Let's Make Robots!

cheap digital compass, does anyone have experience with it?

Hi LMR people,

Looking for a digital compass for my robot, I found this interesting Dual-axis Magnetic Sensor Module with UART& I 2 c Interface for $16.

link: http://www.sureelectronics.net/goods.php?id=958 and http://www.sure-electronics.net/download/DC-SS504_Ver1.0_EN.pdf

does anyone have experience with it? I noticed there is also a cheaper version without the usart function for 5 dollar. http://www.sureelectronics.net/goods.php?id=944 sounds really cheap, but does it work good? anyone already used one of these?

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I wish they had a tilt compensated one. I have only found one under $100.

The compasses I use are I2C and I see that as a plus; too many things are serial and you run out since each serial device needs a serial port. I2C devices share.

Have never used one myself but the prices look good. Thanks for the link.

Unless your micro doesn`t have an I2C interface I would take the one that is essentially the same but 1/3 the price. The more expensive one simply has an embedded PIC providing a serial port. The sensor chips are exactly the same.