Embedded Systems

STM32/ESP32 IoT Device to Manufacturing

STM32 and ESP32-based IoT devices using GSM/LTE and LoRa communication, with production-focused PCB design, validation, and DFM.

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Technical Stack

System Architecture

Microcontroller firmware coordinates sensing, communication, and device state.
Communication layer supports GSM/LTE and LoRa network paths.
PCB design applies DFM and validation constraints.
Production workflow closes the loop between testing and design revisions.

Engineering Challenges

Balancing cost, manufacturability, and reliability.
Debugging field issues across hardware and communication layers.

Results / Outcomes

Achieved >99% hardware uptime target in deployed systems.
Improved production yield through manufacturability-focused design.

Engineering Notes

Problem

IoT hardware needed to move from prototype to reliable production while maintaining uptime and manufacturability.

Engineering Takeaway

Production embedded systems require validation loops, not only working prototypes. Manufacturability is an engineering requirement, not a late-stage cleanup task.

STM32/ESP32 IoT Device to Manufacturing

Technical Stack

System Architecture

Engineering Challenges

Results / Outcomes

Engineering Notes

Problem

Engineering Takeaway

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