Hello everyone,
Using DigitalWrite function on a digital output pin my Arduino Uno board generates a Square wave between +2.5V and -2.5V. (reference GND)
I would like to create a Square wave between 0V and + 5V.
Why the Square wave have 0V mean value instead of +2.5V?
post a schematic.
post an image of your project.
and
Post the code in code tags.
Please.
How were the measurements performed?
You've got your oscilloscope set to AC coupled.
This. An Arduino UNO can not output any value going below 0 Volts (Ground). If you set your scope's vertical input(s) to DC coupling you should see a wave form between 0.0 and about 5.0 volts.
Ron
Thank you for your advices after a reset of the oscilloscope the problem was resolved.
mark this item as solved.
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