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IR Based Security Alarm Circuit IR Based Security Alarm

IR based security alarm circuit can detect any movement and trigger the alarm. This circuit is very useful in homes, banks…

2 Digit Object/Product Counter Circuit 2 Digit Object/Product Counter

Object counters or product counters are important applications used in industries, shopping malls, etc. They count objects…

LM386 Audio Amplifier Circuit LM386 Based Audio Amplifier Circuit

Simple Mic audio amplifier can amplify sound that is given from Microphone. This circuit can be used as “Small mic and…

DTMF Based Home Automation System DTMF Based Home Automation

We use many different types of communication in control applications to control home appliances, industrial appliances, and…

Cell Phone Charger Circuit Cell Phone Charger Circuit

Mobile phones generally charge with 5v regulated DC supply, so basically we are going to build a 5v regulated DC supply…

Automatic Room Lights using PIR Sensor and Relay Automatic Staircase Lights using PIR Sensor and Relay

This automatic staircase light circuit switch on the staircase lights automatically when someone enters on the stairs and gets…

4x4 Matrix Keypad Interfacing with 8051 Microcontroller 4x4 Matrix Keypad Interfacing with 8051 Microcontroller

Keypad interfacing with 8051 microcontroller represents one of the fundamental skills for embedded systems developers. Matrix…

Distance Measurement using Arduino & Ultrasonic Sensor Distance Measurement using Ultrasonic Sensor and Arduino

Ultrasonic sensors are great tools to measure distance and detect objects without any actual contact with the physical…

LED Interfacing with 8051 Microcontroller (AT89S52) LED Interfacing with 8051 Microcontroller

LED interfacing is the first thing one would try to do while getting started with any microcontroller. So here in this…

Fire Alarm Project Fire Alarm using Thermistor

Fire alarms are prime necessities in modern buildings and architectures, especially in banks, data centers and gas stations.…