Hello! I want to change my "bulb" screen for an OLED screen in my car. I have 8 bulbs (showing what door is opened, etc) so 8 inputs on Arduino. When you open door 1 it turns on 2 bulbs, one showing the car and other what door is opened. Now what I need is when the door is opened then the voltage c…

Digital input on OLED I2C

system May 10, 2018, 7:12pm 12

Perhaps pin 2 is floating.

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