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Can the Digital IO Pin on terminal block handle 15V input?

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  • roj_blake42
    Hi Group, will I damage the digital IO pin (pin 8 on the OT3 terminal block) if I feed it with 15volts? I am using the digital IO pin to control profile
    Message 1 of 3 , Sep 16, 2013
      Hi Group, 

      will I damage the digital IO pin (pin 8 on the OT3 terminal block) if I feed it with 15volts?

      I am using the digital IO pin to control profile switching and want to switch the jumper setting ON/OFF using a 15V input. I just wanted to make sure that this would not damage the tracker?

      Thanks 

      Roj
    • Scott Miller
      You shouldn t push it past 5v. You might be able to get away with it if you put a sufficiently large resistor in series to limit the injection current, but
      Message 2 of 3 , Sep 16, 2013
        You shouldn't push it past 5v.  You might be able to get away with it if you put a sufficiently large resistor in series to limit the injection current, but 15v is still a lot.  You could use a pair of resistors as a voltage divider, or you could use the 15v signal to close a relay.

        Scott

        On 9/16/2013 3:26 PM, roj_blake42@... wrote:
         

        Hi Group, 


        will I damage the digital IO pin (pin 8 on the OT3 terminal block) if I feed it with 15volts?

        I am using the digital IO pin to control profile switching and want to switch the jumper setting ON/OFF using a 15V input. I just wanted to make sure that this would not damage the tracker?

        Thanks 

        Roj

      • roj_blake42
        Great, thanks Scott --- In tracker2@yahoogroups.com, wrote: You shouldn t push it past 5v. You might be able to get away with it if you put a
        Message 3 of 3 , Sep 16, 2013

          Great, thanks Scott 



          --- In tracker2@yahoogroups.com, <scott@...> wrote:

          You shouldn't push it past 5v.  You might be able to get away with it if you put a sufficiently large resistor in series to limit the injection current, but 15v is still a lot.  You could use a pair of resistors as a voltage divider, or you could use the 15v signal to close a relay.

          Scott

          On 9/16/2013 3:26 PM, roj_blake42@... wrote:
           

          Hi Group, 


          will I damage the digital IO pin (pin 8 on the OT3 terminal block) if I feed it with 15volts?

          I am using the digital IO pin to control profile switching and want to switch the jumper setting ON/OFF using a 15V input. I just wanted to make sure that this would not damage the tracker?

          Thanks 

          Roj

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