How to Use NO TOUCH BUTTON: Examples, Pinouts, and Specs

The NO TOUCH BUTTON (Manufacturer: BOXTEL, Part ID: NO TOUCH) is a type of switch that can be activated without physical contact. It typically uses infrared or capacitive sensing technology to detect the presence of a hand or object. This component is ideal for applications where hygiene is a concern, such as in medical facilities, public restrooms, and other environments where minimizing physical contact is crucial.

1. Power Supply: Connect the VCC pin to a 5V DC power supply and the GND pin to the ground.
2. Output Signal: Connect the OUT pin to a digital input pin on your microcontroller (e.g., Arduino UNO).
3. Sensing Distance Adjustment: If your application requires adjusting the sensing distance, use the ADJ pin. This can be done by connecting a potentiometer or using a fixed resistor.

+5V (Arduino) ----> VCC (NO TOUCH BUTTON)
GND (Arduino) ----> GND (NO TOUCH BUTTON)
Digital Pin (Arduino) ----> OUT (NO TOUCH BUTTON)

• Power Supply: Ensure a stable 5V DC power supply to avoid erratic behavior.
• Interference: Avoid placing the NO TOUCH BUTTON near strong electromagnetic fields or reflective surfaces, as this may affect its performance.
• Mounting: Install the button in a location where it is easily accessible but protected from direct exposure to water or other contaminants.

/*
  NO TOUCH BUTTON Example Code
  This code demonstrates how to use the NO TOUCH BUTTON with an Arduino UNO.
  The button's output is read and used to control an LED.
*/

const int buttonPin = 2; // Pin connected to the OUT pin of NO TOUCH BUTTON
const int ledPin = 13;   // Pin connected to the onboard LED

void setup() {
  pinMode(buttonPin, INPUT); // Set button pin as input
  pinMode(ledPin, OUTPUT);   // Set LED pin as output
  Serial.begin(9600);        // Initialize serial communication
}

void loop() {
  int buttonState = digitalRead(buttonPin); // Read the button state

  if (buttonState == HIGH) {
    digitalWrite(ledPin, HIGH); // Turn on the LED
    Serial.println("Button Activated");
  } else {
    digitalWrite(ledPin, LOW);  // Turn off the LED
  }

  delay(100); // Small delay to debounce the button
}

1. Button Not Responding:

   • Solution: Check the power supply connections and ensure the VCC and GND pins are correctly connected.
   • Tip: Verify that the sensing distance is within the specified range (3-15 cm).

2. False Triggers:

   • Solution: Ensure there are no reflective surfaces or strong electromagnetic fields near the button.
   • Tip: Adjust the sensing distance using the ADJ pin if necessary.

3. Intermittent Operation:

   • Solution: Check for loose connections or unstable power supply.
   • Tip: Use a decoupling capacitor (e.g., 0.1µF) across the VCC and GND pins to filter out noise.

• Q: Can the NO TOUCH BUTTON be used outdoors?

  • A: While the button can operate in a wide temperature range, it is not waterproof. It should be protected from direct exposure to water.

• Q: How do I adjust the sensing distance?

  • A: The sensing distance can be adjusted using the ADJ pin. Connect a potentiometer or a fixed resistor to fine-tune the distance.

• Q: What is the maximum sensing distance?

  • A: The maximum sensing distance is 15 cm, but it can be adjusted to as low as 3 cm.

By following this documentation, users can effectively integrate and troubleshoot the NO TOUCH BUTTON in their projects, ensuring reliable and hygienic operation.