Cosmetic prototype
The first phase of the project is creating a cosmetic prototype as a proof-of-concept and to allow Proxima to better communicate their ideas to stakeholder, potential customers, and investors. The cosmetic prototype has no internal hardware. It consists of a printed ACM(aluminium composite material) panel and a collection of buttons, toggle switches, and dials.
Test Panel
After the cosmetic prototype is completed, work began on the electronic hardware and programming of the project. To create a simple, accessible project, most components are selected from Adafruit, which is known for their collection of easy-to-use hardware and beginner-friendly turotials. The main controller is chosen to be an Adafruit Feather RP2040 for its low cost, ease of use, and built-in battery compatibility and I2C connector. CircuitPython is the chosen programming language, also for its incredible accessibility to beginners.
All components are mounted to a test panel made from a thin sheet of plywood. After connecting the various components, a gameplay loop is developed to create an engaging experience for the user. This is done by utilizing a variety of controls including buttons, switches, and dials. Immediate and salient feedback is provided to the user through lights and sounds.
Mounting brackets
To ensure an immersive experience, a significant design choice is to have the electronics hardware mount to 3D printed brackets instead of mounting them directly onto the front panel. The brackets are attached to the front panel via adhesive. This way, the front panels can maintain a clean appearance with no visible fasteners on the surface. The 3D printed brackets have threaded inserts in desired locations to allow secure mounting of hardware. This also allows repeated removal and reinstallation of circuit boards without wearing out the threads, which would have been an issue if the screws thread directly into printed plastic.