A custom ESP32 embedded solution with modular firmware, security features and Wi-Fi/BLE connectivity for connected products.
This DEV.to version is a short engineering note extracted from the case study, with the complete English page linked at the end.
Stack at a glance
ESP32, ESP-IDF, C, FreeRTOS, Wi-Fi, Bluetooth Low Energy, NVS, Secure Boot.
Why this matters
- Many ESP32 prototypes work in the lab but become fragile when they need provisioning, updates, configuration storage and diagnostics.
- A product-oriented firmware base makes the device easier to maintain across hardware variants and field updates.
Architecture notes
- Split boot, application logic, configuration and communication concerns instead of building one monolithic firmware loop.
- Use ESP-IDF components deliberately: NVS for persistent configuration, FreeRTOS tasks for concurrency and clear interfaces for Wi-Fi/BLE behavior.
- Design provisioning, fallback and update strategy before the device reaches production testing.
Practical takeaways
- Wi-Fi reconnects, partial configuration and failed updates are normal runtime states. They should be observable and recoverable.
- The best embedded architecture is boring in production: predictable memory use, clear ownership and minimal hidden state.
Read the full case study
The English page on the Silicon LogiX website contains the full context, visuals and project details: Custom ESP32 embedded solution for IoT devices.
I keep the DEV.to version intentionally shorter so the canonical page remains the source for the complete case study.
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