[time-nuts] WWVB teensy BPSK early experiments

Graham / KE9H ke9h.graham at gmail.com
Wed Nov 11 14:40:43 UTC 2020


John:
I suggest you try Chris Howard's
https://github.com/chris-elfpen/Teensy4WWVBsdr
You might have to adjust the I/O pins for Teensy 4.1 vs 4.0
I am having no problems with the display once I put in the source
termination resistor.
Been running for multiple days, so far.
--- Graham



On Tue, Nov 10, 2020 at 9:45 PM John C. Westmoreland, P.E. <
john at westmorelandengineering.com> wrote:

> Hello Time Nuts,
>
> I've been running some tests - I just had the screen 'white-out' problem
> happen again - I have a termination resistor on the SCK line (pin 13 on the
> Teensy 4.1) -
> so it appears this is related to the TFT screen updates - maybe a pixel
> write going out of bounds.  The Teensy is still running - but the screen
> can't be read.
>
> Note the current code I'm testing is here in case anyone is interested -
> it's from the PJRC forum:
> https://github.com/jwestmoreland/el_supremoWWVBsdr
>
> 73's,
> John
> AJ6BC
>
>
>



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