Metal detector uses electric field to find metal near it. Making Metal Detector Circuit using Arduino is fun for electronics lovers. We can make it using Arduino, CS209A chip, LEDs, buzzer and some other parts. LED and buzzer will show when metal is close. This project use CS209A chip with Arduino. CS209A is good chip […]
Sensors and Detectors
Building a Smart Pet Feeder Circuit using Arduino
Feeding pets can be easy and on time using automatic system. This project for Building a Smart Pet Feeder Circuit using Arduino and other parts like IC 7809, SG90 servo motor and HC-SR04 sensor to make simple pet feeder. Feeder work with distance sensor to give food so pet can eat on time without people […]
Human Presence and Motion Sensor Circuit using Arduino
This project uses electronic and integrated technology for energy saving, smart places and safety system. Main idea is to sense human presence and movement. We use mix of sensors and microcontroller to do this work. In this tutorial for Human Presence and Motion Sensor Circuit using Arduino we have used STHS34PF80 sensor, IC 7809 and […]
Reverse Car Parking Sensor Circuit using IC LM358
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 […]
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 […]