Hello - if I want to connect a 3.3V GPIO PIN from my MCU to another module that accepts 3.3V input voltage on its pin. I understand I can't simply connect them directly as this may cause too much current inrush, so good practice is to put a resistor, say 10K ohms, between the pins. My question is: should I simply put a 10K resistor between the pins with no ground connection, or should it be a pull-down resistor that is connected to ground?
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