This article describes the construction of a low-cost, mobile, CNC (Computerized Numerical Command) mini machine, bringing as its objective the gain of experience in relation to machining knowledge, where the device executes a list of movements written in the programming language G. For the development of the project, the Arduino Nano embedded system, two CD / DVD players and two H bridges (L293D) were used. Afterward, the assembly, programming and results of the project in question are described.

This article describes a retro gaming central developed using Linux embedded system based on Raspberry Pi platform. The retro gaming center uses Internet of Things (IoT) principles to enabling monitor users' data. Thus, using minimum hardware and the free Linux operating system, the administrator can continuously optimize the project in low cost. The proposed system can be easily configured by beginners in electronics and computing, and also be applied as a didactic tool.