This Simple Shadow Detector Security Circuit is like one guard with very sharp eyes, which uses one light sensor like photodiode to look shadow in one place. If something stop the light and make shadow, then the circuit think someone is there and start an alarm; alarm can be loud sound, blinking light or something […]
DIY Projects
Simple Storm Detector Circuit
Simple Storm Detector Circuit is like small weather magic in box, which can feel lightnings electric noise by showing the storm is coming near. Also, this circuit uses one antenna to catch small signal in air like small radio, but signal being weak it uses amplifier to make signal strong. Sometimes it also uses special […]
Ultrasonic Security Alarm Circuit
Ultrasonic Security Alarm Circuit work like invisible wall for ones home, as it uses very high sound wave like tiny squeaky noise which human ear can not hear it uses this to find the movement. Think like circuit sends sound wave then it waits to hear echo come back and if someone walk in the […]
Wireless RF Network Cable Tester Circuit
Wireless RF Network Cable Tester Circuit is like X-ray for internet wire, which can catch radio signal inside cable like ethernet, modem or satellite TV but there is no need to touch the wire. Also, it is very easy to use for checking cable working or not; for that just hold tester near the wire […]
Simple USB Reading Lamp Circuit
Simple USB Reading Lamp Circuit is like small power house for ones book reading; as it helps to make small lamp easy to carry and it take power from USB port like from computer, laptop or power bank also. Also, this small lamp give light when one wants to read book or need more light […]
Simple Time Delay Relay Circuit
Can anyone think small timer for their electric things? This Simple Time Delay Relay Circuit work like stopwatch for power; it waits for some time before turning ON or OFF something like light or motor. Also, this wait time can be same always like 5 second or can change using timer knob, main reason to […]