increase analog read resolution arduino? Answered
Is there a simple, hardware based way to use two analogRead pins on an arduino together for higher resolution? I have a project that only needs two analog values, but the more accurate the value the better.
I do NOT want an external ADC, I am aware they exist, but I don't have time to get it shipped.
It doesn't need to be fast, or multiply the pins (just a value of 0-2047 would be fine, but 12 or 20 bit equivalent would be better). Preferably something with just resistors and diodes, if that exists, but more components is okay too. I was thinking something like a resistor-divider or something, but I can't figure out a simple way for that to work.
Again, I do NOT want a new ADC, I know how they works and that I can buy one, but I prefer just using the built-in one because there's no interface issue. No matter how simple it "really is" I ALWAYS have a problem getting two components to communicate.
I'm using an UNO