The Capacitive Sense Dimmable Light Switch Reference Design adds color and temperature control capability that is not achievable with a traditional light switch. The design includes a capacitive sensing technology to detect different gestures such as touch, hold, and swipe. The light switch can be seamlessly integrated into a larger ZigBee® home automation setup. The switch is a low-cost design with the EM3587 integrated System-on-Chip (SoC) with an ARM® Cortex™-M3 MCU and a 802.15.4 radio, which is Thread upgradable. The switch also includes a capacitive sensing EFM8 Sleepy Bee 8-bit MCU that senses 6 capacitive touch points to detect user taps (on/off), holds (brightness or color control) and lateral swipes (mode selection). The low power hardware and software of this reference design allow for up to 3 years of operation on a single CR2032 coin-cell battery.
Included with the kit is Silicon Labs’ software with example applications, documentation and other resources to get started with your own development. Reference design software features basic, power configuration, identity, on/off, level control, OTA upgrade and diagnostic clusters.
Light Switch Reference Design Training Center
Get started with the capacative sense dimmable light switch
Learn how to setup and use the reference designs
Learn how to balance the tradeoffs of battery and size in IoT applications
Dimmable Light Switch Software Files
Schematics, BOM, gerber files and EFM8SB1 capacitive sensing binary file
Sample application code available through Ember Desktop Sample App