wejos
Member
hi guys,
just want to ask for small input about - because i read the GND (pin 5 of DB9) could go 12+ sometimes, so since in my circuit they all have common ground, should i put a diode (say IN4004) to stop the wrong polarity and or from short circuiting the circuit? OR best to leave out the GND?
which one among the two you think?
thanks a lot in advance,
joey
just want to ask for small input about - because i read the GND (pin 5 of DB9) could go 12+ sometimes, so since in my circuit they all have common ground, should i put a diode (say IN4004) to stop the wrong polarity and or from short circuiting the circuit? OR best to leave out the GND?
which one among the two you think?
thanks a lot in advance,
joey