[Brian] is using an Arduino to control multiple servo motors. This is nothing new and has been happening since the earliest days of Arduino. But rather than develop a project and share it, [Brian] … ...

In this “differentially-steered robot” design, the Arduino is configured to control two servos by making a second transcript of the Servo object. To start with you will need two micro servo motors.

This could be an interesting one if you work with robotics, flagged by the Arduino team - a look at how to smooth the operation of a servo, to avoid jerking between positions. It's from the YouTuber ...

As time marches on, and the clock ticks over the minutes, the servos control an arm holding a dry-erase marker, which writes out the four digits of the time to a 24-hour clock.