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Author Topic: Libraries for controlling DDS RF Synthesizer Modules  (Read 325 times)
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After having used "DDS Modules" (based on the AD9850 device) under Arduino control in many of my amateur radio projects, I've now published some libraries to simplify their use...

There is a general library, https://github.com/m0xpd/DDS, which uses a soft SPI interface and a special library for the Arduino DUE, https://github.com/m0xpd/DueDDS, which uses hardware SPI.

A general description is here: http://m0xpd.blogspot.co.uk/2014/03/dds-and-duedds-libraries.html.
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Hello m0xpd,

first of all I would like to say thank you for your library and the description you've posted. Great work.
Easy to read, easy to follow and it also got me a watering mouth while reading it.

But now I have to bother with some questions that I would like to ask you as you seem to be "expert enough" to have all the answers. smiley
As I consider to create a musical instrument, a synthesizer, I ask myself if this, the chip as well as your library, would do the job.
I dont know that much about how to do anything of the things I have to do, but I am keen to get it done.
Right now my brother and I build a Arduino based 16 step sequenzer, and wihle researching for related stuff I found a website that sells a AD9850 breakout board which isnt that expensive.  http://www.ebay.de/itm/281274553982 Or is the a "better" one?


Questions I have are
- can I use this as I could use a "industrial produced musical instrument"? Wich means
- does the chip has the capabilities to generate envelopes to produce complex sound?
- how to edit the parameters if the chip is capable to do that? With potis attached to one of the pins and via shift register or such?
- would I need an amplifier on the outputs of the board to connect to a line mixer?
- does it really make sense to invest in a DUE if the questions above can be answered i a positve way?
- is the more coffee?

Thank you for your time.

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