The astute among you may remember an earlier version of this Russian beauty, the Lapa, which I featured last year around this time. Creator [lemosbor] claims that the worry was less about visual ...
During this time, the battery voltage data obtained by the ADC will be inaccurate. When the voltage obtained by the ADC is greater than 4200mV, it can be determined that the USB port is connected.
This module is full analog of DSTIKE Deauther See this video below to get an idea how it's working.