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. When Pir senses human or animal move, then Arduino play dog bark sound to scare intruder, also this is simple and low cost […]
Sensors and Detectors
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 and two servo motors control entry and exit gates and then sends crowd count to Arduino IoT Cloud. Hence, this help us know how many people are inside anytime. Arduino […]
Water Quality Test Circuit using Arduino and Turbidity Sensor
Water may look clean, but it can contain hidden dirt that we cannot see; also tiny particles such as dust, clay, and silt make the water cloudy and we call this cloudiness turbidity. More turbidity means more dirt and bad water and less turbidity means clean and safe water; therefore, this project uses Arduino and […]
Arduino with Non Contact Liquid Sensor Circuit
An Arduino with a Non-Contact Liquid Sensor Circuit detects water or other liquids without touching them; therefore, it functions as a contactless sensor. Also, it works on capacitance change near container wall and sensor sense water inside plastic or glass without direct contact. Moreover, it is safe, easy and clean project one should give it […]
Sound Sensor Circuit using IC LM393
Sound follows us in every moment of our life and wherever we go sound travels with us; so sometimes we need a small electronic circuit that can sense sound and give output. A sound sensor is useful in many projects like clap switch, voice controlled light, sound activated alarm, toys and automation systems. This article […]
Sound Sensor Direction Circuit using Arduino
Sound is everywhere and sometimes we want to know from which side sound comes, example in robot or in security; so with Arduino and some sound sensor we can find sound direction. In this circuit we used four sound sensors and one OLED display with Arduino and OLED show which side sound comes; also this […]