Gravity: AHT20 Temperature and Humidity Sensor
AHT20 MEMS temperature and humidity sensor with Gravity I2C connector (address 0x38); 2–5 V supply, ±0.3 °C / ±2 %RH accuracy, 0.01 °C resolution. Low cost, low drift; suits HVAC, automotive, and general environmental monitoring.
Pinout
- +1
positive supply input
Type · PowerVoltage · DC 2V to 5V - -2
ground / negative supply
Type · GroundVoltage · 0V - C3
I2C clock
Type · I2C - D4
I2C data
Type · I2C
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| + | 1 | Power | positive supply input | DC 2V to 5V |
| - | 2 | Ground | ground / negative supply | 0V |
| C | 3 | I2C | I2C clock | |
| D | 4 | I2C | I2C data |
Pin details
4 connections- +1
positive supply input
PowerVoltage · DC 2V to 5V - -2
ground / negative supply
GroundVoltage · 0V - C3
I2C clock
I2C - D4
I2C data
I2C
Start wiring
I2C · SPI · Single data line · 3.3 – 5 V · Breakout
Confirm the data interface matches your host board.
Module pins: +, -. Schematik maps them to your board in the app.
Temp & humidity
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