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With digital input, it doesn’t get any simpler than your basic button. Also called “momentary switches,” these components come in all shapes, sizes, and colors. They take care of the mechanical connections between a digital input and high or low voltage.
XBee radios can be configured for up to 8 digital input pins that can directly control the output pins on a second radio. In this tutorial, we’ll walk you through how to program the radio and wire up a simple button to an XBee so that you can use it to make your digital electronics project wireless.