[sdiy] OLED noise

Mike B bachmanm50 at gmail.com
Sun Sep 2 23:23:35 CEST 2018


Yes, basically the same as those on Adafruit.  I do think it is the
supplies on the display itself.  Going to reroute power and ground to it
and add some caps and isolation.  We'll see. And I'll let you know.

On Sun, Sep 2, 2018, 4:58 PM Eric Brombaugh <ebrombaugh1 at cox.net> wrote:

> OLEDs and WS28xx RGB LEDs all make a horrible racket due to their large
> currents and fast switching. The only way to mitigate this is to
> carefully isolate the supplies of the display system from the audio
> path. Use proper layout to avoid common ground current paths. Separate
> regulators & bypassing are needed - large caps and possibly even LC
> filters may help.
>
> Eric
>
> On 09/02/2018 01:37 PM, Mike B wrote:
> > I've been using those small.96" OLED for some time.. just noticed how
> > much digital noise it is impressing on the module... Anyone else notice
> > this?  What, if anything did you do about it.
> >
> >
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