Application Note

R01AN6126EJ0100 Rev.1.00 Page 1 of 6

Nov.4.21

RA2L1 Group

CTSU Application Example: 3D Gesture Electrode Board (Hardware)

Introduction

The RA2L1 Group is equipped with hardware (Capacitive Touch Sensing Unit2; CTSU2) that senses contact

of the human body by measuring the capacitance generated between the touch electrode and the human

body (hand, etc.).

This application note explains the hardware specifications of the 3D Gesture Electrode Board

(RTK0EG0023B01002BJ) which is a sample application of the CTSU2 mutual capacitance method.

This electrode board uses CPU board of capacitive touch evaluation system.

Target Device

RA2L1 Group

Related Documents

1. RA Family Using QE and FSP to Develop Capacitive Touch Applications (R01AN4934EJ)

2. RA2L1 Group Capacitive Touch Evaluation System User's Manual (R12UZ0084EJ)

3. RX130 Group CTSU Application Example: 3D Gesture Demo Set Small version (Hardware)

(R01AN4320EJ)

4. RX231 Group CTSU Application Example: 3D Gesture Demo Set (Hardware) (R01AN4219EJ)

Contents

1. Overview ................................................................................................................................. 2

2. External Appearance ............................................................................................................... 3

3. Hardware Specification ............................................................................................................ 4

4. Block Diagram ......................................................................................................................... 4

5. BOM (part list) ......................................................................................................................... 5

Revision History .............................................................................................................................. 6

RA2L1 Group 3D Gesture Electrode Board (Hardware)

R01AN6126EJ0100 Rev.1.00 Page 2 of 6

Nov.4.21

1. Overview

RTK0EG0023B01002BJ is a detecting 3D gesture electrode board that uses CPU board of capacitive touch

evaluation system. This demo kit has the following features:

・Simple parts configuration

・Compatible with CPU board of capacitive touch evaluation system

・Quick and easy setup and operation (compact and light, powered from CPU board)

・Detection distance from about 60mm* (3D Gesture Electrode Board size: 100mm×100mm×110mm)

*Note: This is the detection distance when the power supply voltage is 5V.

Figure 1-1 3D Gesture Electrode Board System