3.3V
3.3V
10mA
50Hz/60Hz
1-5 cm
>95%
<5%
10ms
12mm x 12mm x 3mm
-20C to 70C
Applications
By providing a reliable and accurate means of detecting eye blinks, the Eye Blink Sensor opens up new possibilities for innovative applications and research in various fields.
Eye Blink Sensor DocumentationOverviewThe Eye Blink Sensor is a novel IoT component designed to detect and count eye blinks in real-time. This sensor is ideal for various applications, including healthcare, accessibility, and human-computer interaction. This documentation provides an in-depth guide on how to use the Eye Blink Sensor, including code examples in different programming languages.Technical SpecificationsOperating Voltage: 3.3V - 5V
Communication Protocol: I2C, UART
Resolution: 16 bits
Sampling Rate: up to 100 Hz
Dimensions: 20mm x 15mm x 5mmCode Examples### Example 1: Basic Blink Counting using ArduinoIn this example, we'll demonstrate how to use the Eye Blink Sensor with an Arduino board to count the number of eye blinks.Hardware RequirementsArduino Uno or compatible board
Eye Blink Sensor module
Breadboard and jumper wiresSoftware RequirementsArduino IDE (version 1.8.x or later)Code
```c
#include <Wire.h>#define EYE_BLINK_SENSOR_ADDRESS 0x44int blinkCount = 0;void setup() {
Serial.begin(9600);
Wire.begin();
}void loop() {
uint16_t blinkData = 0;
Wire.requestFrom(EYE_BLINK_SENSOR_ADDRESS, 2);
blinkData = (Wire.read() << 8) | Wire.read();
if (blinkData > 500) { // adjust threshold value as needed
blinkCount++;
Serial.print("Blink count: ");
Serial.println(blinkCount);
}
delay(50);
}
```
### Example 2: Real-time Blink Detection using Python and Raspberry PiIn this example, we'll demonstrate how to use the Eye Blink Sensor with a Raspberry Pi to detect and display eye blinks in real-time using Python.Hardware RequirementsRaspberry Pi (any model)
Eye Blink Sensor module
Breadboard and jumper wiresSoftware RequirementsPython 3.x
RPi.GPIO library
matplotlib library (optional)Code
```python
import RPi.GPIO as GPIO
import time
import matplotlib.pyplot as pltGPIO.setmode(GPIO.BCM)
GPIO.setup(17, GPIO.IN, pull_up_down=GPIO.PUD_UP) # set up GPIO 17 as inputblink_data = []while True:
blink_state = GPIO.input(17)
if blink_state:
blink_data.append(1)
else:
blink_data.append(0)
time.sleep(0.01) # sample at 100 Hzif len(blink_data) > 100: # display last 100 samples
plt.plot(blink_data[-100:])
plt.show(block=False)
plt.pause(0.01)
plt.close()
```
### Example 3: Blink-based Gesture Recognition using C++ and ESP32In this example, we'll demonstrate how to use the Eye Blink Sensor with an ESP32 board to recognize specific eye blink gestures.Hardware RequirementsESP32 board
Eye Blink Sensor module
Breadboard and jumper wiresSoftware RequirementsESP32 Arduino Core (version 1.0.6 or later)
Gesture recognition library (e.g., KNN or SVM)Code
```cpp
#include <WiFi.h>
#include <GestureRecognition.h>#define EYE_BLINK_SENSOR_PIN 32GestureRecognition gr; // initialize gesture recognition objectvoid setup() {
Serial.begin(115200);
pinMode(EYE_BLINK_SENSOR_PIN, INPUT);
gr.begin();
}void loop() {
int blinkData = digitalRead(EYE_BLINK_SENSOR_PIN);
gr.addSample(blinkData);
if (gr.recognizeGesture()) {
int gestureID = gr.getGestureID();
Serial.print("Recognized gesture: ");
switch (gestureID) {
case 0: Serial.println("Blink once"); break;
case 1: Serial.println("Blink twice"); break;
case 2: Serial.println("Blink thrice"); break;
default: Serial.println("Unknown gesture"); break;
}
}
delay(50);
}
```
These examples demonstrate the basic usage of the Eye Blink Sensor in various contexts. For more advanced applications, refer to the sensor's datasheet and technical documentation for detailed information on programming and integration.