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  1. Thanks for the modded PCA9685 lib! Going to try...

    Thanks for the modded PCA9685 lib! Going to try it later this week with a Teensy 3.2. Did you have to use the resistors on the RX line between the PCA and the Teensy?
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    Ok got it working....just started from scratch,...

    Ok got it working....just started from scratch, made sure to test all wires used, etc. Thank you!
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    Feeling Dumb About Servos :/

    Yesterday I posted a question about getting a PCA9685 working with Teensy 3.2 : https://forum.pjrc.com/threads/57819-Teensy-3-2-and-Adafruit-PCA9685

    I decided to just pull the PCA9685 out of the...
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    Teensy 3.2 and Adafruit PCA9685

    Hey guys, I have been trying to get a Teensy 3.2 talking to a PCA9685 servo controller using the AdaFruit library with no luck so far. I was originally using an Arduino Uno, but decided to try a...
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    I got it working, but was still having some tonal...

    I got it working, but was still having some tonal quality issues and then had to put it down for a while.

    In the meantime, the Audio lib has been updated with a pitch shifter that works pretty...
  6. I got my SanDisk Ultra SDHC 16G in the mail today...

    I got my SanDisk Ultra SDHC 16G in the mail today and so far so good. Have been playing the loop continuously for over an hour and no stutters, the memory is consistent, and memory usage is SO much...
  7. I started off using the SanDisk, but was having...

    I started off using the SanDisk, but was having to reformat the card every couple of weeks or so as all of a sudden I couldn't read it. I switched to ADATA and have never had to reformat, but get the...
  8. I was actually testing this again today. I have...

    I was actually testing this again today. I have tested it on several different devices (all Teensy 3.2 with an Audio adaptor.) One of them is from parts I received about 6 (?) weeks ago. The other...
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    Try setting the SCL and SDA pins in your Wire...

    Try setting the SCL and SDA pins in your Wire setup (change them to the pins you are using of course):

    Wire.setSDA(17);
    Wire.setSCL(16);

    I'm using those two instead of the standard pins...
  10. Teensy 3.2 + Audio Adapter: Memory Spikes and Playback Stutters

    I've been trying to diagnose an issue whereby the Max Processor Usage (see code) suddenly spikes and a loop I have playing from SD will stutter for a second. This cycle continues at a seemingly...
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    **** moving to technical support forum ****

    **** moving to technical support forum ****
  12. I got this working using a Teensy 3.2 with Audio...

    I got this working using a Teensy 3.2 with Audio Adaptor, the lipoly backpack from Adafruit and the Lipo fuel gauge from Sparkfun.

    You have to set the SDA and SLC pins using the Wire library:
    ...
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    Memory Spikes and Playback Stutters

    Hey All,

    I've been trying to diagnose an issue whereby the Max Processor Usage (see code) suddenly spikes and a loop I have playing from SD will stutter for a second. This cycle continues at a...
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    I have not tried Kingston. I do have a PNY that...

    I have not tried Kingston. I do have a PNY that has also had no problems. My SanDisks I was having to reformat every couple of weeks or so.
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    I was having this same issue. My solution was to...

    I was having this same issue. My solution was to stop using SanDisk. I've begun using ADATA brand SHDC cards. If you have access to a MicroCenter store, their branded SD cards are actually ADATA...
  16. I am trying my setup with the separate charger...

    I am trying my setup with the separate charger and lipo fuel gauge. I have it all connected, and the battery charges and powers the teensy+audio adaptor just fine. I also found this code:
    ...
  17. As you can tell I had to put this project down...

    As you can tell I had to put this project down for quite a while and am just now able to resume it ;)

    After a bit of more research, I found this:

    https://www.sparkfun.com/products/13777
    ...
  18. Dynamically Change Chorus and Flange Sample Lengths?

    Hi All,

    Just started experimenting with the chorus effect and flanger effects, and the docs say the only modification you can make to the chorus is the number of voices once you have called begin....
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    Great thank you...got it working. Also checked...

    Great thank you...got it working. Also checked out the video on the link you provided.

    I'm wanting to use this with a voice input and change the pitch of the voice up or down. It's compiled and...
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    @omjanger Getting a compiler error that...

    @omjanger Getting a compiler error that 'DelayWave' is not declared. I do not see it anywhere in the example you provided. Is this something you declare in your code somewhere?


    'DelayWave'...
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    Thank you so much! I will definitely try this...

    Thank you so much! I will definitely try this tonight!
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    Anyone Doing Pitch Shifting?

    Hey Everyone,

    Just wondering if anyone is doing pitch shifting (i.e. voice changing/modulation) with Teensy 3.2 and Audio Shield?

    I have been doing some research on how to accomplish this and...
  23. Is this possible? Teensy 3.2 + Audio Shield + Lipo Charger + Lipo Fuel Gauge?

    Hey guys,

    I've been working on converting a project that uses a Teensy 3.2 + Audio Adaptor to work on a lipo battery and have the lipo charger (https://www.adafruit.com/product/2124) connected and...
  24. Thanks for those! The battery babysitter looks...

    Thanks for those! The battery babysitter looks great, but it's too big for my project (but I might use that for something in the future...) I ordered the other battery monitor and will integrate...
  25. Help with detecting battery level and when USB is connected

    Hi All,

    I have a Teensy 3.2 using the audio shield and am using a Trinket Backpack LiPoly adapter to power it. I cut the Vin/VUSB trace and have soldered the connections from the backpack to the...
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    Glad I found this post! Was using the Adafruit...

    Glad I found this post! Was using the Adafruit but really wanted something that would mount to the Teensy. So if I am reading this correctly (I could tell from the Tindie page) the STBC08 does not...
  27. Here is a video where you can here the pop when...

    Here is a video where you can here the pop when it is turned on and off.

    https://youtu.be/KPCN3QVxX-o

    I have the Trinket LiPoly Backpack connected to the Teensy like so (Vin/VUSB connection is...
  28. Sorry yes I am just connecting a 3.5mm cable from...

    Sorry yes I am just connecting a 3.5mm cable from the headphone port to a powered speaker, so now am thinking it's on the powered speaker's side.
  29. I'm using the built-in speaker port, so I don't...

    I'm using the built-in speaker port, so I don't think I have the ability to add the relay? For the line-out I could do that. Thank you!
  30. Preventing Speaker Pop When Switching on Teensy 3.2 with Audio Adaptor

    Hi All,

    I have a Teensy 3.2 that is connected to the Audio Adaptor and have cut the Vin/VUSB pads and am powering it with the Trinket LiPoly backpack from Adafruit. There is a switch on the...
  31. Ok, I upgraded to Arduino 1.8.2 and TeensyDuino...

    Ok, I upgraded to Arduino 1.8.2 and TeensyDuino 1.36. Still not listing all the folders.

    I created a sample sketch using SDFat and it lists all of the folders on the card. Below is the SDFat...
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    Oops sorry I forgot I had posted about this...

    Oops sorry I forgot I had posted about this before...I'll continue in that post:

    https://forum.pjrc.com/threads/41872-Can-t-List-Files-on-SD-Card-Teensy-3-2-Audio-Adaptor?highlight=list+files
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    Thanks for the replies. I ended up just wiring...

    Thanks for the replies. I ended up just wiring it to the mic jack for both types of inputs. I noticed with the L/R lugs wired to both line-in and mic with a common ground there was signal loss and...
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    Can't List All Directories on SD Card

    I have 5 directories on my SD card, but for some reason it only finds 4. They are all 8 characters or less. I can access it directly through the code (ex SD.open("/thedir")) but it won't show up in...
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    Wire Line-In and Microphone to Same Jack?

    Hey All,

    Just wondering if wiring the positive side of Line-In and Microphone to the same lug on a 3.5mm jack and then just wiring either the ground of the Line-In or Microphone to the ground lug...
  36. Great guys thanks for the responses. Seems easy...

    Great guys thanks for the responses. Seems easy enough...just didn't want to fry the Teensy ;) Thanks again, going to wire it up today.
  37. Awesome thank you! And yes good idea I will try...

    Awesome thank you! And yes good idea I will try that.
  38. Help with Connecting Lipo Battery and Charger to Teensy 3.2

    Hi All,

    I'm using a Teensy 3.2 with the Audio Adapter and am wanting to power it with a Lipo battery and accomplish the following:

    1. Micro USB is used to program Teensy as normal
    2. Micro...
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    Hi Paul, Thanks for the info and links! ...

    Hi Paul,

    Thanks for the info and links! Before seeing your post I was looking at the board and noticed the wafer in the micro usb port was tilted down a little and higher on one end. I adjusted...
  40. Update: Tried a different SD card and same...

    Update: Tried a different SD card and same results. I used SDFormatter again to reformat the card, this time choosing the option to rewrite the logic when you click the "options" button, and that...
  41. There is code at the bottom that filters those...

    There is code at the bottom that filters those out.

    But now that you mention it, I will delete those from the SD and see if that fixes anything.
  42. Only Read Some of the Folders on SD Card

    I have a simple program that recursively iterates through the SD card, starting at root, and prints out all of the directories. However, it's only finding about half of the directories. I have...
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    No serial connection. Can't load any sketches. ...

    No serial connection. Can't load any sketches. There is power to the board, but no serial connection.
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    Thanks guys. I am on a Macbook Pro. When I plug...

    Thanks guys. I am on a Macbook Pro. When I plug in the Teensy via USB it usually shows up the ports in the Arduino IDE. I tried restarting the laptop and using different USB cables. When I plug...
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    Eh...Is my Teensy 3.2 Dead?

    Hi All,

    I have a Teensy 3.2 soldered to an Audio Connector that was working fine until yesterday. I was uploading a change to the sketch, and right before it finished uploading the LED went off...
  46. Well, good and bad news ;) When I activated...

    Well, good and bad news ;)

    When I activated the optimized code, my sketch could perform a file listing! When I disabled the optimized code....no listings. So the optimizations definitely help.
    ...
  47. Thanks Paul. I'll try that. It happened again...

    Thanks Paul. I'll try that. It happened again today but I saw this before reformatting ;) Let me try the edits you suggest and see if it is able to read the card.
  48. Hmmm...pretty sure there's been no ESD, and I've...

    Hmmm...pretty sure there's been no ESD, and I've never pulled or inserted the card while the board is powered. It's weird how it's happened to 3 different cards. In fact, while the board is...
  49. Arduino 1.8.1 TeensyDuino 1.35 Update: It's...

    Arduino 1.8.1 TeensyDuino 1.35

    Update: It's happening again. I can access individual files, but when I try to list all files on the SD card it fails on the first iteration. I had to copy all...
  50. I'm using SanDisk Ultra 8G SD cards, and I'm...

    I'm using SanDisk Ultra 8G SD cards, and I'm having intermittent issues still. I replaced what I thought was a faulty card with a new one and everything seemed to work, but then all of a sudden...
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