Capacitive Sense Dimmable Light Switch Reference Design


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.

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Hardware and Software Features

Reference Design Kit Contents:

  • Dimmer Switch
  • Quick Start Card

Reference Design Kit Features:

  • 6 capacitive touch pads (controlled by     EFM8SB1)
  • Gesture control for touch, hold, and swipe
  • Low-power design support up to 3 year battery life on CR2032
  • FCC/CE compliant
  • zigbee HA 1.2 pre-certified

Software Features:

  • zigbee HA 1.2 pre-certified
  • Firmware pre-programmed
  • Over-the-air (OTA) firmware update capability
  • Interoperable with other gateways
  • Thread upgradable

Embedded World 2017 Video

Connected Home Mesh Networking Demo

Reference Design Training Center

Capacitive Sense Dimmable Light Switch User Guide

Get started with the capacative sense dimmable light switch

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Capacitive Sense Dimmable Light Switch Training Video

Learn how to setup and use the reference designs

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White Paper: Battery Size Matters

Learn how to balance the tradeoffs of battery and size in IoT applications

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Software Files

Dimmable Light Switch Hardware Design Files

Schematics, BOM, gerber files and EFM8SB1 capacitive sensing binary file

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