Ultra-high precision temperature and humidity sensor AHT10
Ultra-high precision temperature and humidity sensor AHT10
Blog Article
The first self-developed ultra-high-precision temperature and humidity sensor AHT10 from China Core uses standard IIC communication, ultra-small size, and extremely low power consumption, making it the best choice for all kinds of applications, even very demanding applications. AHT10 supports a wide range of operating power supply voltages. The device can provide low-cost and low-power advantages for all kinds of common application scenarios. The temperature and humidity sensors are factory calibrated in a high-precision constant temperature and humidity chamber, and directly output humidity, temperature and other information after temperature compensation. Users do not need to perform temperature compensation on humidity to obtain accurate temperature and humidity information.
The AHT10 is an advanced, fully calibrated, and highly integrated temperature and humidity sensor that provides reliable, precise environmental measurements. Designed with cutting-edge CMOSens® technology, it offers high performance in a compact and energy-efficient package, making it ideal for various applications ranging from consumer electronics to industrial monitoring systems.
Product Features
· Input voltage range: 1.8V to 3.6V
· Calibrated at the factory. The product has temperature compensation function
· Humidity accuracy: ±2% RH (typical value)
· Temperature accuracy: ±0.3℃ (typical value)
· With I²C interface
· Ultra-low power consumption
· SMD package
Application range
HVAC, dehumidifier, test and inspection equipment, consumer products, automobiles, automatic control, data loggers, weather stations, home appliances, humidity control, medical and other related humidity detection and control。
AHT10 Temperature and Humidity Sensor Troubleshooting
This guide outlines a systematic approach to troubleshoot and resolve common problems with the . Start by confirming that the hardware connections are correct, as wiring mistakes are the most frequent cause of issues. If you are sure the connections are correct, follow the below steps to debug common issues.
Sensor Not Detected on I2C Bus
Issue: The AHT10 sensor is not recognized on the I2C bus, resulting in communication failures.
Possible causes include incorrect wiring, insufficient power supply, or sensor malfunction.
Solution: Ensure proper wiring connections: connect VCC to 3.3V (as the AHT10 operates at 3.3V), GND to ground, SDA to the data line, and SCL to the clock line. Verify that the I2C address matches the sensor's default (0x38). Use an I2C scanner to detect the sensor's presence on the bus. If the sensor is still not detected, consider testing with a different microcontroller or replacing the sensor.
Compilation Errors When Using AHT10 Library
Issue: Compilation errors occur when attempting to use the AHT10 sensor with an Arduino board.
Errors such as 'stray '342' in program' or 'TwoWire' does not name a type' may appear.
Solution: Ensure that the correct library for the AHT10 sensor is installed and properly included in the sketch. Verify that the code does not contain any unintended characters or formatting issues, especially if copied from external sources. If errors persist, consider using alternative libraries compatible with the AHT10 sensor.
Inaccurate Temperature or Humidity Readings
Issue: The AHT10 sensor provides temperature or humidity readings that are inconsistent or incorrect.
Possible causes include sensor placement near heat sources, inadequate sensor initialization, or lack of calibration.
Solution: Position the sensor away from direct heat sources or sunlight to avoid skewed readings. Ensure that the sensor is properly initialized in the code before attempting to read data. While the AHT10 is factory-calibrated, if discrepancies persist, consider implementing software-based calibration adjustments based on known reference values.
Interference with Other I2C Devices
Issue: Connecting the AHT10 sensor alongside other I2C devices causes communication issues or device malfunctions.
Possible causes include the AHT10's fixed I2C address or improper bus management.
Solution: The AHT10 has a fixed I2C address (0x38), limiting the ability to use multiple AHT10 sensors on the same bus. To use multiple sensors, consider using an I2C multiplexer or selecting sensors with configurable addresses. Ensure that all devices on the I2C bus are functioning correctly and that there are no address conflicts.
Aosong (Guangzhou) Electronics Co., Ltd. is is a high-tech sensor enterprise integrating R&D, production and sales. The main products include humidity capacitors, humidity resistors, humidity sensors, temperature and humidity sensors, gas sensors, flow sensors, absolute humidity sensors, home appliance sensors, etc. In addition, it has successively invested in the development and production of meteorological sensors such as anemometers, rain gauges, oxygen sensors, and gas analyzers. Its products are widely used in aviation, aerospace, military industry, transportation, communications, chemicals, meteorology, medical care, agriculture, home appliances, intelligent manufacturing and other fields.