Hi!
Im working on a project. One Arduino with 5 normal switches and 3 Leds. My problem is the distance between the switches.
i have to deal with approx. ~200m. Some first experiments with an nrf-module were quite good but i want to try cable also.
Is it possible to use a cable in these length?!
What is '5 normal switches'.
200m?
Use opto isolators at the Arduino location.
Five micro switches.
yes, the longest distance is ~200 meters.
At 200m this will eventually clobber your Arduino.
Use opto isolators/couplers, they will do the job.