Tell us about yourself!
I hope you used non-lead based solder. Lead has turned out to be a nasty poison that would leach into your mouth when you used it.
Where did you get the AD9833 module. I have seen several different ones and I don't want to buy the wrong one. And what is the upper frequency range that you can get?
I would have used the other half of your comparator as the inverter instead of adding another IC, but otherwise a great project.