Automatic Water pump controller using BJT

This is one of my favorite analog electronics projects because this is the lowest cost but efficient automatic water pump controller. Components require for this project are 3 BJT model BC547, 1 Buzzer, 1 Relay, 8 Resistors, 1 Diode, 1 Led, Wires for sensing water level.  So all the components cost not more than $1. I …

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Android controlled Robot using AVR Microcontroller

The world is getting smarter day by day and people want to control devices like TV, Ac, even light, fan by their Smart phones. Just think, If we use individual remote for every devices it would be very inefficient .Now a days Android smart phone is a buzzword and many things can be controlled by …

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