This Simple Light Activated Alarm Circuit is like very sharp nightlight, it have small part called LDR which work like a tiny eye. Furthermore, when light goes away fast like someone is moving near circuit it make sound or light happen to warn us. Moreover, it also uses other parts like transistors, resistors, capacitors to […]
Security and Protection
Simple High Temperature Alarm Circuit using IC 555
Simple High Temperature Alarm Circuit using IC 555 uses one special chip called IC 555 which works like a temperature guard; also it keep checking temperature always. Hence, if its too much hot it make alarm sound like buzzer and tell us something is getting too hot, so we can know early and fix before […]
Pressure Sensor Alarm Circuit
To begin with, this Pressure Sensor Alarm Circuit talks about one electronic device which can feel when pressure goes up or down. Think of a one special plate like doormat, pressure increases when someone steps on it; or if there is a change in air pressure inside the machine then this device is capable of […]
Simple Vibration Sensor Circuit
A Simple Vibration Sensor Circuit works like a small motion detector for electronics, it senses shaking or sudden movement and then sends an electrical signal. Furthermore, this type of circuit is good for use in thief alarm to feel someone come in or for earthquake to feel ground move; also, we can use it in […]
Electronic Gatekeeper Circuit
This small and Electronic Gatekeeper Circuit work like little guard for our door, it uses sensor to check if someone comes or goes from gate. Sensor can be like light beam or something we can step on and if person goes through without permission then circuit make alarm or send message to tell us. So […]
Heat Sensor Circuit using Piezo Transducer
This Heat Sensor Circuit using Piezo Transducer is like small detective for heat, which uses special thing called piezo transducer and work like tiny electricity maker. When it get hot or cold it presses itself little bit and make small electric shock and the circuit look at this shock to know how much hot or […]