Smart Grow Light Controller & LED PCBs
Intelligent Wi-Fi lighting system designed to simulate natural sunlight during dark winters.
Project Overview
Dark winter months in northern climates often limit plant growth due to insufficient solar radiation. This project combines a custom lighting controller with bespoke LED PCBs engineered specifically for indoor plants.
By calculating solar position angles and polling an onboard ambient light sensor, the controller dynamic-dims the LED array to smoothly mirror natural sunrise, midday intensity, and sunset curves.
The LED PCBs are built with multi-channel emitters (warm and cool white mixtures) and are driven by low-Rds(on) MOSFETs with high-resolution PWM. The controller exposes scene scheduling, manual overrides via Wi‑Fi, and adaptive dimming to keep PAR (Photosynthetically Active Radiation) within target ranges while optimising power draw and thermal performance.
Back Layer PCB Design
Custom Multi-Spectrum LED Array PCB
