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 […]
Automation Circuits
Line Following Robot Sensor Circuit
To begin with, this Line Following Robot Sensor Circuit work like robot eyes to follow line. Furthermore, it uses special sensor called IR or infrared to see black line and white ground. Also, these sensor are like small light but light is invisible. Then circuit look how much light come back then know where line […]
Simple Water Level Indicator Circuit using IC ULN2004
This Simple Water Level Indicator Circuit using IC ULN2004 work like small helpers for our water tank; as it uses one special chip named as ULN2004 to control many things together. This chip can work with big electricity but here it only control lights, the lights show how much water is inside the tank. So […]
Simple 220V Time Delay Switch Circuit with Triac
Think this circuit is like a smart switch for our home things which wait for some time before power comes. This Simple 220V Time Delay Switch Circuit with Triac work like power button but it does not gives power fast, but it waits for little time and then gives power to light, fan or motor. […]
Water Level Indicator Circuit with Digital Display
No need to check water with normal stick, because this Water Level Indicator Circuit with Digital Display use sensor to check water level. Then it show number from 0 to 9 on small screen, like mini calculator; so we can always see what level the water is in the tank. Hence, with this circuit, there […]
Simple Entrance Alarm Circuit
This Simple Entrance Alarm Circuit protects a door or entryway; it produces a loud sound when someone passes through an invisible IR light beam. Furthermore, it works good at day and night by not giving much wrong alarm; also the circuit is simple and good for hobby people during nighttime. Circuit Working: Parts List: Components […]