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Evanson Kariuki

Fullstack Software Engineer · HFCB Personal Banking

Co-Founder, Brivemarc Technologies

Nyeri, Kenya

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Smart Lighting System

IoTFeatured

Smart Lighting System

IoT Developer 2025

ESP32 smart lighting prototype wired to two bulbs on a desk

Code Live

An IoT system that detects room occupancy with PIR sensors connected to an ESP32. Lights switch through relay modules, and the system publishes its state over MQTT for remote monitoring on a web dashboard. It cuts energy wasted lighting empty rooms.

Technologies

ESP32
MQTT
PIR
Relays
C++

Gallery

Bulb switched on by the occupancy sensor

ESP32, relay module and PIR sensor wiring for the smart lighting system

Smart lighting prototype with bulbs switched off when the room is empty