led

NodeMCU and a tricolour led

I’m on a project that requires some feedback after the operation is made. I cannot use an LCD because they are only two pins left and almost no memory. So my mind focused on two LEDs but after a while, I made a choice, I will use tricolour¬†LED.
From what I read there are two types, one with a common anode and one with common cathode. We will go with common anode.

Module added to boilerplate

(more…)