KCD3 Round Switch / I/O 4-pin 2 Position 15A 250V

Description

What it is

The KCD3 switch is a round switch with 2 positions and 4 pins. It is designed to control the flow of current in electronic circuits.

Features

• Type: Round Switch
• Positions: 2
• Maximum Current: 15A
• Maximum Voltage: 250V
• Pins: 4

What it is for

The KCD3 switch is ideal for controlling electronic devices in 2-position circuits. It can be used, for example, in automatic lighting projects, where the switch can act as a presence detector.

Tutorial: How to Use KCD3

The KCD3 switch is ideal for controlling electronic devices in 2-position circuits. Useful for beginners and intermediate makers.

What you need

• KCD3
• Arduino Uno
• 10kΩ Resistor
• Test Lead

Steps

1. 1. Assemble the KCD3 on a protoboard.
2. 2. Connect pins 1 and 2 to the VCC and GND of the Arduino.
3. 3. Connect pin 3 to digital pin 2 of the Arduino.
4. 4. Connect pin 4 to the GND of the Arduino.
5. 5. Connect to your Arduino using the software IDE.
6. 6. Load the following code.
7. 7. Check if the switch works correctly.
8. 8. Check the datasheet for additional specifications.

Example code

int ledPin = 13;
int kcd3Pin = 2;

void setup() {
  pinMode(kcd3Pin, INPUT);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  if (digitalRead(kcd3Pin) == HIGH) {
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }
}

Mini project

Create an automatic lighting system using the KCD3 switch as a presence sensor.

Common mistakes

• Connect pin 3 to VCC instead of a digital pin.
• Omit checking the datasheet.
• Do not use a pull-up resistor.
• Ignore configuring the pin as INPUT.

Recommended accessories

• Arduino Uno
• 10kΩ Resistor
• Test Lead
• Protoboard

Frequently asked questions

Can I use another Arduino board?
Yes, the KCD3 switch is compatible with many Arduino boards, but check the maximum voltage.

Which resistor should I use?
Use a 10kΩ resistor as a pull-up.

What are the current limits?
The KCD3 supports up to 15A, but check the maximum voltage.

Can I use this switch for AC circuits?
Yes, but make sure the maximum voltage is compatible.