takbbb
Junior Member level 2
i connect 1M resistor from main 110v ac to MCU
however, the zero cross is uneven
and i found that the waveform to mcu is a bit strange ..
as below
the point is not really drop to zero, and the scale have changed??(why??)
and this the resultant waveform fm my mcu
the falling edge or rising edge interrupt wase @ abt 2.5V
pls help and suggest thx~
however, the zero cross is uneven
and i found that the waveform to mcu is a bit strange ..
as below
the point is not really drop to zero, and the scale have changed??(why??)
and this the resultant waveform fm my mcu
the falling edge or rising edge interrupt wase @ abt 2.5V
pls help and suggest thx~