for an upcoming project I will need to translate 12V digital output signals from a series of industrial retro-reflectice IR sensors (like this one) in order to be read from an Arduino board.
What kind of "converter board" can I use?
I have read that several strategies can be considered:
- using relays (but I don't consider it the preferred route);
- using transistors like the 2N2222 and a few electrical components on the side;
- using optocouplers (which seems to me to be the preferable way).
- are there any disadvantages that I should evaluate?
- Are there breakout boards in your catalog that already mount one or more optocouplers for the purpose?
- Are there other strategies that I haven't considered?