Hardware:

boards, kits, patents, and research into simple procedural and conditional sequences and building blocks that lead to complex emergent structures and behaviors that scale well

Papers & Presentations:

the time vs space tradeoff in hardware/software systems; 3D circuits; rapid wavefront and defect-tolerant configuration methods for fine-grained configurable hardware

Free Resources:

Development environments and online resources allow users to develop their own algorithms and circuits; hardware and simulators for educational and noncommercial uses