Cherry MX Switch Breakout Hookup Guide

Contributors: jimblom
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Testing the Circuit

With just a power supply and a few wires, you can create a quick circuit to test out your switch, LED, resistor and diode. Wire up the "+" pin to 5V (or 3.3V). Then connect "-" and "1" together. And wire up "2" to ground. (If you didn't add a current-limiting resistor, make sure you add one externally! It can take the place of the wire from "+" to power, or 2 to ground.)

Breadboard test circuit

Now actuate the switch, and watch for the LED to illuminate.

Note that, if you've added the ghosting diode, this is the only polarity in which the switch will work -- pin 1 must be at a higher voltage than pin 2.