CAP1203 Capacitive-Touch

Overview

This guide provides a step-by-step explanation to help you integrate the Gsense-Touch Sensor for touch detection using the G-Sense module on the GLYPH-H2 board. The system detects left ,middle and right gestures and provides real-time feedback via the Serial Monitor.

Features

• 3-Channel Capacitive Touch – detects left, middle, and right touch/slide gestures
• Swipe Detection – recognizes directional swipes across the slider
• Digital Output – provides clear HIGH/LOW signals for each touch channel over I2C
• Low Power Consumption – suitable for battery-operated applications
• Integrated Signal Processing – built-in debounce and touch sensing algorithms
• Compact Module – easy integration with boards like GLYPH

Applications

• Gesture-Control Interfaces – control devices or menus with simple swipes
• Consumer Electronics – touch sliders for volume, brightness, or selection
• Robotics & Automation – simple human-machine interface (HMI) for commands
• IoT Devices – intuitive touch-based input for compact devices
• Gaming & VR Controllers – gesture input for interactive experiences
• Wearable Devices – lightweight, low-power input sensor for compact systems

Step 1: Hardware Required

1. Glyph Board
2. Gsense Capacitive Touch Slider

Step 2: Circuit Diagram

Step 3: Code Setup

#include <Wire.h>
#include "SparkFun_CAP1203.h" // Click here to get the library: http://librarymanager/All#SparkFun_CAP1203

CAP1203 sensor; // Initialize sensor

void setup()
{
 Wire.begin();       // Join I2C bus
 Serial.begin(9600); // Start serial for output

 // Setup sensor
 if (sensor.begin() == false)
 {
   Serial.println("Not connected. Please check connections and read the hookup guide.");
   while (1)
     ;
 }
 else
 {
   Serial.println("Connected!");
 }
}

void loop()
{
 if (sensor.isLeftTouched() == true)
 {
   Serial.println("Left");
 }

 if (sensor.isMiddleTouched() == true)
 {
   Serial.println("Middle");
 }

 if (sensor.isRightTouched() == true)
 {
   Serial.println("Right");
 }
}

Step 4: Upload the Code

1. Connect the Board

• Connect your GLYPH board to your computer

2. Select the Board and Port

   Do the following settings in your Arduino IDE, Do the following settings in your Arduino IDE,

   • Tools > Board > esp32 > Pcbcupid GLYPH C3

warning

For the Pcbcupid GLYPH C3 to appear under Tools > Board > esp32, the esp32 board version installed in the Arduino IDE should be greater than or equal to 3.1.0.

• Tools > Port and select the port connected to your GLYPH.
• Tools > USB CDC on Boot > Enabled

warning

If USB CDC on BOOT not enabled, you won't be seeing any serial data on Arduino IDE.

3. Upload the Code

• Click the upload button (➡️ icon) or use the shortcut CTRL + U in Arduino IDE to upload the code to the board.

Step 5: Observe the Output

When you touch different sides of the Sensor, you can see the Serial Monitor Output as follows: