ENGINEERING ARCHIVE
Projects, engineering notes and architectural decisions. From the lab to real systems.
Bluetooth Channel Sounding brings more reliable distance measurement than RSSI to Bluetooth LE, enabling secure access, asset tracking, IoT devices, wearables and industrial embedded systems.
5G RedCap brings 5G to IoT devices that do not need full eMBB modems: gateways, industrial sensors, cameras, wearables and asset trackers. Here is how to evaluate it for embedded, firmware and connected products.
Post-quantum cryptography is no longer theory: NIST, the EU, OpenSSL and ST are pushing ML-KEM and ML-DSA into embedded and IoT. Here is what changes for TLS, secure boot, OTA and product lifecycle, with concrete trade-offs for MCUs, Linux gateways and compliance.
eBPF makes the Linux kernel observable and programmable in a controlled way. On embedded systems, it can help diagnose issues, monitor traffic, strengthen security and reduce debugging time on deployed devices.
ESP-IDF 6.0 changes Picolibc, PSA Crypto, legacy drivers, build workflows and OTA. Here is how to assess risk before upgrading ESP32 firmware in production.
What the U.S. Cyber Trust Mark means for IoT and embedded product teams: firmware updates, secure boot, vulnerability handling and documentation.
A practical view of QUIC for embedded Linux, gateways and IoT devices: latency, TLS integration, multiplexing, complexity and real use cases.
A practical architecture guide for OTA firmware updates with rollback, A/B partitions, image validation and production-safe embedded device lifecycle management.
How to reduce embedded Linux boot time by measuring and optimizing bootloader, kernel, drivers, filesystem and init system.
What bootloaders really do in embedded products and how architecture changes across MCUs, embedded Linux and FPGA-based systems.
Why OpenWrt can be more than router firmware: networking, security, automation and reproducible Linux builds for gateways and edge devices.
How hardware roots of trust help embedded products protect keys, boot chains, firmware integrity and sensitive operations.
THE NEXT STEP
