There are quite a few of these modules on eBay for the AD9850 and AD9851 dds chip. In fact in some cases they are cheaper as a module then buying the chip in single quantities. (Sad but true.) I happen to own at least three or four of these and they are sitting in a box waiting for some time for me to bond with them.
About a year ago I was playing with the DDS60 and an Arduino Nano learning how to make them talk. I need to hook up one of my spare modules from eBay and get some new sketches (Arduino program) saved onto my network as a starting point.
I also have a nice si570 board form WA6UFQ that I want to work with. Too many projects & ideas competing for so little project time.
I need to tackle another chore on the home front this afternoon & then I hope to fire up an Arduino Uno and either the SI570 or AD9850.
73 de NG0R