ESP32-S3 Smart Device with LCD & Relay Control
Custom firmware for Waveshare LCD integration, BLE relay control, and ESP32-S3 PCB layout. Production-ready with OTA updates and deep sleep.
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Real-Time Analytics Dashboard
React + PostgreSQL SaaS dashboard serving 10k+ users. Secure REST APIs with JWT auth, role-based access, and Azure AD integration for a Fintech client.
Complex PCB Layout for IoT Applications
Multi-layer PCB design incorporating ESP32-WROOM-32, power management, RS-485 transceiver, and USB-C charging. Gerber files ready for production.
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Machine learning model for non-invasive blood group detection using fingerprint image analysis with Django backend and REST API for clinical integration.
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Environmental Multi-Sensor IoT Network
Wireless sensor nodes for temperature, humidity, pressure, CO2, and motion. BLE gateway aggregation with cloud storage and configurable alert thresholds.
Case study
ESP32-S3 Smart Device — Full Stack IoT System
Client required a complete embedded system integrating a Waveshare LCD display, BLE relay control, and multiple sensor inputs — all running on a custom ESP32-S3 PCB designed in KiCad.
We delivered full firmware (FreeRTOS task architecture, BLE GATT server, display driver, OTA) plus the PCB layout with DFM-reviewed Gerber files ready for factory production.
The client rated the collaboration 5.0 ★ — "the collaboration was a success. The initial phase progressed rapidly, and he contributed valuable new ideas."
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