Smart Bulb

Overview

The smart bulb is a screw-in lamp with a wireless radio and a microcontroller built into the base, so colour, brightness, and white temperature can be set from an app or a voice assistant. Beyond the AC-DC driver of an ordinary LED bulb, it adds a Wi-Fi/BLE system-on-chip and per-channel drivers that mix red, green, blue, and tunable white. It pairs over Bluetooth and then joins the home Wi-Fi for remote control and scheduling.

Construction

Mains enters through the Edison Base (E27), an E27 cap whose screw shell and tip eyelet form the neutral and live contacts, separated by a vitrite insulator. Power and intelligence converge on the Driver & Control Board, which combines an isolated AC-DC driver module, a Wi-Fi/BLE SoC Module handling networking and app pairing through a 2.4 GHz antenna, a control MCU, and four constant-current driver ICs that regulate the RGBW channels.

Light comes from the LED Board (MCPCB), an aluminium MCPCB carrying RGB packages for full-colour mixing alongside tunable white packages for warm-to-cool output, all reflow-soldered for low thermal resistance. The board sheds heat into the Heat Sink Body body through a Thermal Interface Pad, and the Diffuser Dome dome scatters and blends the coloured emitters into an even, glare-free output so no individual die shows through.