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•Created by JeremyCook on 12/10/2024 in #🟩-pcb-and-analog
How to Implement Scrolling Display for MIDI Inputs on Arduino Opta with SSD1306 OLED?
The most common stack up for 4 layers is
Signal
GND
Power
Signal
But I don’t t use it becauseI prefer not to change the reference layer when switching signals from top to bottom.
I prefer to use this
Signal
GND
GND+Power
Signal
In the above stack up, make sure the signal and power traces don’t cross, there must always be GND plane below the signal trace.
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