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  1. Thanks for the insight ...yes Matlab is in the...

    Thanks for the insight ...yes Matlab is in the home here ..(daughter is in engineering at University of Waterloo)..If I remember correctly you are in Halifax ..Im west of Totonto ..cheers ..and...
  2. I was curious ..I see that you can generate your...

    I was curious ..I see that you can generate your filter parameters with a function call /method ....can the code be modified to produce Hilbert filters with +/- 45 deg phase offset ..it be a nice...
  3. Wow .. nice ..I was going to run at fs/4 ..this...

    Wow .. nice ..I was going to run at fs/4 ..this will help alot ..thank You very much !
  4. Yes the goal is fs/4 ..thanks for the code snippit

    Yes the goal is fs/4 ..thanks for the code snippit
  5. No problem Paul ..if I notice anything I'll post...

    No problem Paul ..if I notice anything I'll post up ..Corbet, thanks for the info I want to heteodyne down as well ..cheers
  6. Thankyou very much for sleuthing that out...

    Thankyou very much for sleuthing that out ..greatly appreciated ..!!!
  7. Most sdr receivers are running 6k to 11k for...

    Most sdr receivers are running 6k to 11k for their intermediate frequency ...I'd like to run it higher ..around 20k
  8. Well ..no.. it's not neaningless as I'm sampling...

    Well ..no.. it's not neaningless as I'm sampling at 192k right now... What I'm doing is creating an SDR receiver..The higher sampling frequency gives me a larger spread bandwidth wise to view on...
  9. Audio lib ..Oscillator object can it be run above 22k ?

    can the oscillator object in the audio lib run past 22 kHz ..?? Or be pushed beyond 22 kHz?
  10. ISSUE Resolved

    Issue resolved .. after reading some remarks in the AudioSDR.H File .. this does generate a compiler error but apparently ... ( its okay) ....

    So will test and see what happens ..

    please...
  11. Some help on compiling AudioSDR to t4.0

    Okay .. teensy 4.0 .. followed the instructions for moving the files to the appropriate directories..(however 3 of the files were placed in the teensy3 directory .. not sure how to deal with the...
  12. okay issue resolved ...had 2 copies of the...

    okay issue resolved ...had 2 copies of the library .. edited the wrong one ...(and then promptly deleted it when I figured it out) ..please ignore my post above
  13. Well ... I built the ZL2CTM time domain...

    Well ... I built the ZL2CTM time domain processing SDR .. but have scaled it up to a 5" touchscreen ..Spectrum display and Waterfall display, I'll let you know how it goes as a lot of my touchscreen...
  14. I've got a functional SDR up and running but...

    I've got a functional SDR up and running but would like to run this code ... Currently running teensy 4.0 / QRP Labs quadrature receiver and SI5351... my issue is I can't get it to compile due to the...
  15. Regrettably yes ....from EBay ..I was going to...

    Regrettably yes ....from EBay ..I was going to swap one out of the bag but didn't trust them ,,got in my van and hit the electronic store for the real deal .....lol ...NOW I KNOW!
  16. Was not expecting that ...!!!..

    Was not expecting that ...!!!..
  17. Anyhow ..Will swap the regulator out ...have a 10...

    Anyhow ..Will swap the regulator out ...have a 10 pack here lol
  18. I'm running 12v into the 7805 with a heatsink...

    I'm running 12v into the 7805 with a heatsink ..but there is a problem with the regulator ..I have a second identical circuit I built and it's running fine ..checked it out pin for pin and end to end...
  19. Okay ..1 problem identified ..7805 regulator is...

    Okay ..1 problem identified ..7805 regulator is ..well not regulating ..checked voltage at regulator and it has dropped to 3.65 volts from 5v !!!..so the display would just blank out..!!..
  20. maybe I need more bypass caps on the external...

    maybe I need more bypass caps on the external supply .. will add a few and see what happens
  21. I'm running ground isolation now ..the device...

    I'm running ground isolation now ..the device uses 2 x 600 ohm isolation transformers ......still working my way through it
    I tried putting the ra8875 display on a separate regulated 5 vold supply...
  22. I had the same problem .. took me a day to figure...

    I had the same problem .. took me a day to figure out what was going on .was wondering if you got it resolved ... I fixed mine by removing the MISO connection that connects to the TFT ..
    its all...
  23. yes .. I re-read my post my head is going in too...

    yes .. I re-read my post my head is going in too many directions ...sorry!

    1. ra8875 is connected to power on the teensy 4.0/audio shield combination ..
    2. teensy 4.0 produces a 1024fft which is...
  24. Hash noise from display getting into audio when screen updates ..

    okay teensy 4.0 , ra8875 display , audio shield ..currently running off usb power the ra8875 is powered off vcc and gnd looks good ..also running metro at 250ms as the display was way to frantic .....
  25. Ok...thanks guys for the help ...I feel really...

    Ok...thanks guys for the help ...I feel really silly ..I had a quick peek at that scroll.ino before ..(well glanced over it) ..as it was scrolling text ..I failed to realize that it scrolled for...
  26. Thank-you very much,! yes ..I'll have a good look...

    Thank-you very much,! yes ..I'll have a good look at this ...and see what I can do with it .. thank-you for your time ..Ill post up after I see if I can make it happen ..
  27. RA8875_t4 and teensy 4.0 bumping graphics rows down on the display programmatically

    I'm still working my way through the RA8875 library .. But I'll ask anyway ... I currently am running an array (100 X 512).. a new line is added to the top of the array and the following rows get...
  28. RA8875 SPI Teensy 4.0 can I get a little speedup ?

    Not that knowledgeable on SPI but learning ...

    Is there a way I can push the speed up on the SPI buss for the RA8875 Display ?

    I'm running the BuyDisplay 800 x 480 display but don't know how I...
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    Thanks Kurt .. Well .. I'll run it up and see...

    Thanks Kurt .. Well .. I'll run it up and see what happens .. if I can get it to light up and run a demo .. I can go from there..

    cheers K
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    Does this make sense ?... ( Sorry I lack going...

    Does this make sense ?... ( Sorry I lack going beyond 1 device on SPI ..So uncharted ground for me LOL

    SSD2828 CS T4.1 Pin 38 CS1
    SSD2828 RESET T4.1 Pin ???
    ...
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    Hi KurtE .. I took a look at the code for the...

    Hi KurtE .. I took a look at the code for the 7.84" display .. I'm good for the connection on the RA8876 standard SPI

    ER_TFT0784_t3 tft = ER_TFT0784_t3(
    // Teensy pin // Display ...
  32. Thanks for the info ...I appreciate the...

    Thanks for the info ...I appreciate the response.?now to go and fix my filters ..lol
  33. Thank you very much ..I was getting confused...

    Thank you very much ..I was getting confused across models ..what does the teesy 4 default to naturally if you don't define it ? ?.and question #2 ..does changing the above parameter allow you to...
  34. Teensy 4.0 44.1k or 44.117k for sample rate

    I'm using Iowa hills Hilbert filter designer ..in the designer its asking for sampling frequency ..dies the teensy 4.0 run at 44.1 or 44.117 kHz..I feel stupid asking this ..but I was unable to find...
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    WOW .. KurtE .. thanks for the links and all...

    WOW .. KurtE .. thanks for the links and all ..greatly appreciated .. was not expecting that .. !!!
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    second spi channel ?? teensy 4.1

    I recently received a weird 7.85" 1280 x 400 TFT display ...

    I did a search and I found a few posts where people have them working and I checked github so there is hope ...

    anyhow it uses an...
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    thanks SkipBerry .. I'll switch over and give it...

    thanks SkipBerry .. I'll switch over and give it a shot just to see what happens
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    Okay update .. I reset the teensy 4.0 back to day...

    Okay update .. I reset the teensy 4.0 back to day 1 ..reconnected the line, re-loaded the graphics test and now its working ... I had to turn it on and off a few times to make it happen so its...
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    Well the only other display I've purchased to...

    Well the only other display I've purchased to date is a 5" ra8875 from buydisplay .. other then that its the ili9341s .. good display ! .. easy to use and code up ..

    Anyhow , my ordered ili9341s...
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    yes I'm wired identical to the pinout you linked...

    yes I'm wired identical to the pinout you linked to at PJRC .. Both were purchased from PJRC
    .. but I had not opened it up as I didn't need it at the time ... as a matter of fact I just ordered 2...
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    teensy 4.0 and Ili9341 2.8"

    Hi All .. I have a 2.8" screen and have it running Some of the examples fine with the ili9341_t3 Library ..

    I connect the pin 11 MISO Line from the Teensy 4.0 to T_DIN of the ILI9341 board .. Im...
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    audio library fft beyond 1024

    I see some are emplementing a solution outside of the audiolibrary , but wondered if there will be provisioning in the library for fft2048 down the road ..

    Thanks ..
  43. Kurt .. I'm up and running .. I reviewed the...

    Kurt .. I'm up and running .. I reviewed the documentation and somewhere in there I had the reset tied high .. anyhow ..pulled the wire and we're all good ..Silly me!

    now to work my way over to...
  44. Yes ..teensy 4.0 ...over spi ...this board has...

    Yes ..teensy 4.0 ...over spi ...this board has multiple grounds as well as multiple lines for supply voltage..5 lines for ground 4 for +5 ...I'm starting to wonder if the current draw is too high if...
  45. Thanks for the reply Kurt ...well ..I'm wired up...

    Thanks for the reply Kurt ...well ..I'm wired up but not a peep out of it running the simple initialization script ...a little stumped to say the least ...dont even see the backlight flash ...new...
  46. BuyDisplay ER-TFTM050A2-3(CTP) 5" capacitive touch ra8875

    I've been going through the connection doc for the TFT display .. 40 pin ..`

    for the Capacitive touch there is a WAKE command .. which puts the touch IC to sleep when asserted low... as I don't...
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    Thanks KurtE .... will reference that library and...

    Thanks KurtE .... will reference that library and see what happens ... if I can get it up on the T4 with the audio board running I'll be pretty happy ..

    good project while in lockdown ...lol
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    swap out ili9341 to ra8875 display

    I'm currently running a teensy 4.0 ..rev d audio board and an ili9341 display no issues.... touch working as well.. ... first time working with a TFT display so its a simple one ..

    I've been...
  49. Weird TFT display like nextion but I2c (Think I bought a unicorn)

    Okay .. I'm good on ili9341's and LCD 1602s and LCD 2004s .. I had an opportunity to grab a 3.5" capacitive touch display that was i2c based as opposed to SPI ..(its an H35B-IC from Hundatech)..
    so...
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    Got off the plastic protoboard ...sketches for...

    Got off the plastic protoboard ...sketches for both TFT and touch are running fine ..no issues ...
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