Connecting 30-year old computers to the internet in 2021… for the LOLs. Revisiting RS232, null-modems and the like, all at 19200 baud.
Controlling my 1990s Technics tape deck from a 1990s PDA – Psion Series 3a remote control via NodeMCU
Retro computing. Getting 1990s era computers connected to modern stuff….