Actions
Forum Thread Details
  • State Not Answered
  • Replies 4 replies
  • Subscribers 401 subscribers
  • Views 320 views
  • Users 0 members are here
Related

I am starting a project with my arduino but need some help

jaytech101

how do I get negative input and how do I detect difference between the data as it changes constantly.

Parents
  • 0

    Hello, Not K.

     

    If you are trying to detect a negative voltage relative to ground potential of the 'Duino; put a reversed InfraRed LED from the input signal to ground with a current limitting resistor and then set up a IR detector on one of the 'Duino's digital (2nd) inputs.   You will also need a blocking diode on the first input pin to keep it from 'seeing' the negative voltage.

     

    Happy Trails

     

    -=SyntaxMatters=-

     

    = End Of Line =

Reply
  • 0

    Hello, Not K.

     

    If you are trying to detect a negative voltage relative to ground potential of the 'Duino; put a reversed InfraRed LED from the input signal to ground with a current limitting resistor and then set up a IR detector on one of the 'Duino's digital (2nd) inputs.   You will also need a blocking diode on the first input pin to keep it from 'seeing' the negative voltage.

     

    Happy Trails

     

    -=SyntaxMatters=-

     

    = End Of Line =

Children
No Data