Well I am tring to make a circuit to charging lipo battery then use lipo. while arduino nano using lipo battery, nano measuring the voltage level of lipo. I am planning to make deep sleep if voltage level decrease to under 3.5 volt.
everthing working fine 5v boost converter gives 5v output until If I plug in the battery + pin to NANO A0 pin. after plugin A0 pin, 5 boost converter decrease to ouput voltage near to 3 volt.
How to measeure correct voltage level of lipo battery while I am powering the arduino nano with lipo?
this is my circuit