How to Use KEYES薄膜壓力感知器: Examples, Pinouts, and Specs

The KEYES薄膜壓力感知器 (Manufacturer Part ID: KYS017) is a pressure-sensitive sensor designed to detect changes in pressure applied to its surface. Manufactured by Arduino, this sensor is ideal for applications requiring touch-sensitive controls, pressure measurement, or force detection. Its thin, flexible design makes it suitable for integration into compact and portable devices.

• Touch-sensitive control panels
• Pressure-sensitive input devices
• Robotics and automation systems
• Wearable technology
• Force measurement in industrial applications

The following table outlines the key technical details of the KEYES薄膜壓力感知器:

The KEYES薄膜壓力感知器 has a simple two-pin interface. The pin configuration is as follows:

1. Connect the Sensor:

   • Connect the Signal pin to an analog input pin on your microcontroller (e.g., Arduino UNO).
   • Connect the GND pin to the ground (GND) of your circuit.

2. Power the Circuit:

   • Ensure the microcontroller is powered with a voltage between 3.3V and 5V, which is within the sensor's operating range.

3. Read the Output:

   • The sensor outputs an analog voltage that varies with the applied pressure. A higher pressure results in a lower resistance, which translates to a higher voltage reading.

• Avoid Overloading: Do not apply pressure beyond the specified range (10kg/cm²) to prevent damage to the sensor.
• Stable Connections: Ensure secure and stable connections to avoid noise or inaccurate readings.
• Calibration: For precise applications, calibrate the sensor by mapping the analog output to the actual pressure values.
• Environmental Conditions: Use the sensor within the specified temperature range (-20°C to 60°C) to ensure reliable operation.

Below is an example code snippet to read the sensor's output using an Arduino UNO:

// Define the analog pin connected to the sensor
const int sensorPin = A0; 

void setup() {
  Serial.begin(9600); // Initialize serial communication at 9600 baud
}

void loop() {
  int sensorValue = analogRead(sensorPin); // Read the analog value from the sensor
  float voltage = sensorValue * (5.0 / 1023.0); // Convert to voltage (0-5V range)
  
  // Print the sensor value and voltage to the Serial Monitor
  Serial.print("Sensor Value: ");
  Serial.print(sensorValue);
  Serial.print(" | Voltage: ");
  Serial.println(voltage);
  
  delay(500); // Wait for 500ms before the next reading
}

• The analogRead() function reads the sensor's output and converts it to a value between 0 and 1023.
• The voltage is calculated based on the Arduino's 10-bit ADC resolution and a 5V reference.

1. No Output or Incorrect Readings:

   • Cause: Loose or incorrect connections.
   • Solution: Double-check the wiring and ensure the Signal pin is connected to an analog input.

2. Fluctuating Readings:

   • Cause: Electrical noise or unstable power supply.
   • Solution: Use a decoupling capacitor (e.g., 0.1µF) between the Signal pin and GND to filter noise.

3. Sensor Not Responding to Pressure:

   • Cause: Sensor may be damaged or pressure exceeds the specified range.
   • Solution: Inspect the sensor for physical damage and ensure the applied pressure is within the 0-10kg/cm² range.

Q1: Can this sensor detect very light touches?
A1: Yes, the sensor is sensitive to light pressure, but the output may need amplification or calibration for precise detection of very small forces.

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

Q3: How do I map the sensor's output to actual pressure values?
A3: Perform a calibration by applying known pressure values and recording the corresponding analog output. Use this data to create a mapping function in your code.

Q4: Is the sensor waterproof?
A4: No, the sensor is not waterproof. Avoid exposing it to liquids or high humidity environments.

By following this documentation, you can effectively integrate and utilize the KEYES薄膜壓力感知器 in your projects.