Mute
MeKENtronics
Why does your microcontroller register random button presses? ⚡ Meet the pull-up resistor! ​When a digital GPIO pin isn't connected to a solid voltage, it floats—acting like an antenna picking up surrounding electromagnetic noise. This leads to erratic code behavior and unexpected signal spikes! ​A Pull-Up Resistor fixes this by gently tying the GPIO pin to your supply voltage (3.3V or 5V) through a resistor (typically 10kΩ).
Follow
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