The mechanism of active ankle is a novel 3 DoF parallel mechanism that operates in an almost spherical manner. It is a project by DFKI Germany and currently it is being used in medical rehabilitation. The project was re-engineered with techniques like CAD and Rapid-Prototyping to reduce the cost of fabrication. In the present paper, a comprehensive study of the design, and fabrication of the active ankle is provided. Various motions of human ankle joint such as adduction-abduction, inversion-eversion, and plantarflexion-dorsiilexion, was achieved by the prototype. This project was modeled in CAD software like SolidWorks, accordingly mounting were prepared for the available motors. Various parts of Active Ankle prototype was printed using Olivetti 3D printer by feeding the .gcode file created by slicing software Cura. The paper also discuss about the integration of Dynamixel motors with MATLAB for control. Finally, the paper talks about various application of parallel manipulator in the area of medical rehabilitation.

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A solar PY-powered eggs incubator was conceived, manufactured, and tested in this investigation to see how well it worked. The incubation unit, automated temperature device, and solar PY system are the main components of this design. Throughout the incubation period, the incubating chamber was maintained at a temperature of 36.8C to 37.9C, with an optimum relative humidity of 67.3 percent. The percentages of fertilization and hatching of eggs were 44 percent and 23 percent, respectively, according to the findings. This low hatchability rate might be due to several variables, including cloudy weather on day three of the incubation period, inadequate egg storage before loading in the incubator, time and energy lost flipping the eggs, or the fact that the majority of the eggs were defective from the start. The components of the incubator were estimated using engineering formulae involving heat and mass balances