Society of Robots - Robot Forum

Electronics => Electronics => Topic started by: flames on May 23, 2010, 09:56:38 AM

Title: electronic compass
Post by: flames on May 23, 2010, 09:56:38 AM

hi

im doing an autonomous robot project now
i need a compass to direct my robot.
is there any electrical compass that give us analog output (in terms of how many degrees south or something like that) ?
so i can direct my robot precisely.

thanks

Title: Re: electronic compass
Post by: Razor Concepts on May 24, 2010, 04:16:41 AM

Nope-modern compasses today are all digital. Hmc6352 is common and uses i2c

Title: Re: electronic compass
Post by: iaaly on May 24, 2010, 03:13:30 PM

CPMS03 is also digital, and it's very easy to use, It can be controlled through I2C or PWM

Title: Re: electronic compass
Post by: Soeren on May 24, 2010, 04:34:13 PM

Hi,

Quote from: flames on May 23, 2010, 09:56:38 AM

is there any electrical compass that give us analog output (in terms of how many degrees south or something like that) ?

Usually, the analog types are (like this one (http://www.imagesco.com/articles/1525/01.html)) of the sine/cosine output type.

Title: Re: electronic compass
Post by: flames on May 25, 2010, 09:34:42 PM

but for digital how can we determine the exact direction (like the degree)?

from what i know the digital compass will only give value 1 or 0 whenever it face either S, N, W, or E.

Title: Re: electronic compass
Post by: Razor Concepts on May 26, 2010, 03:51:03 AM

I mean digital communication-for example, the hmc6352 uses the I2C protocol to communicate with a host microcontroller