We used dental floss to draw lines from the clock face diagonals, and drilled the holes where those lines met.
You need not place the clock's arrow hole in the center. As this is a design choice, you can be creative and place it wherever you wish. You can even customise the shape of the clock face as well, so it is not a plain square like ours.
This Tutorial is used in the following courses and lessons
Discover the fun of DIY electronics with your child in this self-paced, beginner-friendly online course, where parents and kids work together to build a rotating LED strip display!
Designed for those with no prior experience, this project-based course walks you through the entire process of assembling a spinning LED display that uses persistence of vision to create a glowing clock.
In this lesson, you’ll attach the PCB to the clock face and customize it however you like. Remember, you’ll need your drilling skills!