Capacitive and Infrared Sensing
QuickSense™ Front Panel Demo Boards

Silicon Labs offers two Front Panel demo boards.

FrontPanel2EK
The FrontPanel2EK demonstrates capacitive button sensing, capacitive proximity sensing, infrared proximity sensing and LED control with the Silicon Labs C8051F800 MCU and Si1120 infrared proximity sensor.

FrontPanel1EB
The FrontPanel1EB demonstrates capacitive button sensing, capacitive proximity sensing and LED control through an acrylic overlay with the C8051F700 MCU.

C8051F800 and Si1120 QuickSense Front Panel Demo Board

The Silicon Labs FrontPanel2EK evaluation kit combines two powerful proximity sensing technologies: capacitive and infrared. The evaluation board includes a Silicon Labs C8051F800 touch sense MCU for capacitive button sensing, capacitive proximity sensing, LED control, and control of the Si1120 proximity and ambient light sensor IC.

Modeled after an FR-4 PCB front panel, the infrared sensing is implemented with a single infrared LED and adjacent Si1120 infrared proximity detector. Visible LEDs illuminate when the buttons are pressed and when a hand enters the proximity region of either the infrared or capacitive sensing circuits. For convenience, the board includes the Silicon Labs Base Adapter circuit for USB connectivity to the Silicon Labs QuickSense Development Studio for sensor performance monitoring and threshold adjustment.

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The FrontPanel2EK includes the following items:

• FrontPanel2-EB demonstration board
• USB cable
• FrontPanel2-EB Quick Start Guide

Additional FrontPanel2EK resources:

• FrontPanel2EK Download Package includes:
• Quick Start Guide
• User’s Guide
• Schematic
• Printed-circuit board files
• Firmware
• QuickSense Firmware API (AN366)
• Understanding Capacitive Sensing Signal to Noise Ratios (AN367)
• Effects of ESD Protection Devices on Capacitive Sensing Performance (AN376)
• Baselining in the Capacitive Sensing Firmware API (AN418)
• Designer's Guide for the Si1102 and Si1120 (AN442)
• Printed Circuit Design Notes for Capacitive Sensing with the CS0 Module (AN447)
• QuickSense Development Studio

C8051F700 Front Panel Demo Board

The Silicon Labs FrontPanel1EB Front Panel Demo board is a simple to use demonstration of the F700 MCU capacitive sensing circuit. The demonstration platform mimics the printed circuit board in a front panel and includes capacitive keypress and capacitive proximity sensing functions.

For convenience, the board includes the Silicon Labs Base Adapter circuit for PC connectivity to the Silicon Labs Human Interface Studio for capacitive sensor performance monitoring and threshold adjustment. The demonstration platform uses the new C8051F70x/71x high-pin count touch sense MCU device family.

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The FrontPanel1EB includes the following items:

• FrontPanel1-EB demonstration board
• USB cable
• FrontPanel1EB Quick Start Guide

Additional FrontPanel1EB resources:

• FrontPanel1EB Download Package includes:
• Quick Start Guide
• User’s Guide
• Schematic
• Printed-circuit board files
• Firmware
• QuickSense Firmware API (AN366)
• Understanding Capacitive Sensing Signal to Noise Ratios (AN367)
• Effects of ESD Protection Devices on Capacitive Sensing Performance (AN376)
• Baselining in the QuickSense Firmware API (AN418)
• Printed Circuit Design Notes for Capacitive Sensing with the CS0 Module (AN447)
• QuickSense Development Studio