Hello folks,
Since ESP sensors need power supply, i think that it can be interesting to have three things :
1) a reset switch (simple, it can be connected to arduino rst and/or esp reset i suppose)
2) a power led (simple, no comment)
3) a LINK STATUS led. This i suppose that can be very interesting, to know if that sensors is linked. To do this how we can interact with code (i've seen that esp sensors ping easyiot server to keep alive or something similar)... and how we can do it in nodemcu sensors without arduino? in some cases we can have a free gpio ... some ideas ?