MOMelvin Opoku

Product design

Bone Density Measurement System

A product-design case study: custom PCB layout, embedded firmware bring-up, team communication, and mechanical integration.

PCB layout for bone density measurement system

Product Design Lens

This project was not just a board design exercise. It asked how sensing hardware, firmware, packaging, and communication fit together in a biomedical measurement product. I worked across schematic design, PCB layout, soldering, firmware bring-up, and validation.

Build Scope

The system used an AD5941 analog front end and STM32G0 microcontroller. I wrote Embedded C for SPI, I2C, OLED output, GPIO, reset behavior, and interrupt testing, then debugged power, communication, and mixed-signal behavior during bring-up.

Team and Communication

The poster and team photos show the other side of product design: explaining the design clearly, making tradeoffs visible, and helping people understand how the electrical system fits inside a larger product concept.

CAD Credit

The ZProbe exploded CAD assembly animation and design were created by Jack Gardner.

Product design team presentation Product design team
CAD model animation and design by Jack Gardner.