AHT20 – Esp32.co.uk

Esp32.co.uk

ESPHome, Home Assistant Integration, Sensors & Components

AHT20 with ESP32 and ESPHome: Wiring, Calibration and Home Assistant

Connect an AHT20 temperature and humidity sensor to ESP32 and ESPHome. Covers 0x38 wiring, AHT20 variant setup, calibration offsets, filtering, self-heating, placement, condensation and Home Assistant.

panakos
22 September 2026

Sensors & Components

Best Temperature & Humidity Sensor for ESP32: SHT45 vs BME280 vs AHT20 vs DHT22

Quick Summary (TL;DR):If the project is specifically about measuring temperature and relative humidity as accurately as possible, the SHT45 is the clear winner: Sensirion specifies approximately ±1.0% RH and ±0.1°C typical accuracy, very low long-term drift, a fast digital I²C…

panakos
1 September 2026
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