water level indicator

[Chandu Nagabrahmam]

hi guys..
Im doing project on water level indicator, I have designed water level sensor using transistor BC547.(circuit is attached)
The LED glows when probes touches the water. the output of the sensor is given to microcontroller.
I need some 5v to drive the port pins. but sensor output is below 3 volts. what can i do to get 5v and if I can amplify it, please provide the amplifier circuit.

 

[chuckey]

I have a problem , in that your words do not match the circuit. There is no LED in the circuit. To make sure that the transistors turn on connect a high value resistor between their bases and the +Vcc - 1 meg X 4?
Frank

 

[Chandu Nagabrahmam]

sorry about the circuit, here is the one I have attached

 

[kam1787]

why do you need a LED in the probe? You are losing 1v6 by including it. AC on the probe is generally preferred.