Can I make a UV-C sensor with Arduino or something else?
UV sensor in water purifier has failed, I'm thinking of ways to trick the PCB into thinking it is working and make the water purifier work. Company is saying it is an old model and they are not making spares for it. I don't think I can buy a new one any time soon.
But the problem I'm facing now is to tell if the UV-C light is working or not, UV sensors or UV LDRs are not sold where I live and I cannot buy them online.
But Arduino are sold here, small UV modules for it are also available, is there anything I can make to regularly check if the UV-C light in the water purifier is working or not? And it indeed is a UV-C light and not normal light?