Copper & Code is a compact embedded studio building firmware, PCBs, and low-power wireless for connected and medical-grade devices — from the first schematic to a design that manufactures.
Four disciplines under one roof — so the schematic, the layout, and the firmware are built by people who talk to each other.
Bare-metal and RTOS firmware on nRF52, ESP32, and STM32 — drivers, BLE/Wi-Fi stacks, low-power state machines, and OTA that survives a bad connection.
Schematic capture and multi-layer layout — power trees, mixed-signal, and RF, with HDI and via-in-pad for fine-pitch and WLCSP parts.
BLE, Wi-Fi, and cellular connectivity with current budgets measured in microamps. Antenna matching, coexistence, and battery life you can defend to a client.
Optical and biopotential front ends — PPG, ECG, SpO₂, NIR — with the documentation and verification your regulatory path actually needs.
Device classes we've taken from concept to working hardware. Client names withheld under NDA — the engineering speaks for itself.
A 4G-connected wearable streaming clinical-grade ECG. We designed the power tree to survive a 2 A modem peak on a tight battery budget, and the firmware to keep the link alive in the field.
Continuous PPG, ECG, and motion in a ring form factor. Fine-pitch WLCSP layout with via-in-pad on an HDI stack-up, paired with a sensing front end for clean biosignals off the finger.
A 36-LED near-infrared therapy wearable with brutal thermal and power constraints. We used PWM duty-cycling and a boost topology to keep it effective and still comfortable to wear.
An ESP32-based device that sorts and dispenses medication on schedule, controlled over BLE. Motion control, sensing, and a phone app talking to firmware that doesn't miss a dose.
Silicon, tooling, and standards we work with day to day. If it's connected, low-power, or measures a body, it's probably in here.
A sequence, not a scramble. Every stage produces something you can review before we move to the next.
We map the product, its constraints, and the real risks before drawing a single trace — so nothing expensive surprises us in month three.
Hardware block diagram, MCU and power selection, and firmware structure — decided together, because they constrain each other.
Schematic, layout, and firmware developed in parallel so that bring-up is a formality, not a fire drill.
Boards populated, debugged, and characterised against real targets and real signals — with the data to prove it.
Manufacturable design files, documentation, and firmware — packaged so your team, or your CM, can take it and scale.
People and points of contact across four time zones — so your project keeps moving while you sleep, and there's someone in a nearby hour when you need to talk.
Send a brief — even a rough one. You'll hear back within two business days, from an engineer, not a sales bot.