AHT10 Temperature & Humidity Sensor (I2C)

A high-precision digital temperature and humidity sensor from Aosong with an I2C interface. Used in Workshop 03 - Connect and Read Sensor Data to read environmental data and post it on-chain as transaction metadata or NFTs.

Features

• Temperature: -40°C to +85°C
  • Accuracy ±0.3°C (typical), resolution 0.01°C
• Humidity: 0–100% RH
  • Accuracy ±2% RH (typical), resolution 0.024% RH
• I2C interface (SDA, SCL)
• Operating voltage: 1.8V – 6.0V (3.3V recommended)
• Low power consumption
• Factory calibrated - no user calibration needed
• Fast response time
• Compact SMD package

I2C address: 0x38 (fixed).

Resources

• AHT10 datasheet
• Adafruit AHTX0 library - supports AHT10 and AHT20.
• Adafruit AHT20 tutorial - same library, similar API.

Where to buy

• AliExpress
• Amazon US
• Amazon Germany

---

Adapted from the CardanoThings project, originally produced under Project Catalyst Fund 11. Source: github.com/CardanoThings.