Nice. :) This just sounds like a fun project to do.
Remarkably easy things to put together, an ESP32 or similar module, a TTL-RS232
converter for the voltage levels, a spot of programming, I use Zi-Modem... nothing fancy but it works nicely. Only thing I find, is that they need a bit of time to fire up and get running, sometimes has me wondering whats its doing.
Think I've got makings for two still.
When are you coming to Melbourne next? I'll have to pop together a showbag for you.
Spectre
Something prophetic ought to go here <=-
---
* Origin: -=< Posted from The Lower Planes >=- (21:3/105)