monitor battary voltage using pic16f877

khatib

Member

• Feb 14, 2009

• #1

i want to design circuit that can monitor car battary voltage, then the out put of this circuit will treat with PIC 16F877 , if battary has low voltage the PIC will out audiable warning .

thanks .
khatib

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Feb 15, 2009

• #2

Use two resistors as an attenuator to feed the 12V to one of the PIC A2D inputs, I would suggest a ratio of 3:1 so you get an FSD of 5V on the PIC (assuming you're using the regulated 5V as a reference).

 

khatib

Member

• Feb 15, 2009

• #3

it is very good , can you write code using c or other language for that?

thanks alot

 

Nigel Goodwin

Super Moderator

Most Helpful Member

• Feb 15, 2009

• #4

Check my tutorials for assembler examples of using the ADC.

 

M

mister_e

New Member

• Feb 15, 2009

• #5

For C language, you may have a look at MikroC, Hi-tech, CCS demo version.

Install MPLAB and see what's already include in.

 

S

selvatrinity

New Member

• Feb 27, 2009

• #6

Thanks a lot

____________________

Osho blessings,

Selvakumar.v