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DescriptionThis project is PIC16F84 or PIC16F628 controlled navigation board based on Robson Company's 1490 digital compass. The board is built with and without microcontroller support. Four LEDs are used for visual indication.Additionally the microcontroller converts the digital compass output to a serial output. So the board can be used in various application. In robotics, PC applications, etc. The circuit operation is easy. A 5V voltage regulator based on an LM7805 is used to regulate the 9V battery voltage. Then this 5V output supplies PIC, digital compass and the LEDs. If you don't use the microcontroller, then the compass outputs directly drives the LEDs. If you use the microcontroller then the outputs are first read by the microcontroller and the LEDs are driven through the PIC. The 4 bit output of the compass gives the direction information in 8 positions; Nort, North-East, East, South-East, South, South-West, West, North-West. A couple of techniques for reducing the power consumption and the PIC software code are also given in the project page. Read More:imagesco.com/articles/1490/04.html
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