In the context of university education, students should start their engineering careers with computational thinking and problem-solving skills. This article proposes the design of a hardware prototype with block programming to develop computational thinking skills in recently admitted engineering students. The prototype consists of two components: hardware and software. The hardware component consists of 6 electronic sensors and 5 output devices. The software component is based on a block programming environment; this programming environment is essential for students starting the engineering career; even more so for students who come from rural areas, with limitations in the use of ICT. © 2022 Copyright for this paper by its authors. Use permitted under Creative Commons License Attribution 4.0 International (CC BY 4.0).