When we plug in Precision Electronic Rat Repellent Circuit device, it makes high loud noise that rat and mouse do not like. Also, humans and most animals cannot hear this noise because of its very high frequency, hence, this device is a good choice if we do not want to use poison, as it produces […]
555 Timer Projects
Digital Volume Controller Circuit
This Digital Volume Controller Circuit talks about special type of electronic volume control, which does not uses normal knob but it uses an electronic parts. Also, normal volume knob uses resistor but this one uses small computer chip to control sound level; as it gives more function and also with more correctly. Circuit Working: Parts […]
Dual Battery Charging Circuit
Did anybody’s device ever had no battery but have other batteries with just wrong size? then this post will show how to make a Dual Battery Charging Circuit. Also, it uses one power to charge two batteries and it uses one small chip called IC 555 and other small things to ensure both battery get […]
Seven Segment Counter Circuit
Seven Segment Counter Circuit is one simple circuit.; which count numbers and show on seven segment display. Also, when we press button, number goes up by one and the circuit is very easy to make and good for learning how counting works in electronics. What is a Seven Segment Counter Circuit: Seven segment counter circuit […]
Infrared (IR) Sensor Alarm Circuit using TSOP1738
This tutorial show how to make a Infrared (IR) Sensor Alarm Circuit using TSOP1738, which finds intruder using light which we cannot see. Also, this alarm circuit uses infrared light so people call it IR alarm, which make one invisible light beam with small chip named IC 555. Moreover, if someone walk in front of […]
Infrared (IR) Intruder Alarm Circuit
This article tell how to make new type of Infrared (IR) Intruder Alarm Circuit, where it can find person who walk through invisible light beam. Circuit have two main part: one transmitter and other one is receiver. Transmitter send out one infrared light beam across a room and if someone goes in front of light […]