Using Switches in Autonomus

28-10-2009, 13:23

EricVanWyk EricVanWyk is offline

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Re: Using Switches in Autonomus

Quote:

Originally Posted by rsisk

Could you explain what a pull-up resistor is and why you need it in this situation?

A pull-(up/down) resistor weakly pulls an input either high or low. This prevents the input from floating around randomly and gives it a "Unless you dictate otherwise, I am high (or low if it is a pull down)." If you've ever had a digital input "flutter" or be otherwise unreliable, you probably needed a pull-___ resistor.

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