SKU: SENS-3334
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Generic AHT20+BMP280 Temperature Humidity Air Pressure Module with Soldering Pin - I2C 4P Grove Interface

₹135.00 (Inclusive of all taxes)
Out of Stock

This integrated environmental sensing module combines an AHT20 digital temperature and humidity sensor with a BMP280 barometric pressure sensor on a single compact board. It communicates via I2C interface and operates from a wide 2.0V to 5V DC supply, making it compatible with Arduino, Raspberry Pi, ESP32, and other 3.3V/5V logic platforms.

Features

  • Integrated AHT20 & BMP280 sensors for temperature, humidity, and pressure.
  • I2C digital communication interface with configurable address.
  • Wide operating voltage range: 2.0V to 5V DC.
  • Compact board design with 4-pin Grove connector and solderable pins.
  • Low power consumption suitable for battery-powered IoT applications.

Out of stock

Description

The module integrates two high-performance digital sensors: the AHT20 for temperature and relative humidity, and the BMP280 for barometric pressure and altitude estimation. Both sensors provide calibrated, stable digital outputs via a shared I2C bus, simplifying system wiring and firmware development. The AHT20 utilizes a MEMS capacitive humidity sensing element and a band-gap temperature sensor, while the BMP280 employs a piezoresistive pressure sensing element.

Designed for seamless integration, the board supports a wide 2.0V to 5V logic level, accommodating both 3.3V and 5V microcontroller systems without level shifting. The inclusion of both a 4-pin Grove connector and a row of solderable pins offers flexibility for rapid prototyping or permanent PCB installation. This module is engineered for applications requiring reliable, multi-parameter environmental data with minimal footprint and power draw.

Key Features

  • Triple-parameter sensing: ambient temperature, relative humidity, and barometric pressure.
  • High-accuracy digital sensors (AHT20 & BMP280) with factory calibration.
  • Single I2C bus interface simplifies connection to microcontrollers.
  • Wide supply voltage range supports diverse embedded platforms.
  • Ultra-compact PCB footprint for space-constrained designs.
  • Dual interface options: plug-and-play Grove connector and solderable header pins.
  • Low operating current ideal for portable and wireless sensor nodes.
  • Stable digital output with fast response time for dynamic monitoring.

Applications

  • Portable weather stations and environmental monitoring loggers.
  • Indoor air quality (IAQ) monitoring systems for smart buildings.
  • Altitude tracking and weather forecasting for drones and UAVs.
  • Data logging nodes in agricultural and greenhouse automation.
  • Battery-powered IoT sensor networks for smart home automation.

Technical Specifications

Sensor CombinationAHT20 + BMP280
Measured ParametersTemperature, Relative Humidity, Barometric Pressure
Communication InterfaceI2C
Operating VoltageDC 2.0V – 5V
Board Dimensions15 mm x 15 mm (1.5 cm x 1.5 cm)
Interface Options4-Pin Grove Connector + Solderable Pins
Weight2 g

Frequently Asked Questions

What is the I2C address of this AHT20+BMP280 module?

The AHT20 typically uses the I2C address 0x38, and the BMP280 uses the default address 0x76 or 0x77. Since both sensors are on the same bus, you must communicate with each using its unique address. Some modules may include address selection jumpers; check your specific board.

Can I power this module directly from a 5V Arduino pin?

Yes, the module's wide operating voltage range of 2.0V to 5V DC means it can be safely powered from a 5V pin on an Arduino Uno or similar board. For 3.3V systems like ESP32 or Raspberry Pi, you can also use the 3.3V supply pin. Ensure the I2C logic levels are compatible with your microcontroller.

How do I connect this module using the Grove connector?

The 4-pin Grove connector follows the standard Grove I2C pinout: Pin 1 (SDA), Pin 2 (SCL), Pin 3 (VCC), and Pin 4 (GND). Simply plug it into a Grove I2C hub or a compatible base shield connected to your development board. For direct wiring, use the solderable pins with the same signal mapping.

What is the measurement range and accuracy of the sensors?

The AHT20 typically measures temperature from -40°C to 85°C with ±0.3°C accuracy and humidity from 0% to 100% RH with ±2% accuracy. The BMP280 measures pressure from 300 hPa to 1100 hPa with ±1 hPa absolute accuracy. Both provide stable, calibrated digital readings suitable for most environmental monitoring applications.

Package Includes

  • 1 x AHT20+BMP280 Temperature Humidity Air Pressure Module

Additional Information

Weight 0.002 kg
Dimensions 1.5 × 1.5 cm