In this post, I will show how to construct a laser security circuit which can send SMS alert to owner of the property or anyone else and activate loud alarm […]
Search Results for: transistor circuits
10 LED Tachometer Circuit
In this post I have explained how an accurate 10 LED tachometer circuit can be built using ordinary parts like IC 555 and IC LM3915. The idea was requested by […]
Arduino based Battery Over Discharge Protection Circuit
In this post, I will show how to construct a over discharge protection circuit for 12v battery using Arduino which can protect 12V SLA battery against over discharge, and […]
Timer Controlled Submersible Pumpset Circuit
In this post I have explained a timer circuit for submersible borewell pumpset which alternately switches the pumpset ON/OFF at a predetermined rate in order to allow the ground water […]
Illuminated Crosswalk Safety Light Circuit
In this article I have explained a simple illuminated crosswalk safety light circuit for ensuring a safe walking passage for the user amidst heavy traffic. The idea was requested by […]
RFID Security Lock Circuit – Full Program Code and Testing Details
In this article we will see how an Arduino based RFID reader circuit could be used for controlling a relay, which in turn could be used in security door lock […]
