htu21d

Smogly(formerly: Smogomierz) - simple and cheap PM 2.5 and PM10 sensor based on NodeMCU (ESP8266) or ESP32

Raspberry Pi Sensors

This is an Arduino library for HTU21D, Si7021 and SHT21 Digital Humidity & Temperature Sensor

HTU21D full-featured driver library for general-purpose MCU and Linux.

Weather Display (7.5in eInk) with an ESP32, indoor sensors, receiving data from OpenWeatherMap.org

Drivers and home automation projects for Raspberry PI.

An all-in-one ESP8266 based weather station.

Raspberry Tool for managing I2C modules. EEPROM (24c01-1024), PWM LED/Motor driver (PCA9632), I/O driver (PCA9557), Temp/Humid sensor (HDC1080, HTU21D), Fan controller with a PWM (EMC2301), Pressure ...

About This is an Arduino library for HTU2xD, Si70xx and SHT2x Digital Humidity & Temperature Sensor

ESP RCM - Room Climate Monitor with ESP8266, HTU21D, Si7021, AM2320

Nixie Library for clock development

A MagicMirror² module which peridocally calls configured scripts and sends the output as notification

BLE to MQTT Bridge using espressiff esp32 reading nRF52840 BLE-node. As a gateway includes Lux (BH1750), temperature and humidyty (HTU21D), CO2 and TVOC (CCS811)

Agent/device-based sensor mesh with a readable UI.

Homekit Compatible Temperature and Humidity Sensor - ESP32 - Arduino

Extended version of a WiFi Cloud Controller based on ESP8266 and Blynk, works with BME280, SHT3x, HTU21, DS18B20 probes for controlling temperature, humidity or both.

Environment control with Wemos D1 mini

A micropython library to measure humidity & temperature data from the htu21d sensor on ESP32

Nordic Semiconductor NRF SDK drivers for various IoT peripheral modules such as HTU21D temperature sensor etc.