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  1. Replies
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    @miciwan Great write up. This is my favorite...

    @miciwan

    Great write up. This is my favorite line:
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    So, is it a 12 sample delay for the ADC and then...

    So, is it a 12 sample delay for the ADC and then another 12 sample delay for the DAC?
  3. Phil's Lab is going to be doing a mixed signal...

    Phil's Lab is going to be doing a mixed signal PCB design course and I'm hoping it'll answer some of these problems. Here's the preview:

    https://www.youtube.com/watch?v=foQeAhx_j9Y
  4. Yeah, the control register names seem to be...

    Yeah, the control register names seem to be different for T4. But it seems clear from page 2344 of the RT1060 manual that you should be able to resume a connected USB host. Good luck.
  5. Not sure if this will help, but here's an old...

    Not sure if this will help, but here's an old thread that you can check out:

    I woke my Mac from sleep with a teensy 3.0
  6. Thread: System Wake

    by daperl
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    Give this thread a try: ...

    Give this thread a try:

    https://forum.pjrc.com/threads/26649-I-woke-my-Mac-from-sleep-with-a-teensy-3-0
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    Thank you. Keep up the excellent work and looking...

    Thank you. Keep up the excellent work and looking forward to your next update.
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    Very nice. Can you further explain your HI-Z...

    Very nice. Can you further explain your HI-Z module: What it is doing and maybe post a schematic.
  9. @jcugnoni How did you fry your Teensy 3.6?

    @jcugnoni

    How did you fry your Teensy 3.6?
  10. Yes, that magically fixed everything. Thank you...

    Yes, that magically fixed everything. Thank you very much.
  11. I'm running macOS 10.9.5 and I had this same...

    I'm running macOS 10.9.5 and I had this same problem installing Teensyduino 1.3.6 on top of Arduino 1.8.2. I solved it with Cristohper RF's solution by replacing the Teensyduino...
  12. Dude, c'mon. These low cost computers need USB...

    Dude, c'mon. These low cost computers need USB peripherals. What better than an intelligent, programmable Teensy-based USB peripheral. You just spent a lot of time on your Audio Library tutorial. ...
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    They don't connect to each other, they just share...

    They don't connect to each other, they just share the i2c bus. Done.

    https://www.abelectronics.co.uk/docs/stock/raspberrypi/iopi/IOPi-schematic.pdf

    https://www.abelectronics.co.uk/p/18/IO-Pi
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    Quotes from SparkFun: "Hate to rain on your...

    Quotes from SparkFun:

    "Hate to rain on your parade, this board doesn’t have the Lipo charger (just the full sized version). We’re updating the description now."

    "Honestly I have no idea where...
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    Is support for a USB audio interface device still...

    Is support for a USB audio interface device still near the top of your audio library priority list? Begging is not beneath me.
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    Now that the Audio API has stabilized, are there...

    Now that the Audio API has stabilized, are there any plans to move this code to the main trunk?
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    I woke my Mac from sleep with a teensy 3.0

    Here's the diff of usb_desc.c:


    --- usb_desc.c.fail 2014-09-10 13:31:49.000000000 -0700
    +++ usb_desc.c 2014-09-15 16:29:19.000000000 -0700
    @@ -316,7 +316,8 @@
    NUM_INTERFACE, ...
  18. Okay, if you have a Mac with the proper...

    Okay, if you have a Mac with the proper development tools, here's some code:


    // compile with gcc -Wall -O2 -framework CoreFoundation -framework IOKit -o power power.c

    #include <stdio.h>...
  19. I'm going to start here: ...

    I'm going to start here:

    https://developer.apple.com/library/mac/samplecode/USBPrivateDataSample/Listings/USBPrivateDataSample_c.html

    According to the comments, I should be able to get other...
  20. As far as I can tell, I'll have to write some...

    As far as I can tell, I'll have to write some form of a device driver.
  21. The Teensy is powered by the computer and the...

    The Teensy is powered by the computer and the Teensy still runs when the computer is asleep.
  22. Can a Teensy 3.x detect when my computer sleeps and wakes?

    Is there some serial USB event that can notify my sketch when the USB connected computer (a Mac in this case) sleeps and wakes?
  23. Replies
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    Thanks, I'll take a look.

    Thanks, I'll take a look.
  24. Replies
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    Where do I file a request for SPI transactions in...

    Where do I file a request for SPI transactions in the Mirf library for support of the Sparkfun nRF24L01+ modules?
  25. Replies
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    Sounds excellent. Can you tell us how much...

    Sounds excellent. Can you tell us how much memory you're predicting for the Cortex-M4F chip? If so, how much?
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    I use this RN-XV WiFly module with an XBee...

    I use this RN-XV WiFly module with an XBee footprint:

    https://www.sparkfun.com/products/10822

    When in command mode, setting the time via a UDP time server request is as simple as:

    ...
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    I went to a linux machine. lsusb and dmesg said...

    I went to a linux machine. lsusb and dmesg said the usual about the responsive Teensy 3.1. lsusb and dmesg said absolutely nothing about the unresponsive Teensy 3.1.
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    This was very unusual behavior. The computer...

    This was very unusual behavior. The computer crashed. I was looking at an unprogressed progress bar with the word "Erase" or "Erasing" in it, and then Boom! My computer rebooted. No beach balls,...
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    What was unusual is that I never see a progress...

    What was unusual is that I never see a progress bar with the word "Erase" in it when I'm uploading Teensy 3.1 sketches. I only ever see a progress bar with the word "Programming." What's with that?
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    On the unresponsive 3.1, I measured 4.99 Volts at...

    On the unresponsive 3.1, I measured 4.99 Volts at Vin, and 3.29 at 3.3V.

    On the unresponsive Teensy 3.1, here's what my system info says:

    2256

    On the responsive Teensy 3.1, this is the...
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    As another point of information, an Audio Adaptor...

    As another point of information, an Audio Adaptor Board is soldered to the Teensy 3.1. So, there's that. :(
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    My computer crashed during the erase stage...

    ...of a teensy 3.1 upload. I can't even upload Blink to it now. I tried holding down the reset button while plugging in the USB, but that didn't help. I successfully uploaded Blink on another...
  33. Does anyone know any good analog...

    Does anyone know any good analog transmitter/receiver boards or chips that work in these same ranges (433 MHz and above)? Something similar to what's used in baby monitors or wireless microphones.
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    The noise is the same through the headphone jack....

    The noise is the same through the headphone jack. I have a relatively complicated circuit, so I'll try to recreate the problem with a simpler circuit, but my requirements are to use this display...
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    How do I get this OLED to not cause buzzing when...

    How do I get this OLED to not cause buzzing when I use it with the audio shield? That's the real question.
  36. Thread: Audio Library

    by daperl
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    If I leave the CHIP_ANA_ADC_CTRL register at...

    If I leave the CHIP_ANA_ADC_CTRL register at 0x0000, can I somehow measure the p-p volts of my line-in values. I realize the ADC makes them 2-byte integers, but does that mean 0x7fff represents 3.3...
  37. Thread: Audio Library

    by daperl
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    @Paul In the PassThroughAnalog example you...

    @Paul

    In the PassThroughAnalog example you don't declare audioInput.
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    http://www.pjrc.com/store/header_14x1_d.html ...

    http://www.pjrc.com/store/header_14x1_d.html

    Can you post a picture of these 14x1 pins. Thanks.
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    When you say "audio processing object," are you...

    When you say "audio processing object," are you talking about things such as reverb, delay, chorus, ..., etc.?
  40. Thread: Intel Galileo

    by daperl
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    "So we've only had this on there for about an...

    "So we've only had this on there for about an hour or so, so it hasn't fully set. So I'm going to apply some pressure with my finger."

    I think I'm gonna wait for Z-Axis Conductive Tape 2.0.
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    Thanks, but would you mind being more specific...

    Thanks, but would you mind being more specific why?
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    Sorry to be off-topic, but speaking of scopes,...

    Sorry to be off-topic, but speaking of scopes, has anyone tried this all-in-one multi-platform product:

    http://my.bitscope.com/store/?p=view&i=product+BS120U

    From the summary:
  43. Replies
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    I already do this with the teensy 3 as a USB...

    I already do this with the teensy 3 as a USB serial device. Let me know if you get stuck.
  44. Not sure if it applys, but I just saw this: ...

    Not sure if it applys, but I just saw this:

    http://it.slashdot.org/story/13/10/09/1253209/dangerous-vbulletin-exploit-in-the-wild
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    Sorry if I confused you. I need the 5V step-up...

    Sorry if I confused you. I need the 5V step-up because I'm running the teensy3 off of a 3.7V battery, but if you're running off of USB power you can get your 5V from the teensy3 VUSB pin. So, when...
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    I'm not sure what you mean by intercepted, but as...

    I'm not sure what you mean by intercepted, but as long as the LCD doesn't need more than 100 mA, you can connect the step-up to the teensy 3.3V pin, and then connect the LCD board to the step-up 5V...
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    https://www.sparkfun.com/products/10968 No...

    https://www.sparkfun.com/products/10968

    No need to cut any pads. This 5v step-up breakout works great for me.
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    You can turn on full build information and error...

    You can turn on full build information and error reporting in the Arduino IDE. They're off by default. Look in Preferences for these options.
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    Thanks for the link. I'm sure many of us will be...

    Thanks for the link. I'm sure many of us will be watching with great interest.
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    So, when you plug your teensy 3 into a USB port,...

    So, when you plug your teensy 3 into a USB port, your computer will recognize the teensy as a USB Audio Device? And if so, will you then do isochronous transfers?
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