[sdiy] OLED noise

Eric Brombaugh ebrombaugh1 at cox.net
Sun Sep 2 22:56:37 CEST 2018

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.


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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