In my application I need to measure the power consumption of the Raspberry Pi 2 model B board under different conditions: taking pictures, compressing images, encrypting data etc.
As I don't have precision multi-meters with data logging, I thought of using an ADS1115 16bit ADC, hooking up a 0.1ohm shunt on the +5V power line and measuring the voltage drop related to the Pi voltage. The ADC would be connected externally to another device for storage (possibly another Rpi or an Arduino board).
Is that setup feasible? What are the implications?