Thanks Ron and Eric.
Ron, I believe thats the shunt resistor right? The INA219 module by Ardafruit already has a shunt resistor of 0.1Ω present.
Also, I have been thinking at dropping the voltage measurement using this module and use an analog sensor to perform voltage measurement. However, since the voltage might come to as low as 1 mV, do you suggest I stick in a INA128 (quiescent current 700μA) with sufficient gain to extract this voltage. If so, is there a straight forward way to compensate for this current thats been reduced from the taken current reading?
With the present settings, the current resolution is 0.1mA(100μA) so 700μA would be quite a large deviation.
Thanks for taking to time to reply.