I'm looking for a book with these topics, I know it exists, but I don't remember many details:
A science fiction book series with the following characteristics:

1. More than one book: The story is part of a series with at least two books.

2. Powerful machine: The plot involves a very powerful machine, which was divided into parts to prevent it from falling into the hands of the villain.

3. Protagonist's grandfather: The machine was created by the protagonist's grandfather or something like that, and he is an important figure in the plot.

4. Villain: The villain gets the parts of the machine at some point in the story.

5. Protagonist loses: The protagonist faces difficulties and loses at some point in the story.

6. I think the machine had the property of stopping someone in time or turning them into stone (something like that).