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Problems switching a relay

Daniel Richter last edited by

Hello,
i am having troubles trying to simply switch a rely on. I have connected a dual power source (JP1 unmounted). I have been trying to turn the relay on by activating the GPIOs but none of them worked. Any ideas?
Thanks,
Daniel
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tomas_hora administrators last edited by @Daniel Richter

@Daniel-Richter Relays are not connected to GPIO, they are connected via MCP23008 on the I2C bus, as stated in the documentation.
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