Monthly Archive for: ‘November, 2012’

Arduino Tip : Built-in Pull-Up Resistors

Pullup Banner

I’ve just found out a pretty awesome feature on the Arduino, or rather on all ATmega 328Ps. Below is a simple circuit that uses an ordinary push button to light up an LED. Normally I’ll need a pull-up resistor as shown in the red box, but with the built-in pull up resistors, I can totally remove that part and save …

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