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First Time Using Pull-Up / Pull-Down Resistors, Did I Do It Right?
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Topic: First Time Using Pull-Up / Pull-Down Resistors, Did I Do It Right? (Read 280 times)
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Max Holdcroft
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First Time Using Pull-Up / Pull-Down Resistors, Did I Do It Right?
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July 28, 2024, 12:08:14 pm »
Hey all,
Basically the title. I have a push button connected to a pin on a microcontroller that I want to be able to detect the pushing of. I've connected this to a pull-up resistor. I'm running the microcontroller off 2.8v input, and the resistor is 4.7K ohms. This is my first time using these, and I just wanted to check I did it right.
Thanks in advance!
Max
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ledtester
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Re: First Time Using Pull-Up / Pull-Down Resistors, Did I Do It Right?
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Reply #1 on:
July 28, 2024, 12:10:42 pm »
Yes you did it right.
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rich t
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Re: First Time Using Pull-Up / Pull-Down Resistors, Did I Do It Right?
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Reply #2 on:
July 28, 2024, 12:31:14 pm »
Many microcontrollers also have built-in pull-ups you can enable in software.
In general, the one thing you don't want to do is pull up beyond the microcontroller supply voltage.
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