Posts by Syed Saad Hasan

A Panic alarm is a simple electronic circuit that allows a person under stress to quickly & safely call for help in case of an emergency. Pa…

An audio power amplifier is an electronic amplifier that amplifies low-power audio signals such as the signal from a radio receiver or an el…

A Tone generator circuit usually uses the 555 timer IC to produce a range of sounds. Generally, Tone Generator circuits include triangle, sq…

People have used microphones for more than a century. They remain one of the most integral parts of electronic production and recording. Ove…

Simple Siren circuits are an important part of electronic security devices nowadays. In this project, we will focus on a simple & low-cost t…

Hi in this tutorial I am going to show you how to make a dimmer circuit using PWM (Pulse Width Modulation) technique. Dimming of LED is achi…

A dark detector circuit is used to detect the darkness OR absence of light in any area. It can be used in applications where we can automati…

First of all, thanks for landing this post, if you are searching for "Home Automation Using NodeMCU | IoT projects | firebase | NodeMCU ESP8…

Would you like to learn how to interface a seven-segment display with an Arduino?. In this tutorial, we are going to interface a 7 segment d…

This simple Touch Switch Circuit by using a 555 timer IC operated as a MONOSTABLE vibrator. Here the stable stage is LOW, so the timer outpu…

Mosquitos are annoying especially while sleeping so most people use chemicals because the chemicals are high efficiency. But using often che…

The Arduino SD card module is especially useful for projects & tutorials that require data logging. The Arduino can create a file in an SD c…

Infrared Proximity Sensors can be used for different types of applications like obstacle sensing, color detection, fire detection, line sens…