Mechanical Development & Testing

A project log for Measuring-Node-for-Equilibrium-Evaluation

Developed a stand-alone node for equilibrium evaluation, integrating sensors and software to enhance therapy for children.

ivan-hernandezIvan Hernandez 06/12/2024 at 21:350 Comments

Phase 1: Initial Prototype with Off-the-Shelf Plastic Box

The initial mechanical prototype of the IMU balance node was housed in an off-the-shelf plastic box, readily available from various suppliers. This approach allowed us to quickly assemble the components and focus on the functionality of the electronics and firmware. The primary goal during this phase was to validate the core functionalities of the system without investing significant time and resources into custom enclosures. The plastic box provided basic protection and easy access to the internal components for debugging and adjustments.

Phase 2: Custom Case Design for Enhanced Usability

Having validated the system's core functionalities, we moved on to designing a custom case tailored to our specific needs. Using CAD software, we modeled a case that offered better protection, accessibility, and aesthetics. This custom design addressed several limitations of the off-the-shelf box:

This custom case was 3D printed using  PLA, allowing us to rapidly iterate on the design and make necessary adjustments based on initial testing feedback.

Phase 3: Integration of Silicone LED Diffuser

To enhance the user interface, we integrated a silicone diffuser for the LEDs. The diffuser served multiple purposes:

The design was optimized to ensure that the silicone diffuser could be easily installed and replaced if necessary, without compromising the overall integrity of the case.

Phase 4: Extension Design for Push Buttons

Another key improvement in our custom case design was the addition of extensions for the push buttons. These extensions allowed the buttons to be accessible from outside the case, enhancing the usability of the device. The extensions were designed with the following considerations: