Category: Arduino Projects

AHT20 is a temperature and humidity sensor that utilizes a MEMS semiconductor capacitive humidity sensor and a standard on-chip temperature sensor. It has better performance and is more stable in harsh environments compared to DHT11, DHT22 which are commonly used temperature and humidity sensors. It has an astounding humidity measuring range of 0-100% RH with humidity accuracy as low as ±2% at 25℃. It comes in an SMD package and its output is calibrated in standard I2C format. In the article “Interfacing AHT20 with Arduino”, you will learn how to…

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How to Arduino Thermocouple Interface: In this article, you will learn about interfacing K-type thermocouples and display temperature in Celsius and Fahrenheit on I2C LCD. Introduction of Thermocouple A thermocouple consists of a pair of dissimilar metal wires joined together at one end, called a sensing junction, and terminated at the other end, called the reference junction which is maintained at a known constant temperature called the reference temperature. When the sensing junction and the reference junction are at different temperatures, a potential difference gets produced which causes a current…

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Here in this article, you will learn about the RTC module and how to interface this module with Arduino and ESP boards like Arduino MEGA, Arduino UNO, Arduino NANO, ESP32, Node MCU, and Arduino NANO. How to interface RTC module with Arduino and ESP Board RTC acronymic for Real-Time Clock is an electronic Integrated Circuit (IC) that keeps track of time around the clock. It is more like a computer clock where once we set it up gives us accurate time even after the power outage. Before we delve into…

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PH is a scale with which we can determine whether the water-based solution is acidic or basic. PH is represented as the power of hydrogen or the potential of hydrogen (Source: Wikipedia). With the help of electrodes, we can measure PH of solution electronically which could be more beneficial to measure and automate PH of the aquarium, or hydroponic or aquaponic. So, in this article, we will learn How to make Arduino PH Meter. After completing this video one can Know about electrode and their working method Calibrate the module…

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Interfacing DS18B20 Temperature Sensor with Arduino: This article is all about DS18B20 and its interfacing with arduino. DS18B20 comes in two variants: Normal and waterproof version. Normal version is available TO-92 and uSOP. Let’s start with introduction. Description of DS18B20 It is digital programmable temperature sensor based on one wire communication i.e. it requires only data line and common GND. Power supply is optional because this sensor can drain require power supply from data line and this mode called parasite mode. DS18B20 can provide different temperature resolution is 0.50C, 0.250C,…

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One of the most common analog temperature sensors used for temperature monitoring and controlling is LM35. According to the manufacturer, LM35 is a precise centigrade temperature sensor, but the reality is a bit different when we directly wire this sensor with Arduino. There are various reasons for fluctuation in output. Here in the article ” LM35: How to get Stable Temperature Reading” we will address almost all the reasons and solving one by one. But before that let’s see how this sensor work. Basic Working of LM35 According to the…

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Temperature and humidity are one of the essential parameters of environment for various projects like greenhouse, home automation, weather station or other various industrial automation. Sometime we also need to find feel temperature or apparent temperature that we feel and it is called Heat Index. Heat Index can be defined as an index which accounts both air temperature and relative humidity of an environment. In this article we are going to build a temperature, humidity and heat index meter using arduino and DHT11. Circuit of Temperature, Humidity and Heat Index…

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