Trying to get an input to work from a Teknic Servo motor. I am already completely using JP5 and JP7 with the 5V tolerant inputs. I am stuck running it into JP4 or JP6 which say they are only good for 3.3V.
Would I be okay with just adding a series resistor or something? Here is the diagram from the servo motor. Hope there is an easy solution.
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Group: DynoMotion
Message: 14900
From: TK A2
Date: 7/1/2017
Subject: Re: Help With 5V Input [1 Attachment]
I Googled and found a manual with an Appendix D with specifications for HLFB. It will only drive a max of 9ma so it can't pull up the IO on JP4 or JP6 with 150ohm pull down resistors.
The HLFB should basically operate like a switch so it should also switch 3.3V. So you might select one of the two IO with no pull down resistors and add a 1K pull up resistors to 3.3V. Then connect the HLFB to switch the pin to GND
Trying to get an input to work from a Teknic Servo motor. I am already completely using JP5 and JP7 with the 5V tolerant inputs. I am stuck running it into JP4 or JP6 which say they are only good for 3.3V.
Would I be okay with just adding a series resistor or something? Here is the diagram from the servo motor. Hope there is an easy solution.
