For a monitoring project, I need to read the data from a pair of old Caterpillar Electric Power Generators. This data includes readings from old gauges (like shows in the attached pictures) that measure charge in amperes, battery charge, oil pressure, fuel level. Other data that I need capture comes from some pilot lights that alert if there is conditions light low lube oil pressure, excessive water temperature, overspeed, overcrank, etc. And finally, I need get the position from the rotary switch:
There is another energy generator that display the information in LCD displays like the attached picture:
I know how to deal with arduino sensors, but not with this old instruments. There is a way to “translate” this data in information that Arduino can read?