The Easter holiday is a joyful time when we engage in numerous celebrations and special activities. The most notable and fun has to be dyeing eggs and decorating them in different, often very detailed and ornamented, patterns.

As you may know, at RoboCAMP, we like to improve on common tasks by designing robots to do the work for us. Inspired by the upcoming Easter holidays, we decided to decorate our eggs in a more modern, automatic way. Thus, we came up with the idea for the EV3 Robotic Egg Decorator.

Take a look at the video which shows a glimpse of what this robot can achieve.




Build one yourself!

All you need is a LEGO Mindstorms EV3 (31313) set, a felt-tip pen (at least one color, but the more the better!) and a couple of hard-boiled eggs. The building instructions for the EV3 Robotic Egg Decorator are right below.

The Egg Decorator uses all three EV3 motors. The large motor is responsible for precise lengthwise positioning of the pen on the egg, and the second one rotates the egg. The medium motor is used to raise and lower the pen so we can control where the robot draws lines on the egg. The main challenge was to build a robot that will hold eggs of different sizes. Our robot has an ingenious holder, which uses a LEGO tire to give a better grip on one side with a clever, adjustable holder at the other end.

The programs we’ve provided give you the chance to decorate your eggs using three different patterns. You can combine them to make your egg designs unique! Click here to download an EV3 project with three sample programs.

Have a fun and happy Easter holiday!