Some sensors give as output a voltage between 0 and 5V. The analog inputs of the NodeMCU require voltages between 0 and 3.3V. I plan to make a voltage divider with two resistors like in this link for compatibility.
To provide the desired voltage the quotient of the values of the resistances is fixed (approx. 1/2 for this case). However, the absolute values of the resistances are not.
Q: How to choose those absolute values? Which are the criteria and why?
I have a good background in electromagnetism but I know very few about electronic Engineering.
I think that low values must work, e.g. 1Ω and 2Ω (and surely greater values). But I am unsure of VERY high resistance values because I suspect that there should be some current intensity requirements.