Ultra-Low Power Wearable ECG/PPG Monitor Firmware
Challenge
A healthcare startup required an ultra-low power wearable ECG/PPG monitoring device that meets
FDA Class II compliance, delivers medical-grade accuracy, and supports
BLE connectivity with secure cloud integration — all while maintaining
<2mA average power consumption.
Solution
- Bare-metal firmware optimized for extreme low power using event-driven architecture and intelligent sleep states
- Secure BLE 5.x stack with HIPAA-compliant encryption
- Crash-safe data logging with robust OTA (Over-the-Air) update infrastructure
- IEC 62304 compliant software development lifecycle with complete documentation
- Cloud gateway integration with hardware-backed secure key management
Outcome
- Battery Life: 14 days on a single charge (vs. 2-day competitor baseline)
- Time-to-Market: 16 weeks from firmware kickoff to FDA submission
- Deployment: 50,000+ devices in the field with zero critical firmware recalls
- Cost Reduction: 30% lower firmware engineering cost compared to offshore teams
