Projects based on everyone's favorite low cost Linux Machine - The Raspberry Pi
Drones, Weather Balloons, Planes, Helicopters, Multicopters, and more. If it flies, it goes in here.
FPGAs, CPLDs, PALs, and GALs. VHDL, Verilog, or Schematic. This is the place to check out Programmable Logic!
High flying orbital projects, and the ground stations to communicate with them