The system runs a bit like a normal event driven GUI. There is a event loop that polls the switch and the encoder. If the switch is pressed or the value of the encoder changes then an on_click or on_scroll event is called.
"Considering Africa is currently experiencing thebruntof anunprecedentedEI Nino-driven drought, where conventional livestock are dropping dead in the fields, the ability to regulate metabolic processes and maintain body condition that reptiles offer during times offaminecould be a gamechanger for livestock...