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 […]
Hobby Circuits
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 […]
DIY Paper Recycling: Turn Old Paper into New
Do you throw old notebook, newspaper or bills in dustbin? then Wait! What if old waste paper become new fresh sheet in our hand? Yes, it is possible and its quite very easy! So this small DIY Paper Recycling Turn Old Paper into New teaches us how to recycle paper at home, as this project […]
Solar Powered Mobile Charger Circuit
Now days mobile phones are very important part of our life, but charging it always need electricity. If we are outside or village side where there is no power then problem comes; so this small Solar Powered Mobile Charger Circuit can give 4.7V output from 9V solar panel. Also, it is simple and with low […]
Touchless Dustbin Circuit using Arduino Uno and Ultrasonic Sensor
This Touchless Dustbin Circuit using an Arduino Uno and Ultrasonic Sensor is a simple and useful mini project; people also call it a smart dustbin or an automatic dustbin because it opens and closes automatically without touch. In normal dustbin we have to touch lid by hand which is not hygienic, but in smart dustbin […]
Luggage Safety Alarm Circuit using IC LM358
Today security is big problem everywhere; many time thief try to open bag or suitcase in bus, train or station, therefore, we cannot always keep our eye on our luggage. So this small Luggage Safety Alarm Circuit using IC LM358 is a solution which help to protect our bag, as it uses piezo sensor and […]