Indeed.
That's the power supply sequencing issue I mentioned in an earlier post.
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On Thu, May 6, 2021 at 08:59 AM, Stig oz8pz-oz8wsp-oz8wsr wrote:
If the voltage to the display is lower than the voltage to the micro, the voltage
on the input pins on the display could be higher than the supply voltage to the?
display, then there is a problem that might destroy the display.
So the idea with 2 separate?power supply, is perhaps not the best idea.
73, Stig, oz8pz
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