There are many charge controllers available, but ordinary cheap ones are not efficient enough to use with maximum power from solar panels.
Project tutorial by Abhi Verma
First of all very sorry for replying so late. i didn't checked my account for a long time.
1. startup is declared and initialized in starting of code. it was intended to run soft start only once after power reset.
2.ACS712 comes in 3 different variants 5A ,20A and 30A. user need to change the factor as per their module. i can't do this in code as it also requires to measure the current and change the factor to get the more accurate readings.
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