It is kinda frustrating that rules disappear by themselves in the beginning. I had to make a screenshot and read them like that :)

The second level was too hard for me. Like I don't get how this rounding rule works, you need some examples in your rule book.

Also, it's too easy to accidentally cut wire, when you just measuring voltage.

But idea itself is fun, I like that this is kinda nerdy, you need to use voltmeter and stuff. It just needs more polish.