In my thesis, I write about the construction of a mechanism that, with the help of a single motor, enables sequential rotation of elements, whereby the entire mechanism is designed to resemble a flower. The key components of the product are gears, which enable simultaneous opening of the flower (rotation of components in the shape of flower petals), while rotated partial gears enable sequential rotation of individual groups of petals. In my concluding part, I also describe the process of designing and manufacturing the mechanism, as well as possible improvements.
The entire mechanism is controlled depending on the measurements of the commercial EEG measuring device, more precisely depending on the degree of calmness of the user. The more calm the user is, the more the mechanical flower blooms. Due to the unavailability of Bluetooth modules recommended by the manufacturer, the synchronization of communication between the EEG measuring device and the microcontroller is an obstacle, the solution of which I describe in the software part of my final thesis, where I describe, among other things, the control of the stepper motor with the help of a driver.
For a simpler user experience, I created a physical user interface on which the user can choose between three options. These are: opening and closing the mechanism independently, recording measurements on a computer and opening the flower depending on the measured degree of calmness. The last two options can be run simultaneously. The user interface also has built-in safety functions that allow safe intervention in the operating area of the device to interrupt operation or change the mode of operation by means of a confirmation key, sensor for the presence of an interface magnet and time delay.
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