I'm currently trying to build a device to measure the impulses sent from my electricity meter. I've built the sketches and it works fine, it can detect a flash of light, but on my meter, it doesn't detect anything. After reading the manual of the meter I'm starting to think it's an IR light source rather than just a red led as they describe.
Is there something that I can do to my photoresists to make it detect IR flashes? or is there another device like a photoresistor I can use in place of it?
Hope someone can help