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Small green PCB with gold touch pad and white Grove connector

Seeed Studio

Seeed Studio Grove Touch Sensor TTP223

SKU CH-BXAC-2MJHM

A capacitive touch module based on the TTP223 IC with selectable fast or low-power modes and adjustable sensitivity up to 50 pF

  • TypeSensors
  • Fast response up to 60 ms in fast mode
  • Low power mode response up to 220 ms
  • Adjustable sensitivity via external capacitance up to 50 pF
  • Grove unified socket for plug-and-play integration
  • Works through non-metallic surfaces for waterproof or hidden buttons

Touch-sensor module for makers

This Grove module uses the TTP223 touch detector IC to add a single capacitive touch key to a project. It connects through the standard Grove unified socket for plug-and-play wiring. The sensor works through non-metallic surfaces such as plastic or glass, allowing hidden or waterproof button designs. It suits hobbyists, students and engineers building custom interfaces.

Check voltage and pin mode before wiring

The board operates at low power across a wide DC voltage range, but you must verify that your controller matches the module’s logic level. The LPMB pin selects Fast mode when left open or tied high, and Low Power mode when tied to ground. Response time is about 60 ms in Fast mode and 220 ms in Low Power mode. External capacitance up to 50 pF adjusts sensitivity.

Good for hidden buttons and sealed enclosures

Makers who need a touch control that works behind a panel or in a moisture-prone housing will find this module convenient. It is not suited for applications requiring multiple touch zones, slider or wheel input, or proximity detection beyond a single key. Projects that demand a mechanical switch feel or high-current switching should use a different component.

Highlights

  • Fast response up to 60 ms in fast mode
  • Low power mode response up to 220 ms
  • Adjustable sensitivity via external capacitance up to 50 pF
  • Grove unified socket for plug-and-play integration
  • Works through non-metallic surfaces for waterproof or hidden buttons

Specifications

TypeSensors

Questions about this item

What comes in the box and what extra parts are needed?

The package contains the Grove Touch Sensor module with its unified socket; you only need a Grove-compatible cable and a host board such as an Arduino or Raspberry Pi to start.

Should I use Fast mode or Low Power mode for my project?

Choose Fast mode (LPMB pin open or tied to VDD) for a 60 ms response, or Low Power mode (LPMB tied to VSS) for a 220 ms response and lower current draw.

How does the 60 ms response time feel when the sensor is mounted behind a panel?

In Fast mode the sensor registers a touch within 60 ms even through a non-metallic cover, giving near-instant feedback for a hidden button or waterproof panel.

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