7 segment fuel guage

Ok ill clear this up, ITS NOT FOR A CAR!



It uses car parts (plastic tank and fuel sender unit) but there is no fuel in it, it is water/detergent.



I want to use a PIC to measure the ohms coming from the sender unit and display it on a 7 segment display.

I know I could just get a multimeter but the table is in a dark area and LCD wont be visible.



This will give me a rough idea how much liquid is still in the tank.



Anyone seen a similar thing/project?

Really its just a Pic based ohm meter that uses 7 segments to display the ohms.

Thanks.

Given a choice, with a resistive fuel level sending unit I would think about using a LM3914 to drive a LED bar graph display.

Ron

hi,
Have you considered using a LM3914, this would give 10 indication levels, using regular LED's.

What is the min/max values of the resistive level sensor in the tank, [is it linear?] also what power supply do you have eg: 12Vdc...


"Drat Rons' already finished his second cup of coffee!"

ericgibbs said:

hi,
Have you considered using a LM3914, this would give 10 indication levels, using regular LED's.

What is the min/max values of the resistive level sensor in the tank, [is it linear?] also what power supply do you have eg: 12Vdc...


"Drat Rons' already finished his second cup of coffee!"

Click to expand...

You have to get up pretty early US EDT to beat Eric.

Ron