How to Use Sensor temperatura y humedad: Examples, Pinouts, and Specs

The SH-T10, manufactured by Sensirion, is a highly reliable sensor designed to measure and provide accurate readings of temperature and humidity in its environment. This versatile component is widely used in various applications, including HVAC systems, weather stations, industrial automation, and home automation systems. Its compact design and ease of integration make it a popular choice for both hobbyists and professionals.

1. Power Supply: Connect the VCC pin to a power supply within the range of 2.4V to 5.5V. Connect the GND pin to the ground of the power supply.
2. I2C Communication: Connect the SDA (data) and SCL (clock) pins to the corresponding I2C pins on your microcontroller (e.g., Arduino UNO).
3. Pull-up Resistors: Ensure that the SDA and SCL lines have pull-up resistors (typically 4.7kΩ) to the VCC.

• Power Stability: Ensure a stable power supply to avoid fluctuations that could affect sensor readings.
• I2C Address: The default I2C address for the SH-T10 is 0x44. Ensure no address conflicts on the I2C bus.
• Environmental Factors: Avoid placing the sensor in direct sunlight or near heat sources to ensure accurate readings.
• Calibration: Although the SH-T10 is factory-calibrated, periodic calibration may be necessary for critical applications.

#include <Wire.h>

#define SH_T10_ADDRESS 0x44

void setup() {
  Wire.begin();
  Serial.begin(9600);
  delay(1000); // Allow some time for the sensor to initialize
}

void loop() {
  float temperature, humidity;
  if (readSensorData(temperature, humidity)) {
    Serial.print("Temperature: ");
    Serial.print(temperature);
    Serial.println(" °C");
    Serial.print("Humidity: ");
    Serial.print(humidity);
    Serial.println(" %RH");
  } else {
    Serial.println("Failed to read from SH-T10 sensor");
  }
  delay(2000); // Wait for 2 seconds before the next reading
}

bool readSensorData(float &temperature, float &humidity) {
  Wire.beginTransmission(SH_T10_ADDRESS);
  Wire.write(0xE5); // Command to read temperature and humidity
  if (Wire.endTransmission() != 0) {
    return false; // Transmission error
  }
  delay(20); // Wait for the sensor to process the command
  Wire.requestFrom(SH_T10_ADDRESS, 6);
  if (Wire.available() != 6) {
    return false; // Not enough data received
  }
  uint16_t rawTemp = (Wire.read() << 8) | Wire.read();
  uint16_t rawHumidity = (Wire.read() << 8) | Wire.read();
  temperature = -45 + 175 * (rawTemp / 65535.0);
  humidity = 100 * (rawHumidity / 65535.0);
  return true;
}

1. No Data from Sensor:

   • Solution: Check the wiring connections, especially the SDA and SCL lines. Ensure pull-up resistors are in place.

2. Inaccurate Readings:

   • Solution: Ensure the sensor is not exposed to direct sunlight or heat sources. Verify the power supply is stable.

3. I2C Address Conflict:

   • Solution: Ensure no other devices on the I2C bus share the same address (0x44). If necessary, change the address of the conflicting device.

• Check Connections: Ensure all connections are secure and correct.
• Use a Multimeter: Verify the voltage levels on the VCC and GND pins.
• Library Compatibility: Ensure you are using a compatible library for the SH-T10 sensor.
• Sensor Placement: Place the sensor in an environment representative of the area you wish to measure.

By following this documentation, users should be able to effectively integrate and utilize the SH-T10 temperature and humidity sensor in their projects. For further assistance, refer to the Sensirion datasheet and support resources.