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    At this point, I've not made a decision either...

    At this point, I've not made a decision either way. I'll look into the audio tutorial some more and if I feel comfortable enough with the programming then I'll go that route.

    Thank you for all of...
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    I'm using the T4 dual ADC in sync mode to capture...

    I'm using the T4 dual ADC in sync mode to capture both channels in 6.3 usec(167Ks/s). Adding two 3-pole HP Bessel filters sequentially adds only 0.4 usec. There will be some software mixing of the...
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    Will this be compatible with the Adafruit board?...

    Will this be compatible with the Adafruit board?

    https://www.adafruit.com/product/3678
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    I looked at that and found a nice board from...

    I looked at that and found a nice board from Adafruit that would directly replace the function of a pair of MCP4725 boards. However, the library was written for the Due and other CPUs that show up as...
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    Problem Solved My Owon SDS-7102V scope found it...

    Problem Solved
    My Owon SDS-7102V scope found it all. It turns out that Wire1 commands do not work or they use different pins than A4 and A5. None on the top of the T4 were active. I changed...
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    It's now responding to speed changes by moving...

    It's now responding to speed changes by moving the Wire1.setClock() to just under the Wire1.begin() in the DAC library CPP file. However, I don't get the right output voltage and by calculation, it's...
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    When using Wire, I had no control over the speed....

    When using Wire, I had no control over the speed. When switching to Wire1, my loop time dropped from 384usec to 109usec for 20 passes. However, using Wire1.setClock() does not produce a change in...
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    I've discovered that the I2C bus is running at...

    I've discovered that the I2C bus is running at 100KHz no matter what I do to change it. The value of TWBR is 72 and it should be 12. I set it as my 400KHz default and the MCP4725 library does the...
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    Works fine now. I had it installed when I was...

    Works fine now. I had it installed when I was working on a project that used three Teensy boards and had to see and program all of them. Now it's just one board at a time so will uninstall Ty....
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    I've got the TyCommander installed so it...

    I've got the TyCommander installed so it apparently grabs the connection first. Next time I update Arduino I'll try it before installing Ty.
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    Use the serial plotter instead of the monitor to...

    Use the serial plotter instead of the monitor to get a visual picture of the waveform. Also, a sine wave does hover near it's min and max values compared to the central region, dV/dT ~ 0.

    PS...
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    The Adafruit library switches the bus to...

    The Adafruit library switches the bus to 400KHz(TWBR=12), writes the data, then switches back to the users default, usually 100KHz. I run mine at 400KHz and can bump it to 888KHz(TWBR=1) but the DAC...
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    Points well taken. I will likely end up with the...

    Points well taken. I will likely end up with the PJRC shield but want to finish my search for just a DAC breakout.

    My 3-pole Bessel IIR filter takes only a few usec to run both channels with the...
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    I found another chip, CS4344, which would work...

    I found another chip, CS4344, which would work but no breakout board or library yet. I can work with either I2S or SPI.
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    I was not going to use the audio board as I have...

    I was not going to use the audio board as I have most of the code already written. I just need an output DAC that is fast. The Adafruit I2C DAC breakout, MCP4725, runs at 400KHz but is way too slow....
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    I found this board, the Adafruit I2S Stereo...

    I found this board, the Adafruit I2S Stereo Decoder - UDA1334A Breakout which would also work except for one reason. The library is incompatible with the T3.2, T4.0, and probably others. Is there a...
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    I read some of it earlier today and will go over...

    I read some of it earlier today and will go over it again. I looked at Paul's tutorial and the design tool and have a diagram of what I think I need. Will order the audio shield today to have some...
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    Hearing aid using T4 and audio shield

    I've been working on a hearing aid project and initially used a T3.2 and two Adafruit MCP4725 DACs. The method was to use synchronized ADC stereo inputs, filter a sample of the input with a 3-pole...
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    Both install correctly now using beta2. Thanks...

    Both install correctly now using beta2. Thanks for the info.
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    The ZIP version of V1.8.3 works OK but...

    The ZIP version of V1.8.3 works OK but Teensyduino and TyTools won't install. The former won't enable the Next button after the folder is selected. The later says the folder is not valid. What seems...
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    Info: You can uninstall earlier versions in the...

    Info:
    You can uninstall earlier versions in the 8.x series and keep the latest, now 8.1.0. However, when uninstalling the first old version, you will lose the Start/Program entry, the desktop icon,...
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    I'm finding one oddity with the new Eagle. When...

    I'm finding one oddity with the new Eagle. When new versions are installed, there is a folder for each but only one start menu item for the latest near the top of the list. The old versions treated...
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    As linuxgeek suggests, we don't know what...

    As linuxgeek suggests, we don't know what Autodesk might do in the future with Eagle. I've kept Eagle 7.6 and 7.7 installed but also have the latest, 8.1.0. You can run either version but you will be...
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    I've tested two T32s tied together directly using...

    I've tested two T32s tied together directly using Serial1 and was able to get 4.5Mbps without using CTS/RTS. However, the 32 byte packets were sent where each T32 had nothing else to do but this...
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    Here's the eBay seller. ...

    Here's the eBay seller.

    http://www.ebay.com/itm/Adafruit-CP2104-Friend-USB-to-Serial-Converter-3-3v-and-5v-pid-3309-/182374011320?rmvSB=true
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    The Adafruit board has all the serial signals but...

    The Adafruit board has all the serial signals but does not appear to have a selectable 3v3 output to power the Arduino. You could add a jumper wire to go from the adapter 5V to the Arduino Vin and...
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    The Amazon board does not have all of the serial...

    The Amazon board does not have all of the serial signals available and the Vcc selector is a circuit trace jumper. However, if you have a dedicated use, and the necessary signals, then it will likely...
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    The breakout board I mentioned in my previous...

    The breakout board I mentioned in my previous post is the only one that brings all possible serial signals out to available pins. It also has a 3V3/5V jumper block for Arduino operating voltage...
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    This may help you. I use a T32 connected to a...

    This may help you. I use a T32 connected to a laptop running a Lazarus program using an...
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    The data sheet says it's uni-directional. Put...

    The data sheet says it's uni-directional. Put meters on both A and A' output and see if they switch in a quadrature fashion. Maybe there's output on only one pin and the other is floating.
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    Yes, a 5" w/touchscreen, 640x480, and library...

    Yes, a 5" w/touchscreen, 640x480, and library functions similar to the ILI99341. That would be my standard display/input for almost all the projects.
  32. @Paul Do you know of any particular problem with...

    @Paul
    Do you know of any particular problem with the Owon SDS7102?
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    Check the buffer size again. I'm getting 128 on a...

    Check the buffer size again. I'm getting 128 on a T3.2 and it seems strange that the T3.6 would be less.

    I've tested the hardware serial between two T3.2's and got 4.5Mbps with 128 byte packets....
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    I think it's 128 bytes. However, you could try...

    I think it's 128 bytes. However, you could try just six single keys for P/p, I/i, and D/d for the three parameters up/down. That would be faster than typing a string.
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    On my project, the touch screen does use a CS...

    On my project, the touch screen does use a CS pin.


    #define TS_CS_PIN 8 // Touchscreen chip select pin
  36. Thread: Teensy Qt

    by Arctic_Eddie
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    I've found that when you start an instance of the...

    I've found that when you start an instance of the IDE and TyQt for each board connected to the PC and assign the correct comport number, the uploads go to the right location.

    I've also found that...
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    @Paul Do whatever you need to do to stay in...

    @Paul
    Do whatever you need to do to stay in business. Your product features, quality, support, and innovations are unique.
  38. Determine the box area that contains the data and...

    Determine the box area that contains the data and use:

    tft.fillRect( xorigin, yorigin, xwidth yheight, ILI9341_BLACK ); // Clear the text area

    Then write your new data.
  39. These are the libraries needed to make the PJRC...

    These are the libraries needed to make the PJRC display/touchscreen work correctly.



    #include <ILI9341_t3.h> // The PJRC display
    #include <font_Arial.h> ...
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    Higher Rate From FrequencyTimer2

    I'm trying to interface an OV5642 camera module to a T3.6. I'm not getting the response at the I2C address shown in the data sheet but another, 0x3C. It may be due to the XCLK signal running at too...
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    That's a little beyond my capability, and desire...

    That's a little beyond my capability, and desire at this time. I've got a procedural work-around that will help so I'll use that for the time being. Version 1.6.5-rc5 worked the way I want but I'd...
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    IDE Sketch Open Yields New Window

    I often need multiple IDE instances open with several Arduinos boards, monitors, and comports. That all works fine. With IDE 1.6.5-rc5, a new sketch replaced the one shown at startup, which I prefer....
  43. NotePad++ also works and there are customization...

    NotePad++ also works and there are customization schemes for C++ and maybe Arduino. It also works well just for viewing library .h and .cpp files.
  44. I know in synced mode, you have to select both...

    I know in synced mode, you have to select both ADC0 and ADC1 on separate pins. In differential mode, is there a requirement for how/which ADC pins are selected?
  45. I had problems in the T32 in using the dual...

    I had problems in the T32 in using the dual synced ADC. I had to select two channels whereby both ADCs are used. Does this same situation apply when using the differential mode.
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    +1 on SPIN. I'm just starting a project to...

    +1 on SPIN. I'm just starting a project to combine an ILI9341 touch display with an ArduCam OV5642 or OV2640, whichever works first. The camera libraries seem to be intended for Uno and Mega boards...
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    Just tested the ILI9341 touch screen display...

    Just tested the ILI9341 touch screen display running a modified calibration program and all is fine.

    Trying to get an ArduCam OV5642 module to compile but numerous problems with SD calls, and not...
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    I hesitated doing that as I didn't want to...

    I hesitated doing that as I didn't want to increase the 'viewed' count and encourage the spammer. By just hovering over the title, I could see the content. Usually, the title alone is enough of a...
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    Some forums require a new member to have their...

    Some forums require a new member to have their first, and sometimes second, post approved by a moderator before it can be viewed by the general membership. Maybe the new forum software that Paul...
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    Here's my calibrate procedure. Use a pointed...

    Here's my calibrate procedure. Use a pointed plastic or wooden stylus and locate the touch screen values for the upper-left and lower-right corners centered over each of the two small white squares....
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