I am designing a shield for an arduino project. I am going to have a long run , about 30 meters or so. So I have been doing some reading on RC filters and clipping diodes. I have read about this circuit below and believe this will create a ruggard digital input filter. This signal is only a switch so speed is not a problem. My question is… Is this a good location for my indicator LED? I’m not sure if it will interfere with the mechanics of the filter. I can’t see any reason why it would but I’m no expert.
I wanted to add about 9 of these inputs and include the filters. Also how can I calculate the Shottkey diodes size? Also i’ve read there will be a slight ‘bounce’ in the voltage as the filter works so it will get a backward voltage of about -0.6V is this a problem on an Arduino?
Thank you for any help.