Homebrew

摘要

This month's project is based on a collection of circuits we have built over the last few months. The AD9851 DDS board (October 2009) will be combined with the 40 pin PIC development board (November 2009) to make a direct digital synthesiser (DDS) local oscillator (LO) for the LF/MF receiver project. As most of the hardware has already been described in some detail, this month we will be taking a close look at the PIC software that drives the DDS unit.