Modern cars must have reverse parking sensors. These give sound and light signals to help driver avoid crash when going back. Sensors use infrared or ultrasonic to find objects behind car. This article for Reverse Car Parking Sensor Circuit using IC LM358 op-amp is to make simple reverse parking sensor circuit. Circuit is easy and […]
Sensors and Detectors
Simple Alcohol Detector Circuit using IC LM393
We show how to make Simple Alcohol Detector Circuit using IC LM393 This circuit uses LEDs, resistors, capacitor, MQ-3 sensor and LM393 IC. Alcohol detector find alcohol gas in air and give warning through light or sound. Today in this article we will talk about MQ-3 sensor. MQ-3 is common sensor for alcohol which is […]
Arduino Based Air Quality Monitoring Circuit
Arduino Based Air Quality Monitoring Circuit check bad stuff in air like CO2, VOCs and PM. It uses Arduino microcontroller and many sensors to check air quality. Arduino read sensor data and then send to computer or cloud or show on small screen (LCD). People like this design because it is cheap, easy and useful […]
How to Create a Water Level Sensor Circuit with Arduino
For fun and learning project. We learn basic electronics, coding and sensor uses. Here we will learn How to Create a Water Level Sensor Circuit with Arduino This guide teaches us how to make water sensor. It is good for stopping overflow, checking water in tank or auto watering plants. We can use Arduino Uno […]
Arduino Temperature Controller Circuit using DC Fan
This article show how to make Arduino Temperature Controller Circuit using DC Fan Arduino UNO, LCD, transistor, DHT11 sensor and with few resistors. It show temperature and fan speed on LCD and control fan speed based on room temperature in home or office. Fan turns ON and OFF automatic when temperature goes above or below […]
How to Measure Humidity and Temperature using Arduino and DHT11
This project show How to Measure Humidity and Temperature using Arduino and DHT11 DHT11 give temperature in Celsius and humidity in percent. Arduino read sensor and show on LCD. This circuit is good for checking room, garden or weather. It is also good for learning how sensor and Arduino work together. Coding: Code Explanation: Circuit […]