Other
“We are living in the world where everything goes to be automatic from your washing machine to your ceiling fan. Street lights are one of those example of automatic world. Automatic street light are those light which needs no manual …
In this article we will build a circuit to control the position of a servo. Servos are typically small in size and are typically used to operate remotely controlled robots, cars or airplanes via radio. They are also used in …
Today we will build a circuit activated by clapping sounds. This allows you to open or close a circuit by clapping your hands. This circuit is made using a sound sensor, which detects the loud sound (of clapping) as input …
Today we will build a circuit that is a timer. The IC 555 was used. This was set to Mono-stable mode. When the button is pressed the time starts and the LED lights up. After a while it goes off …
Today we will build a circuit that detects the interruption of an infrared beam allowing an alarm to be created. The LM358 IC has two comparators. Pin 3 which is the non-inverted end of the voltage comparator is connected to …
Today we will build a circuit that uses the IC 555 along with buttons and resistances to play the 9 musical notes. This circuit has a wave generator 555 configured as an astable multivibrator circuit. This type of operation is …
“Time displayed on large 1” (26mm) 7 segment displays with secondary 4x20 LCD information display. The clock can be used stand alone or provides the following pulses to drive slave clocks 1 sec alternating, 30 sec, 1 min , 1 hour …
The circuit presented is a very popular circuit based on two IC 555’s. It produces a set of audible sounds that can be changed using the two potentiometers. The original circuit was published by Forrest Mims in a book …
Today will be presented a circuit to test bipolar PNP and NPN transistors . It is a circuit based on the 555. This circuit lets you check the type of transistor we have and if it is working properly or not …
This circuit serves as the basis for a huge set of circuits ranging from led chasers, Knight Rider, Electronic Roulette, Semaphores, etc. Let’s present here two of this kind of circuits. The 555 IC is well known for being …