The AT-command modules from Synapse seem potentially useful. They automatically create self-healing star networks with long range (amplified versions have three mile range). They cost about $25/1. The coordinator, which plugs into the PC and automatically creates the network, costs $180. At first glance is seems that the end devices, which have ADC and other io, don’t even need a micro, but can be used like radio-controlled addressible io, but sadly, no. Otherwise this would be a fun solution for some simple desktop extension ideas.