Fab Academy at AS220 Labs

April 26, 2010 10:09 PM

Machine button interface

by Shawn Wallace

machineButtonInterface.jpg

Here's a little board that can be used as a button interface to a three axis machine (X+/X-, Y+/Y-, Z-up, Z-down). It is implemented as a voltage divider, so the various button presses can be read on a single analog input pin. Here's the schematic:

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