T TKS New Member Jun 21, 2004 #1 Hi.. i'm using a optocoupler.. for making pulses... but because of the fact i use the output as the emitter to switch my pin on / off.. i know that the voltage rise and fall... is there a point where the micro doesn't know the state..??? i see it read a 1 realy fast 1,2volts..??? TKS
Hi.. i'm using a optocoupler.. for making pulses... but because of the fact i use the output as the emitter to switch my pin on / off.. i know that the voltage rise and fall... is there a point where the micro doesn't know the state..??? i see it read a 1 realy fast 1,2volts..??? TKS
Nigel Goodwin Super Moderator Most Helpful Member Jun 21, 2004 #2 TKS said: Hi.. i'm using a optocoupler.. for making pulses... but because of the fact i use the output as the emitter to switch my pin on / off.. i know that the voltage rise and fall... is there a point where the micro doesn't know the state..??? i see it read a 1 realy fast 1,2volts..??? TKS Click to expand... Some of the PIC input pins have schmitt trigger inputs, if you use one of those it should sort out any problems.
TKS said: Hi.. i'm using a optocoupler.. for making pulses... but because of the fact i use the output as the emitter to switch my pin on / off.. i know that the voltage rise and fall... is there a point where the micro doesn't know the state..??? i see it read a 1 realy fast 1,2volts..??? TKS Click to expand... Some of the PIC input pins have schmitt trigger inputs, if you use one of those it should sort out any problems.