I think the SiPM is in backwards too.
If you think you put it in backwards, try the other way. It won't work in the incorrect orientation. In an Instructable, you get what you pay for. This one is an example.
I think the SiPM is in backwards too.
If you think you put it in backwards, try the other way. It won't work in the incorrect orientation. In an Instructable, you get what you pay for. This one is an example.