Thanks in advance!
I'm trying to connect the Arduino to a system that includes A calculator that reads signals and a sensor. I want to connect the arduino between the sensor and the calculator so I can get information from it(from the sensor as well). Regardless of the communication it has with the current system.
once the sensor detects something, its resistance changes.( I hope I've been able to explain properly).
I want to connect my Arduino to this working system without the Arduino Will damage the resistance of the circuit.
Thanks very much for the helpers! And if someone did something similar I would be happy for link or anything else.