Limit to current measurement

[JuanZubi]

Using a 0,1 Ohm shunt resistor and with the same parameters of the excelent example here at GitHub, I found that couldn´t measure more than 800 mA, aprox, although the design was for 3,6 A.

Looking at the Shunt Voltage Register (01h) I found that it reached the 32 bits max at that current. So it can´t read any more current, although it is design for

Perhaps It is according to "Shunt voltage input range" parameter in page 5 of specificationes, that says 81,92 mV max.

The problem is solved reducing de Shunt resistor.

MY CONCLUSION: apart from calculations, take care of the value of Shunt resistor in order to avoid register 01h reach the limit.

Thank you very much for the files adapting the INA219 micropython software to INA 226. It is very useful for me. And I´ve learnt a lot