According to the Three R’s slogan “Reuse, Reduce, Recycle”, we must get aware to save our planet from e-waste. Sometimes we have dead mobile phone but its battery is in good working condition. The circuit given here is used to utilise the battery for mini candle light using High bright LEDs. The main part of the circuit is IC MC34063A. It is a monolithic controller which consists of an internal temperature compensated voltage reference, a comparator, controlled duty cycle oscillator with an active current limit circuit, driver and high current output switch. This IC was specifically designed to be incorporated in step−down and step−up and voltage inverting applications with a minimum number of external components.
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PARKED VEHICLE MONITOR
Vehicle is part of our busy life but if we are in office or in house then we need to park vehicle outside or in parking lot. There is prone to theft or hit by other vehicle. The situation of vehicle can’t be track without visiting parking place. So this project is built to track status of vehicle, when somebody try to steal the vehicle or get hit by any others vehicle.
The project built on two boards one is for transmission which named as PARKING VEHICLE MONITOR-TX and other is for receiving which named as PARKING VEHICLE MONITOR-RX. The TX board is used to transmit the status of vehicle and other RX board is used to receive the status of vehicle and display the status on 16×2 LCD display.
