thanks - yes i read that, my requirement is exactly the same, but unfortunately it didnt lead to a solution that i could see yet...

im planning to add a ic2 io controller (PCF8574) to a wemos d1 clone, and use the extra 8 or 16 inputs to send switch inputs into loxone via udp - its very easy in loxone to split up a byte into 8 separate digital inputs that represent separate input switches. my d1 has a number of free gpio pins to...