is huge and cuts it...

    Oh dear, that difference is huge and cuts it pretty close for the sort of resolution I was hoping to get... Still, it's worth a shot and I have a few T 3.6's hanging around so thanks for the info and...
  10. I'm trying to quantify jitter in a single...

    I'm trying to quantify jitter in a single pulse-train, not between multiple inputs, does that change anything? As in, I know it's meant to be exactly 60Hz, and as the clock edges trip the event...
  11. Flex Timer for input event capture at full system clock rate

    Hello,

    I have a quick question about the capabilities of the Teensy 3.2 and/or 3.6 (if there's a difference) Flex Timer module and configuring them for event capture mode.

    I have read the...
  12. great, thanks Kurt. I did see some of your other...

    great, thanks Kurt. I did see some of your other posts regarding the SSD1306 libaries and various other I2C threads. Thanks for your contributions to the community.
  13. Teensy 3.2 I2C Slave on SCL0/SDA0, I2C master on SCL1/SDA1 at same time

    Hi!

    I have a project where i'd like to talk to an IMU using the SCL1/SDA1 pins underneath the Teensy 3.2 where the teensy is a master, but I also need the teensy to act as a slave for a beaglebone...
  14. Thread: Bat detector

    by kyranzor
    Replies
    287
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    26,056

    The flying foxes make audible sounds, and yes...

    The flying foxes make audible sounds, and yes they have good eyes.

    If you do a sensor network comprised of teensy logging devices, then a base station from a raspberry pi with GPRS module or SIM...
  15. Thread: Bat detector

    by kyranzor
    Replies
    287
    Views
    26,056

    haha, that's cool. I worked as an engineer for a...

    haha, that's cool. I worked as an engineer for a university's robotics lab and one of the projects I did was a GPS flying-fox (large bat) monitoring device that is glued to the back of the animal and...
  16. Thread: Bat detector

    by kyranzor
    Replies
    287
    Views
    26,056

    Just a random comment here, these bat monitoring...

    Just a random comment here, these bat monitoring devices could be interesting to researchers in ecology/biology so whoever "owns" this idea/prototype (DD4WH) should approach their local universities...
  17. thanks for the replies everyone, defragster's...

    thanks for the replies everyone,

    defragster's post was the most helpful, and from the looks of the prop shield and example code the audio library doesn't change any pins (like to the SPI...
  18. Teensy 3.2 audio library pin configuration defaults without STGL5000

    Hi there,

    I'm intending to use the Teensy's DAC and the audio library to output to my own PCB with an audio class-D amplifier chip (TPA3112D1) for a 20W mono-speaker sound unit.

    I'm doing the...
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