This project is for smart LDR Light Sensor Circuit with Arduino. It can feel light like human eye. When dark come, it turn ON lamp by itself. When light come, it turn OFF lamp automatic. No need to press any switch. It save time and save power. It is small, simple and very low cost […]
Sensors and Detectors
Arduino Based Coin Value Identifier Circuit
This Arduino Based Coin Value Identifier Circuit is a simple coin sorting machine. It can detect and sort 2 Rs, 5 Rs, and 10 Rs coins. Each coin type is sensed by different IR sensors. The Arduino reads which sensor is triggered and shows value on LCD. This project is useful for small vending machines […]
Arduino GPS Based Speedometer Circuit
Anyone want to check speed of bike, car or any moving vehicle? With Arduino and GPS module we can make small but cheap DIY speedometer. This project for Arduino GPS Based Speedometer Circuit is easy and fun. It shows real-time speed on LCD using GPS satellite data. No need of big or complex sensors only […]
Arduino Based Motion Dog Barking Alarm Circuit
This Arduino Based Motion Dog Barking Alarm Circuit make dog sound when motion detects. it uses Arduino Nano, Pir sensor, Dog Sound Module, BC547 transistor, IC LM386 Amplifier Module and 8Ω Speaker. Pir senses human or animal move. Arduino play dog bark sound to scare intruder. This is simple and low cost security system. Circuit […]
Arduino Based Entry Exit Monitoring Circuit
This Arduino Entry Exit Monitoring Circuit counts people while entering and leaving place. It uses Arduino UNO R4 WiFi board. Two IR sensors detect people. Two servo motors control entry and exit gates. Sends crowd count to Arduino IoT Cloud. Helps know how many people are inside anytime. Circuit Coding: Code Explanation: Circuit Working: Parts […]
Water Quality Test Circuit using Arduino and Turbidity Sensor
Water looks clean but can hide dirt we cannot see. Tiny dust, clay and silt make water cloudy. This cloudy thing is called turbidity. More turbidity means more dirt and bad water. Less turbidity means clean and safe water. This project uses Arduino and turbidity sensor to check water. It shows result on LCD and […]