Making Collapseos run on an iot esp8266 intelligent lightbulb chip.
I started this as a middle way between the rather dry running of CollapseOS on an emulator under Linux and the super-ambitious way of building your own microcontroller system of vintage chips or home made radio tubes.
Here you could get collapse running on some bare metal of its own, ready-made kits are sold on various shops if one does not want to solder.
In this project, i combined three things: the Arduino environment, the CollapseOS collapseos-rc2014 (from Virgil Dupras), and the Z80 Emulator, z80emu, (from "anotherlin" i.e. Lin Ke-Fong.)
There is a compiler script that does "everything", checks out parts from CollapseOS and z80emu, does some transformer rebuild magic and produces the emuz80ardu/ directory where it puts files suitable for the rather limited Arduino build environment.