A similar question, but if the OP objects, we can move this to a new thread.
I have a need to take a current shunt signal (-10mv(charging) -> +100mv(discharging)) and read it with a Nano, or other 10-12 bit 0-5V ADC. What's the simplest way to do this? It will be an adaptation (kludge) of an existing single-ended 0-5V input my friend has already committed to PCB, so I'm looking to basically shift and reduce the signal range. No negative supply or other complexity allowed, basically I'd like to piggyback a simple daughter board and have four connections - in, out, and of course 5V and GND. I2C, SPI, and other digital-domain addons have been excluded from consideration. Ideas, suggestions? My analog is rusty, but hints will do, as I can protoboard it until we get it right.
...working through the above-linked TI document shortly, so this may be a wasted post.