I’ve got a matrix sensor (FSR) with 44 rows and 44 columns. I want to use the Arduino Mega 2560 (16 analog inputs) and 6 4051 multiplexers (8*6 = 48 > 44) for the rows.
4051 multiplexer is the one recommended from the arduino team (Arduino Playground - 4051). But I need to measure 0V-5V signals and the arduino mega has an input voltage from 7V to 20V. Why would they recommend a multiplexer that wouldn’t work?
Or what is it that I don’t get?
Thank you so much in advance.