Sometime It is very convinience that one toilet is occupied or not. There is a human detect sensor like EKMC1601111. We create html that showing lavatory signal (like in airplane ) by collaborating with this sensor.
Controlling obniz io from web. Not just on/off. Drive methods and pull-up down can be configured.
Circuit for Starter “obniz Board” is available on Amazon and other online stores.
You can get it at below