Content for DHT22

DHT22

The DHT22 is a basic, low-cost digital temperature and humidity sensor. It uses a capacitive humidity sensor and a thermistor to measure the surrounding air, and spits out a digital signal on the data pin (no analog input pins needed). It's fairly simple to use, but requires careful timing to grab data. The only real downside of this sensor is you can only get new data from it once every 2 seconds, so when using our library, sensor readings can be up to 2 seconds old.

Raspberry Pi Temperature and CO2 Monitor

“Measure and display air quality with the Raspberry Pi. This project is ideal if you already have a Raspberry Pi running 24/7, e.g., as web server, printer server, pi-hole etc. Then you can easily add extra functionality like …

All in one clock

“Clock alarm temprture senseor and timer, all in one device using an arduino uno and RTC In this project we will make an arduino clock alarm with timer and a temperature sensor.”

Home Security Smart Clock IoT Emergency App Notification

“I made a Clock that not only display Time,Date, Temp & Hum but you can send message to the clock via Mobile App (Blynk) from anywhere in the World as long as you are connected to internet. And you can …

DHT22 Data to Google sheet Using ESP8266 without credential

“Here the DHT22 sensor is connected to ESP8266 NodeMCU and ESP8266 NodeMCU is connected to Internet through WiFi to send the DHT22. Here the DHT sensor is connected to ESP8266 NodeMCU and ESP8266 NodeMCU is connected to the Internet through …

Internet of things (IoT)-based solar tracker

“The proposed IoT solution can be employed in various fields to connect devices or things to the internet. This project presents a simple and low-cost IoT solution to monitor and control a smart dual-axis solar tracker system for performance evaluation …

Climate Chamber System

“Control and maintain stable relative humidity and temperature states to simulate natural conditions for experimental testing in the lab. Being ecologists, we investigate organisms and their responses to natural conditions, such as variations in temperature (T) and relative humidity (RH …

DHT22 Sensor with 16x2 LCD Screen

“Monitor Temperature & Humidity of a room on LCD Screen using Arduino Mega In this project, we are trying to monitor the Temperature and Humidity of a closed area like a Meeting/Conference room, Cabins, cubicles. So we have connected the …

Sensor Station

“Very simple station that shows: Temperature, Humidity, Heat index, Carbon Monoxide, Alcohol, Carbon dioxide, Toluene, Ammonium and Acetone I wanted to have a simple station that monitors: Temperature, Humidity, Heat index, Carbon Monoxide, Alcohol, Carbon dioxide, Toluene, Ammonium and Acetone …

DHT22 Sensor

“In this project guide, we show you how to make the popular DHT22 sensor. This DHT22 easily connects to a variety of microcontrollers to send digital temperature and humidity readouts. You can monitor temperatures on your phone, create an alarm …

Outdoor Sensor Using Low-Code

“Use the Arduino-HomeDing low-code library for ESP8266 to build and configure a sensor device with DHT22 or other environment sensors. Building an sensor for environment data on the outside can be done easily by using the HomeDing Arduino library, Here …