The specific eTwinning project was implemented in classroom conditions as part of the High School Informatics curriculum in collaboration with schools from the countries of Turkey and Portugal. The students of the 1st grade of Junior High School came into contact with the Arduino microcontroller for the first time in order to cultivate and develop computational thinking skills while simultaneously using the educational platform Tinkercad. Students started by designing and programming simple circuits using LEDs and resistors and then built more complex circuits using potentiometers, buttons and sensors with the main purpose of solving everyday problems. In groups of two or three students they implemented the circuit using an Arduino Mega robotics kit. The result of each implementation was presented to the plenary session and to the other partners via video. The final product of the project was the creation of a smart home where each partner school created an automation for a part of the home.