Designing Smart, Ultra-Low-Power IoT Systems.
Hi, I'm Christos Skoufis. I build microcontroller-based IoT hardware, sensor networks, and custom embedded electronics to automate the physical world.
Featured Engineering Projects
Flagship hardware and embedded developments
BLE Tracker & Companion App
Privacy-oriented Bluetooth tracker paired with a native Android application. The design focuses on aggressive low-duty-cycle advertising, deep-sleep power optimization, and end-to-end encrypted communication with the companion app. The Android client stores pairing keys securely and exposes an on-device timeline, battery status, and location-only lookup features without relying on third-party cloud services.
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Remote Socket
WiFi smart socket with integrated power measuring and mains switching isolation. The board integrates a mains metering IC and isolated sensing front-end, mains-rated relay switching with snubber protection, and optocoupler isolation for control logic. Telemetry is published over MQTT for Home Assistant integration, and the firmware supports safety interlocks, overcurrent detection, and scheduled automation.
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ULP Plant Moisture Sensor
Sub-GHz ultra-low-power plant environmental monitoring node (v0 through v2.2). Over the revisions the platform moved from Wi‑Fi to an 868MHz sub-GHz radio to cut peak power consumption by orders of magnitude; the final production board integrates a USB-C charging path, battery protection circuitry, and optimized power rails targeting multi-year battery life while reporting temperature, ambient light, and capacitive soil moisture readings.
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