有一天，我在浏览CSDN时看到一篇关于 AD9850 的帖子。AD9850是一款可以产生1hz到40mhz左右正弦波的芯片。淘宝的产品经销商能够将芯片与提供 TTL 电平控制的小板配对，然后以令人难以置信的 60元（或更低！）的价格出售。 要控制 AD9850，您需要某种微控制器。

[m0xpd] got his hands on an inexpensive AD9850 DDS Module from eBay but needed a way to control it. He took inspiration from the projects that used a PIC microcontroller, but decided to add his own ...

A while back, [m0xpd] picked up an unbearably cheap AD9850 DDS module from ebay. He turned this in to a Raspberry Pi-powered radio beacon, but like so many builds that grace our pages, the trolls didn ...