I am using a sensor which delivers a 4 to 20 mA output. Converting this with a 250 Ohm resistor to ground I convert this to a 1 - 5 V output.
My question how can I change the 0V reference, so I can use the full spectrum I found a way to change the 5V reference (analogReference()). Is it possible to change the 0V reference of a input to 1V?
Any other solution to my problem is welcome as well! (As long as it doesn't involve I2C or anything which lowers my looptime drastically)