AHT20

Quick Decision Notes

AHT20 is indexed as a sensors part from Aosong. ChipScout tracks it by practical maker-facing dimensions: interfaces, library readiness, estimated price, field-level sources, and whether the page is strong enough for selection rather than only lookup.

Technical Specifications

Interfaces and Library Support

Source Resources

Pinout Table

Pinout is not yet source-verified. Use the table as an integration checklist, then confirm exact pins against the module vendor page before wiring hardware.

Common Wiring

Arduino Example

#include <Wire.h>

void setup() {
  Serial.begin(115200);
  Wire.begin();
  Serial.println("AHT20 I2C scan");
}

void loop() {
  byte count = 0;
  for (byte address = 1; address < 127; address++) {
    Wire.beginTransmission(address);
    if (Wire.endTransmission() == 0) {
      Serial.print("Found I2C device at 0x");
      Serial.println(address, HEX);
      count++;
    }
  }
  Serial.print("Device count: ");
  Serial.println(count);
  delay(3000);
}

MicroPython Example

from machine import Pin, I2C
import time

i2c = I2C(0, scl=Pin(1), sda=Pin(0), freq=100000)
print("AHT20 I2C addresses:", [hex(x) for x in i2c.scan()])

while True:
    # Replace with the verified AHT20 driver read call.
    time.sleep(2)

Recommended Development Boards

Alternative Model Reasons

Common Questions

Alternatives and Related Parts