In today's post is a tiny Programmable Waveform Generator module based on the Analog Devices AD9833<br /><br />This is what I bought:<br />AD9833 Programmable Microprocessors Sine Square Wave DDS Signal Generator Module <a href="http://www.ebay.co.uk/itm/-/381214316569" target="_blank" rel="nofollow">http://www.ebay.co.uk/itm/-/381214316569</a><br /><br />Here's the AD9833 datasheet:<br /><a href="http://www.analog.com/media/en/technical-documentation/data-sheets/AD9833.pdf" target="_blank" rel="nofollow">http://www.analog.com/media/en/technical-documentation/data-sheets/AD9833.pdf</a><br />...<br /><a href="https://www.youtube.com/watch?v=y-q_ibWneSo" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=y-q_ibWneSo</a>