ENGINEERING DOMAIN
Embedded & Devices
Firmware, microcontrollers, device I/O, audio hardware and OTA.
Firmware, microcontrollers, device I/O, audio hardware and OTA.
6 projects · 15 pieces of writing
ESP32 Command LLMA 580K-parameter transformer trained from scratch to turn English and Spanish commands into GPIO, PWM and servo actions entirely on an ESP32-S3.
Fimi Cam ESP-IDFESP32-S3 camera firmware with Wi-Fi bring-up, browser live view, MJPEG streaming and still-image capture for an OV2640-class camera board.
Grander CSI ESP32-S3 FirmwareESP32-S3 CSI telemetry firmware that streams channel-state data over UDP and supports persistent configuration plus signed A/B OTA through the fleet service.
LOUP ESP32-S3 Connected Voice DeviceCustom ESP32-S3 voice device spanning codec bring-up, I2S audio, AEC, jitter/playout, SIP/RTP, e-paper UI, controls, provisioning and OTA.
OTA Fleet Control PlaneESP device fleet service with unique device credentials, immutable firmware artifacts, compatibility gates, rollout state and authenticated operator control.
Pocket DialA SIP registrar and PBX that runs on an ESP32-S3, with extension calling, peer-to-peer RTP, call features, web administration, optional LVGL UI and dual-OTA.
A Kubernetes Service Can Be Healthy While the App Is BrokenSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
Chart.yaml Is Small, but It Gives a Service an IdentitySystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
Conditional Helm Templates Are Powerful—and Easy to OvercomplicateSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
Container Ports Are Documentation and a Runtime ContractSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
How a Missing Helm Value Turned Into a Nil-Pointer ProblemSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
Internal Services vs External Services in VoicewareSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
Labels and Selectors: The Tiny Contract That Can Break an Entire ServiceSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
Matter-over-Thread on ESP32: The Hard Part Starts After the Demo Board WorksA Matter demo proves the SDK and radio can talk. A product has to survive commissioning, Thread topology, memory limits, power loss, manufacturing, OTA, and multiple ecosystems.
Rendering Safely When Some Voiceware Workers Are OptionalSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
Secure ESP32 OTA Is a Chain of Trust, Not an HTTPS DownloadHTTPS protects a firmware transfer in transit. A production OTA design also has to prove image authenticity, select boot slots safely, confirm health, permit recovery, and prevent rollback to revoked vulnerable firmware.
The Missing celery.type Bug and What It Says About Configuration ContractsSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
The Missing service.port Bug in celery-lowSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
When to Reuse a Helm Template and When to Fork ItSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
Why I Later Exposed Voiceware on NodePort 30080Systems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.
Why the First Voiceware Web Service Used ClusterIPSystems engineering across embedded firmware, real-time communications, Linux infrastructure, networking and observability.