How to Use Light slot Sensor Module - 10mm: Examples, Pinouts, and Specs

The Light Slot Sensor Module - 10mm (Manufacturer: TinyTronics, Part ID: SKU: 001785) is a compact and efficient sensor designed to detect light levels. Its small 10mm form factor makes it ideal for applications where space is limited. This module is commonly used in automation, robotics, and control systems to detect the presence or absence of light, enabling tasks such as object detection, line following, and environmental monitoring.

• Object detection in conveyor systems
• Line-following robots
• Light-sensitive automation systems
• Environmental light monitoring
• Optical encoders for motion tracking

Below are the key technical details of the Light Slot Sensor Module - 10mm:

The module has a 3-pin header for easy interfacing. Below is the pinout:

1. Power the Module: Connect the VCC pin to a 3.3V or 5V power source and the GND pin to the ground of your circuit.
2. Connect the Output: Attach the OUT pin to a digital input pin of your microcontroller or logic circuit.
3. Position the Sensor: Place the module in the desired location where it can detect light or objects passing through its slot.
4. Read the Output: Monitor the OUT pin. It outputs a HIGH signal when light is detected and LOW when no light is present.

• Power Supply: Ensure the module is powered within its operating voltage range (3.3V - 5V). Exceeding this range may damage the sensor.
• Ambient Light: Avoid placing the module in areas with excessive ambient light, as it may affect detection accuracy.
• Mounting: Secure the module firmly to prevent misalignment or movement during operation.
• Debouncing: If the module is used in a high-speed application, consider implementing software debouncing to filter out noise in the output signal.

Below is an example of how to connect and use the Light Slot Sensor Module with an Arduino UNO:

• Connect the VCC pin of the module to the 5V pin on the Arduino.
• Connect the GND pin of the module to the GND pin on the Arduino.
• Connect the OUT pin of the module to digital pin 2 on the Arduino.

// Light Slot Sensor Module Example Code
// This code reads the output of the sensor and prints the status to the Serial Monitor.

const int sensorPin = 2; // Pin connected to the OUT pin of the sensor
int sensorState = 0;     // Variable to store the sensor state

void setup() {
  pinMode(sensorPin, INPUT); // Set the sensor pin as input
  Serial.begin(9600);        // Initialize serial communication at 9600 baud
}

void loop() {
  sensorState = digitalRead(sensorPin); // Read the sensor output
  
  if (sensorState == HIGH) {
    // If the sensor detects light, print "Light Detected"
    Serial.println("Light Detected");
  } else {
    // If no light is detected, print "No Light Detected"
    Serial.println("No Light Detected");
  }
  
  delay(500); // Wait for 500ms before reading again
}

1. No Output Signal

   • Cause: Incorrect wiring or loose connections.
   • Solution: Double-check all connections, ensuring the VCC, GND, and OUT pins are properly connected.

2. False Triggering

   • Cause: Excessive ambient light or electrical noise.
   • Solution: Shield the sensor from ambient light or use a pull-down resistor on the OUT pin to stabilize the signal.

3. Sensor Not Detecting Light

   • Cause: Misalignment or obstruction in the sensor slot.
   • Solution: Ensure the sensor is properly aligned and free from obstructions.

4. Overheating

   • Cause: Operating the module beyond its voltage or current limits.
   • Solution: Verify the power supply voltage and current are within the specified range.

Q1: Can this module detect infrared light?
A1: No, this module is designed to detect visible light. For infrared detection, use a dedicated IR sensor.

Q2: Can I use this module with a 3.3V microcontroller?
A2: Yes, the module operates within a voltage range of 3.3V to 5V, making it compatible with 3.3V systems.

Q3: What is the maximum detection range of the sensor?
A3: The sensor can detect light or objects within a range of 0mm to 10mm.

Q4: Is the module waterproof?
A4: No, the module is not waterproof. Avoid exposing it to moisture or water.

By following this documentation, you can effectively integrate the Light Slot Sensor Module - 10mm into your projects and troubleshoot any issues that arise.