Switch, Micro SPDT, 15A, V-152-1C25

Description

This switch is a micro Single Pole Double Throw (SPDT) mechanical end stops. They are commonly used to help a robot sense the world around it. For example, in a CNC machine, the moving parts will back up until they contact the switch and then stop. This is called their “home” position.

Tutorial

• Connect one pole to ground (black), one to 5v (red), and one to signal (blue).
• Connect the signal line to an Arduino digital pin.
• Run this Arduino code:

  void setup() {
    Serial.begin(9600);
    pinMode(YOURPIN,INPUT);
  }
  
  void loop() {
    Serial.println(digitalRead(YOURPIN));
    delay(100);
  }

• Now open the serial window and watch the number change as you click the switch.

See Also

Switches on Wikipedia