digital electronic compass for robot application

[zozobuja]

I'm trying to build a basic digital compass for a robot to be used for maintaining direction and detecting any obstacle to be avoided. It will only have 2 LED outputs. It should be made of a sensor and the digital outputs. But i don't know what sensor to use or even the schematic of the circuit. Can anybody help, please?????

 

[mayu_wakui]

try searching in the board..

 

[AhmedRaafat]

thanks for that site

 

[Rafael]

take a look at this ap note from microchip

AN996, Designing a Digital Compass Using the PIC18F2520

**broken link removed**