A few years down the road, the radio switch transmitter breaks down and is no longer manufactured. The receivers, wires and the mechanical switches blocked in

A few years down the road, the radio switch transmitter breaks down and is no longer manufactured. The receivers, wires and the mechanical switches blocked in the ON position are hidden somewhere under multiple layers of drywall. But the functionality of the switch can be emulated with with a software defined radio attached to a 1GHz Raspberry Pi running Linux. It works great, but an out of date kernel enables a virus that spreads from light-switch to light switch and performs a light show on the evening of 4th of July in any calendar year.