Mercury switch optical switch module KY-017

Description

What it is

The KY-017 mercury switch module is a mercury optical switch. Used to detect inclination, this switch relies on the movement of mercury within a chamber to close or open a circuit.

Features

• SKU: ARD0010700
• Price: 1.72 €
• Type: mercury optical switch
• Model: KY-017

What it is for

The KY-017 mercury switch module is ideal for projects requiring motion sensitivity. It can be used to create simple alarm systems, motion sensors, or to control the opening or closing of a circuit based on inclination. It is compatible with Arduino and other microcontrollers.

How to Use the KY-017 Mercury Switch

The KY-017 mercury switch is a mercury optical switch ideal for projects requiring motion sensitivity. Useful for beginners and intermediates, it is used to control the opening or closing of a circuit.

What you need

• KY-017 mercury switch module
• Arduino
• 10kΩ resistor
• power cable

Steps

1. 1. Connect the VCC of the KY-017 to the 5V of the Arduino.
2. 2. Connect the GND of the KY-017 to the GND of the Arduino.
3. 3. Connect a 10kΩ resistor between the S (sense) pin and the A0 pin of the Arduino.
4. 4. Connect the GND pin of the KY-017 to the GND of the resistor.
5. 5. Upload the following code to your Arduino.
6. 6. Verify the exact pin positions on the datasheet.
7. 7. Try moving the switch and observe the values on the serial monitor.
8. 8. Adapt the code for your project.

Example code

int sensorPin = A0;
void setup() {
  Serial.begin(9600);
}

void loop() {
  int sensorValue = analogRead(sensorPin);
  Serial.println(sensorValue);
  delay(100);
}

Mini project

Create a simple alarm system. Connect an LED to pin 13 of the Arduino and modify the code to turn on the LED when the switch is closed.

Common mistakes

• Connect the VCC to 3.3V instead of 5V.
• Omit the 10kΩ resistor.
• Connect the S pin directly to GND.
• Do not verify the pin positions on the datasheet before connecting.

Recommended accessories

• LED
• 220Ω Resistor
• Arduino UNO
• Power Supply Cable

Frequently asked questions

How can I verify the pin positions?
Check the KY-017 datasheet.

Does the KY-017 work with Arduino Nano?
Yes, but make sure the Arduino Nano supports analog pins.

Does the KY-017 work with Arduino Mega?
Yes, but check the pin compatibility.