water level dectection..

[yukito]

can anybody could help me in design a water level..?

the possible components that i would be using are, transistor, diodes, led, resistor, capacitor... i'm not allowed to used ic....

in a container their are 5 measurements, empty, 1/4, 1/2, 3/4, and full.. in each measurements the led must turn on, but if it is empty the led in other measurements must be off, and it is in 1/4, the led in empty must be off and so on....

 

[KMoffett]

Does the transistor have to be a BJT (bipolar junction transistor...a "standard" transistor) or can it be a MOSFET (metal oxide semiconductor field effect transistor)?

ken

 

[yukito]

BJT(bipolar junction transistor...)...

 

[KMoffett]

If you don't have enough basic electronics knowledge to figure out how these components could be combined to implement a water level [dectection] circuit, you could start by Googling: water level detection circuit

You will find things like this: **broken link removed**

Ken

 

[yukito]

i do have a basic knowledge in components but in combining those, i don't i have enough knowledge in those thing..

 

[KMoffett]

Did you Google?: water level detection circuit
Did the link give you any ideas on how it might be accomplished?

Ken

 

[yukito]

i already reach in google and in this site. i had some ideas... i'm still try do accomplish my circuit... i hope that it will work..

 

[KMoffett]

Good! Ask questions if you run into problems.

Ken

 

[yukito]

help

can any body help me in me water level project. i already had a ckt but the problem is, the led won't alter if it is going to indicate its level...

 

[KMoffett]

You might want to include the circuit and sensor arrangement you're using.

Ken

 

[yukito]

my circuit

this is my circuit i may.... i need, is to turn on one led according to its level... but the result of it is all the led are turning on... hope you could help me...

 

[blueroomelectronics]

You forgot to attach the circuit diagram.

 

[PedroDaGr8]

Ummm, why not use a float connected to a lever + arm. use the arm to bridge contacts, with contacts stretching from E to 1/4, 1/4 to 1/2, 1/2 to 3/4 and 3/4 to full.

 

[yukito]

my circuit

hope you could help me..
thanks a lot....