Favorite topics:
- Music synthesis, effects and instrument design
- Radio communication (especially software-defined radio)
- Sensors of any variety
- Field-programmable gate arrays (FPGAs), Verilog and VHDL
- Compilers and language design (I wish I knew more about functional programming!)
- Python misuse and abuse (Pyrex and Cython, too)
- Signal processing and compression of audio and video
- The joys and pains of running a small business
- Circuit board design and manufacturing
If you're interested in that stuff, I'm happy to offer my opinion. It's worth as much as you paid for it! (A beer, if I'm lucky.)
At the moment, I consult on open-source software and hardware projects, and sell peculiar analog clock kits over at ShareBrained Technology.