Bluetooth LE/Thread smart LED bulb enables lighting control from connected device or voice command

Xiamen, China-based Internet of Things (IoT) technology company, LEEDARSON, has selected Nordic Semiconductor’s nRF52840 Bluetooth Low Energy (Bluetooth LE) advanced multiprotocol System-on-Chip (SoC) to provide the core processing power and wireless connectivity for its ‘A19 Tunable White Bulb’.

The smart LED bulb is designed to replace a conventional bulb, enabling users to wirelessly control indoor lighting in a smart home or commercial building using any compatible connected device, or using voice control via a smart home ecosystem such as Amazon’s Alexa, Apple’s Siri, or Google’s Assistant. A19 Tunable White Bulb comes in a 108 by 60mm form factor, is dimmable from 100 to 3 percent, tunable from warm white (2700K) to cool white (6500K), features static and dynamic scenes for different light experiences (for example, wake-up/sunset), and provides a lifespan of approximately 25,000 hours.

Secure Bluetooth LE commissioning

Using the Bluetooth LE connectivity provided by the Nordic SoC, a screwed-in A19 Tunable White Bulb can be securely commissioned from a Bluetooth 4.0 (and later) smartphone via a third party iOS or Android app. Once connected to the network, the smart LED bulb can be wirelessly controlled using Nordic SoC-enabled Thread – a wireless protocol designed for low-power, low-bandwidth network applications including mains-powered devices such as smart light bulbs.