How to make a simple hopper clock in Minecraft

Nextgenintelligen on Instagram: "Ivan Miranda’s clock is a master class in marble mechanism design. There are a surprising number of marble-based machines out there. Marbles work well in machines because they roll easily, have substantial weight, and are very consistent in diameter. Ivan Miranda was able to take advantage of those characteristics to build this amazing marble clock. This project uses hundreds of marbles to display the time in numeric digits. To do so, the machine needs to roll sp