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I've set-up a GPIO port to output. With an external multi-meter, I've noticed that the potential stays at 1.8V in respect to the ground.

I've checked in respect with the same ground, and the 3V3 and 5V ports are actually giving the correct potential.

When I check the ports with "gpio readall", I notice that the port is set on and off. However, the potential stays at 1.8V. Does anyone has a possible solution?

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