Hi there !
On my current project, I would like two different arduinos to read the state of some hall sensors. My plan was to simultaneously connect a hall sensor to a pin of each arduino. However it seems that it ruins the results. Now, when one sensor is HIGH, all the other sensors turn HIGH as well. It seems that the second arduino actually connects all the sensors between them (even if it is unpowered and basically completely unplugged besides the hall pins). Aren't the pins isolated from one another ? How can I wire a sensor to two arduinos ?
Thank you in advance for your help.