Capacitive Touch Sensor Switch Module

Single And 4 Channel Finger Print Touch Sensor Module

A capacitive touch sensor switch module is a type of electronic component used to detect touch or proximity. It typically consists of a capacitive touch sensor IC (Integrated Circuit), along with supporting components such as resistors, capacitors, and sometimes LEDs or other indicators. These modules are designed to detect changes in capacitance when a conductive object, like a finger, comes into proximity with the sensor.

Blue TTP223B (Single Channel)

• Operational Principle: The module utilizes the TTP223B touch-sensing IC. By default, it outputs a low signal, maintaining low power consumption. Upon detecting a touch on its designated area (marked by a fingerprint icon), it switches to a high output state for quick response. After 12 seconds of inactivity, it returns to a low power state automatically.

• Installation Flexibility: Designed to be mounted on non-metallic surfaces like plastic, glass, or acrylic. This feature allows for discrete placement of touch-sensitive controls, such as within walls or desktops, providing a hidden and aesthetically pleasing interface.

• Control Interface: It features three pins:

  • GND: Ground connection
  • VCC: Power supply (2 ~ 5.5V DC)
  • SIG: Digital signal output pin

• Indicator and Design: Includes a power indicator LED (green) to indicate operational status. The module also has four M2 screws positioning holes (2.2mm diameter), facilitating easy installation and inter-module combination for larger applications.

• Technical Specifications:

  • Low Power Consumption: Efficient power usage ideal for battery-operated devices.
  • Versatile Application: Can replace traditional mechanical push buttons with a capacitive touch interface.
  • Output Pin Characteristics:
    • Sink Current (@ VCC = 3V, VOL = 0.6V): 8 mA

Red TTP223 (Single Channel)

• Operational Principle: The module is based on the TTP223 touch detection IC. By default, it outputs a low signal, operating in low-power mode. When a finger touches the designated area (marked similarly to a fingerprint icon), the module switches to a high output state for rapid response. If there is no touch for 12 seconds, it automatically returns to low power mode.

• Installation Flexibility: Designed to be installed on surfaces made of non-metallic materials such as plastic or glass. This feature allows for discrete integration into walls or desktops, offering a hidden and sleek button interface. Even a thin layer of non-metallic material like paper can cover the module without affecting its functionality.

• Trigger Setting Modes: The module offers different trigger modes:

  • AB=00: No-lock, high TTL level output.
  • AB=01: Self-lock, high TTL level output.
  • AB=10: No-lock, low TTL level output.
  • AB=11: Self-lock, low TTL level output. These modes provide flexibility in how the output responds to touch events.

• Technical Specifications:

  • IC: TTP223 capacitive touch sensor IC.
  • Power Supply: Operates on 2.0V to 5.5V DC, making it suitable for a wide range of applications.
  • Indicator: Includes an onboard level status indicator to show the operational state.
  • Size: Compact PCB board size of 15mm x 12mm x 7.2mm.
  • Positioning Holes: Four M2 screws positioning holes (2.2mm diameter) simplify installation and allow for easy integration with other modules.

• Control Interface: Utilizes three pins:

  • GND: Ground connection.
  • VCC: Power supply input.
  • SIG: Digital signal output pin that indicates the touch state.

Blue TTP224 (4-Channel)

• Capacitive Touch Technology: Utilizes capacitive sensing technology with the TTP224 IC, designed for touchpad control. It features a 4-finger-sized touchpad for intuitive user interaction.

• Jumper Configuration: The board includes jumpers that allow configuration of keypress output modes:

  • Toggle or Timed mode
  • Active High or Active Low output These jumpers provide flexibility in how the module interacts with external devices.

• Response Time Adjustment: Separate jumpers are provided to adjust the response time of the pressed keys:

  • Fast mode (60ms)
  • Low power mode (160ms) This feature enables optimization of response times based on specific application requirements.

• Output Interface: The module has 6-pin headers on the output side, with 4 pins dedicated to connecting to digital I/O pins of microcontroller boards such as Arduino or ARM STM32. This facilitates easy integration into various digital systems.

• Status Indicators: Includes onboard SMD LEDs (4-level status indicators), one for each pressed key. These LEDs provide visual feedback of the current status of each touch-sensitive key.

• Compatibility: Compatible with Arduino boards and other microcontroller platforms, making it suitable for applications requiring Human-Machine Interface (HMI) and mechanical button replacements.

TTP229 16-Channel Digital keypad Module

• Integrated Circuit: Uses the TTP229 IC for capacitive touch sensing, simplifying integration into projects.
• 16 Touch Pads: Features 16 sensitive touch pads, suitable for replacing traditional keypads.
• Capacitive Touch: Detects finger proximity to simulate button presses without physical contact, suitable for low-force touch applications.
• User-Friendly: Easy-to-use module for capacitive touch sensing, with built-in regulator for stable operation.
• Versatile Applications: Ideal for electronics requiring intuitive touch controls, usable through non-conductive materials.