/challenges-projects/project14/spring-clean/b/spring-clean-projects-2026/posts/building-a-secure-decentralized-smart-home-from-scratch-part-2In Part 1, we built and tested a functional physical prototype. The ESP-NOW mesh network, secured by cryptographic hashing and wired to mechanical relays. But while the prototype functioned, it was still just a bulky bench setup wired on a breadboarden-USTelligent Community 12