The touchless button reference design can detect the approach of fingers and hands without physical contact using Renesas’ capacitive touch solution. The electrode detects the proximity of the finger via self-capacitance and turns on the LED. The demo solution is compatible with all types of Renesas capacitive touch CPU boards.

Learn more about Renesas' Touchless Button Solution

Touchless Button Electrode Boards

Features

  • Based on Renesas' high sensitivity, noise-tolerant capacitive touch solution
  • Detect the approach of a finger up to 15mm above the electrode
  • Sensing can be carried out with any non-conducting material like glass or paper
  • Support for IEC 61000 4-3 Level 3 Class B*
  • Applicable to various applications such as white goods and public facility
  • Realize system control and touchless operation for your product using a high-performance, low power 32-bit microcontroller (MCU) and touch IP
  • Possible to use touchless control combined with other capacitive applications (water level measurement + touchless button)

*Class B: No false detection when there is no object nearby in a noisy environment.

Renesas Touchless Button Reference Design Advantage

The Renesas Touchless Button Reference Design solves the problems of conventional technologies (infrared sensor, ultrasonic, etc.)

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Renesas Touchless Button Reference Design solves the problems of conventional technologies (infrared sensor, Ultrasonic, etc.)

Why Use the Touchless Button Reference Design

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Suggested Touchless button reference design

Hardware Information

Reference Design Application Notes Gerber Data
Touchless button demo solution RA2L1 Group Touchless Button Demo Solution (Hardware) (PDF | English, 日本語) -

Software Configuration

Firmware Contents Code Size
RA2L1 Group Touchless Button Demo Solution Sample Software (ZIP | English, 日本語) Sample Project ROM: 14616 bytes   RAM: 2664 bytes

Documentation & Downloads

Title language Type Format File Size Date
Application Notes & White Papers
RA2L1 Group Touchless Button Demo Solution (Hardware) 日本語 Application Note PDF 328 KB
Downloads
RA2L1 Group Touchless Button Demo Solution Sample Software 日本語 Sample Code ZIP 352 KB