Forum Rule: Always post complete source code & details to reproduce any issue!

Search:

Type: Posts; User: Keith_M

Page 1 of 2 1 2

Search: Search took 0.00 seconds.

  1. That's what I thought as well .. and there is a...

    That's what I thought as well .. and there is a history of that with this display ..

    BUT I can't figure out why the one that doesn't tri-state correctly on pin 8 can function properly when I move...
  2. ILI9488 and teensy 4 and touch 2046 and ILI9488_T3

    Okay .. this is just an observation of which I'm totally puzzled . I purchased 2 X ili9488 from the same vendor ... both displays work fine . I did have to drop the MISO line off the display portion...
  3. Good Idea on the SMD sample kit I was not...

    Good Idea on the SMD sample kit I was not thinking of that .. I'm good on what has to be done .. I have other buy display screens that are SPI now so familiar with 4 wire setup on my teensy 4.0 and...
  4. Yes ..thats the panel , sorry I should have...

    Yes ..thats the panel , sorry I should have posted up the model I ..I need 3 x 10k for r1/r2/r3 on the top left of the board ..I just don't know the component size 1206/0805 ?
  5. Buydisplay 7" RA8875 ft5206 800 x 480 display jumper re-configuration

    I received the above display in the title ..but missed the proper configuration ..though it came configured for spi ,but jumpers are set up for 8080....I can re-do the jumpers , but there is a...
  6. Replies
    2
    Views
    59

    Disregard my post .. I had a conventional FFT...

    Disregard my post .. I had a conventional FFT running off a mixer and the second taking I/2 from a different source ... I thought about what you said .. walked away from it and fixed it .. thanks for...
  7. Replies
    2
    Views
    59

    Analyze_FFT256IQ

    Just a quick question ..

    I'm running a teensy 4.0 and rev "d" audio shield .. no issues
    I can generate the I/Q requirements and the the FFT Display works fine ... But I can only drive it via the...
  8. Hi Derek .. Just a thank-you for putting this...

    Hi Derek .. Just a thank-you for putting this library together .. I have a builders group on facebook for simple SDRs .. (starting projects) and your library is getting used by some of the members...
  9. Sucofunk..thanks for your reply ..Ill check that...

    Sucofunk..thanks for your reply ..Ill check that out ..and let you know
  10. I'll run up your sketch this weekend and see how...

    I'll run up your sketch this weekend and see how it goes..will post back ..

    Thank-you for all the hard work and sleuthing to get it going ...!!

    cheers
  11. ive not had much time to , get back to it yet...

    ive not had much time to , get back to it yet ...I was hoping the there would be a patch available or a library update on github ..regrettably , Ive not had "time" to really work through it ...
  12. Thanks for posting that up ...I got as far as...

    Thanks for posting that up ...I got as far as getting the display up and running fine with the exception I could only get 1/3 of the touchscreen to work ..Initially thought the display was faulty but...
  13. Well ..what has happened is there are 2 versions...

    Well ..what has happened is there are 2 versions of the touch controller gsl1680E and fsl 1680F ..."E" has been discontinued .."F" is the current which means that there is new firmware ..which is...
  14. I'm using the ra8875 5" display from buydisplay...

    I'm using the ra8875 5" display from buydisplay ..with i2c ..on a teensy 4.0.. I have tried the libraries from Wolfman, the Scallwar release and the ESTBLC release ...all of them have the same...
  15. ra8875/GSL1680 .teensy 4.0 ..touch panel functional but an issue

    Okay I have the GSL1680 up and running from the github example ..there were array bounds issues which I corrected in clear_Reg(0 and reset() ..and the code compiles fine

    The touch function works...
  16. 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...
  17. 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...
  18. 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 !
  19. Yes the goal is fs/4 ..thanks for the code snippit

    Yes the goal is fs/4 ..thanks for the code snippit
  20. 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
  21. Thankyou very much for sleuthing that out...

    Thankyou very much for sleuthing that out ..greatly appreciated ..!!!
  22. 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
  23. 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...
  24. 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?
  25. 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...
  26. 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...
  27. 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
  28. 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...
  29. 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...
  30. 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!
  31. Was not expecting that ...!!!..

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

    Anyhow ..Will swap the regulator out ...have a 10 pack here lol
  33. 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...
  34. 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..!!..
  35. 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
  36. 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...
  37. 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...
  38. 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...
  39. 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 .....
  40. 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...
  41. 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 ..
  42. 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...
  43. 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...
  44. Replies
    9
    Views
    509

    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
  45. Replies
    9
    Views
    509

    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 ???
    ...
  46. Replies
    9
    Views
    509

    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 ...
  47. Thanks for the info ...I appreciate the...

    Thanks for the info ...I appreciate the response.?now to go and fix my filters ..lol
  48. 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...
  49. 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...
  50. Replies
    9
    Views
    509

    WOW .. KurtE .. thanks for the links and all...

    WOW .. KurtE .. thanks for the links and all ..greatly appreciated .. was not expecting that .. !!!
Results 1 to 50 of 78
Page 1 of 2 1 2