In this post I have explained a simple op amp based thermocouple temperature meter circuit which can be used for measuring high temperatures in the range of 100 °C to 1000 °C, in heaters, furnaces, kilns tec. What is a Thermocouple A thermocouple is a simplest and the cheapest form of temperature sensor device, built […]
Meter
Ultrasonic Distance Meter Circuit Using 16×2 LCD
In this article I will show how to construct an ultrasonic distance meter circuit using Arduino and 16×2 LCD. We are also going to see what an ultrasonic module is, how it works and how it can be used to measure distance. What is ultrasonic? An average healthy human being can hear frequencies ranging from […]
How to Make LED Air Pollution Meter Circuit with Arduino
In this project I will show how to construct an air pollution meter using MQ-135 sensor and arduino. The pollution level in the air is indicated by series of 12 LED. If higher the number of LEDs glows, the higher the pollution content in the air and vice versa. Overview This project can prove […]
Arduino Frequency Meter Using 16×2 Display
In this article I will show how to construct a digital frequency meter using Arduino whose readings will be showcased on a 16×2 LCD display and will have a measuring range from 35 Hz to 1MHz. Introduction Being electronics enthusiast, we all would have come across a point where we need to measure frequency in […]
Simple Frequency Meter Circuits – Analogue Designs
The following simple analogue frequency meter circuits can be used for measuring frequencies which may be either sine wave or square wave. The input frequency which is to be measured must be at least 25 mV RMS, for optimal detection and measurement. The design facilitates a relatively wide range of frequency measurement, right from 10 […]
RTD Temperature Meter Circuit
In this post I have explained the making of an RTD temperature meter circuit, and also learn about different RTDs and their working principles through formulas. What’s an RTD A RTD or resistance temperature detector works by detecting the difference or an increase in the resistance of the sensor metal when it’s subjected to heat. […]