A handheld NES emulator on my own 4-layer ESP32-S3 PCB, hand-assembled and debugged with a multimeter. Sound, saves and a 3D-printed case.
Decktility is a handheld PC, inspired by Yarh. io Micro 2, uConsole and various retro handheld PCs.
Custom Buildroot OS, mainline kernel, own boot core. Local-first agentic with a verifiable record the operator holds, all source viewable.
