I'm using a blue pill board for some stuff, its main sensor is GY-61 analog accelerometer. I mostly need resolution in the center, can I power GY-61 from 5V and put a red LED between the analog output of GY-61 and ADC of blue pill to drop the voltage to acceptable levels? I realize I won't have the first few hundreds of values, but I don't care all that much bout them. Is LED voltage drop linear?
I understand LED will convert some current into light, but in my understanding, ADC input is almost infinite impedance, right?