Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	2.0V - 5.5V DC
Interface Type	Capacitive Touch (4 Channels)
Response Time	Approx. 60ms at VDD=3V, CL=10pF
Output Mode	Direct Output / Toggle Output (Selectable)
Sensitivity Adjustment	Via External Capacitor (1pF - 50pF)
PCB Dimensions	28mm x 17mm x 1.6mm
Mounting Hole Size	3.0mm diameter
Operating Temperature	-40°C to +85°C
Quiescent Current	Typically 3.0µA at VDD=3V
Package Includes	1x TTP224 Module, 1x Pin Header Strip

6 reviews

Anonymous

Mar 30, 2026

Rating: 4/5

Solid performance

Integration with ESP32 was straightforward. The only reason for 4 stars is that the soldering pads are a bit small for beginners, but otherwise, it's a great sensor.

Anonymous

Mar 18, 2026

Rating: 4/5

Good value, minor calibration needed

Works well for the price. I had to add a small capacitor to one channel to stabilize it against false triggers, but once calibrated, it has been reliable for my home automation setup.

Anonymous

Mar 17, 2026

Rating: 5/5

Compact and efficient

The low power consumption is a huge plus for my battery-powered project. The board is small enough to fit into tight enclosures without issues.

Anonymous

Mar 17, 2026

Rating: 5/5

Reliable for student kits

Bought ten of these for our workshop. All units functioned correctly. The direct output mode is very responsive, making it ideal for teaching basic input concepts.

Anonymous

Mar 15, 2026

Rating: 5/5

Perfect for DIY Projects

This module works flawlessly with my Arduino Uno. The sensitivity is great right out of the box, and I was able to detect touches through a thin plastic case. Very easy to wire up.

Anonymous

Mar 13, 2026

Rating: 5/5

Exceeded expectations

I was worried about interference from nearby components, but the shielding on this board seems adequate. It registers touches accurately every time.

5 FAQ

Q: Is a library required to use this with Raspberry Pi?

A: No external library is strictly necessary. Since the module outputs a simple digital HIGH/LOW signal, you can read the state using standard GPIO functions in Python or C++.

Q: What is the maximum current this output pin can source?

A: The output pins are designed for logic level signaling. They can typically source/sink around 4mA to 8mA, which is sufficient for driving an LED directly or feeding into a microcontroller input, but not for high-power loads.

Q: How do I switch between toggle and direct output modes?

A: The module usually comes with soldering pads labeled AHBL or similar. By bridging specific pads with solder as per the datasheet diagram, you can select between direct (momentary) and toggle (latching) modes.

Q: Can this module detect touch through glass or acrylic?

A: Yes, the TTP224 can detect capacitive changes through non-conductive materials like glass or acrylic, provided the material is not too thick (typically under 5mm works best).

Q: Does this come with headers pre-soldered?

A: No, the module typically ships with a separate pin header strip to allow flexibility in mounting orientation. You will need to solder them on yourself.

Explore your interests

STC32G12K128 STC8H8K64U Microcontroller Small System Core Board Development Board Emulator

$16.50

Youxin Electronics_STM32H743IIT6 Core Board System Board Learning Board STM32 Development Board

$118.00

Arduino DUE Development Board 32-bit ARM Controller A000062 Italian Official Original Import with Cable

$299.00

Ultrasonic Sensor HC-SR04 Ultrasonic Distance Measuring Module Bracket US015-025-026-100

$3.16

Serial SHT20 Chip Temperature and Humidity Sensor Test, SHT30 Chip Measurement and Monitoring Module by Viter Intelligence

$11.00

High-Speed Yabo Smart Raspberry Pi 4B Motherboard Development Board Accessories RaspberryPi 2G/4G/8G RAM Py

$494.30

Magnetic Circular Counting Chips, Two-Sided Flip Coins for Elementary Math, Kindergarten Early Education, Ten-Frame Matrix, Addition/Subtraction within 10 & 20, Teaching Tools

$11.90

3-Wire/4-Wire Flame Sensor Module, Fire Source Detection with IR Receiver, Flame Detection and Alarm

$1.08

SANSI White Label Class A Glass Graduated Cylinder C18 Micro-Precision Demulsification Cylinder with Scale Measurement Includes Certificate Ground Joint Stopper Hexagonal Bottom Borosilicate Glass Lab Equipment

$3.68

EV2400 Battery Unlock Fuel Gauge Programmer MSP430 HPA500 Evaluation Module Interface Board SMBus

$323.00

Cube Three-View Teaching Aid with Grid - 3D Geometry Observation Tool for Grades 4-5 Math (2cm Cubic Blocks Set)

$15.10

OrangePi Orange Pi Zero3 Zero 3 Development Board Allwinner H618 Orange Pi

$228.00

Digital 38KHz Infrared Receiver Transmitter Head Sensor Module Electronic Building Blocks Robot Infrared Communication Remote Control

$2.29

12V Stable Version Light-Control Switch No-Light Sensing with Extension Cable Photoresistor Plus Relay Module

$49.20

STM32 Smart Car 51 Microcontroller Arduino Obstacle Avoidance Chassis Kit Mecanum Wheel Robot Car

$40.80

Tech Small Production Small Invention DIY Piano Electronic Keyboard Real Playable Science Small Handmade DIY Materials

$33.00

HX711 Pressure Sensor Module Electronic Scale Bracket Weighing DIY Scale Pan Tray Set 5/10/40kg200

$3.28

Transparent 3D Geometric Model Perspective Decomposition Graphic Teaching Aid, Complete Set for Elementary Grades 1-6 Math

$6.80

Thin Film Pressure Sensor Display, USB Rechargeable Flexible Resistive Pressure Digital Display Module, Wide Range Wireless

$20.00

E18-D80NK Infrared Photoelectric Switch Diffuse Reflection Obstacle Avoidance Sensor Module 3-80CM

$12.60

LAN8720 Module Network Module Ethernet Transceiver RMII Interface Development Board Xinwei Electronics

$7.85

STC15W408AS Core Board Minimum System Board 51 Microcontroller Development Board TTSOP20 Learning Board

$18.47

New Version MEGA2560 R3 Development Board, Improved MEGA2560 R3 with Sensor Expansion Board

$13.68

Gradient Visual Illusion Kit: Electric Rotating Assembly Toy for Maker DIY, Paintable Handmade Model

$8.72

51/AVR Microcontroller Core Development Board STC89C52RC/51MCU Experiment Board/ATMEGA32 Learning Board

$37.90

[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set

$15.00

GY-30 302 Digital Light Intensity Illuminance Sensor BH1750FVI Module Light Sensor Ball

$7.41

Foldable Clothes Drying Rack Floor Standing Home Balcony Bedroom Hanging Clothes Quilt Drying Artifact Outdoor Cooling Rod Indoor Drying Rack

$47.10

Metal Detector Module Non-Contact Metal Induction Sensor Detection Module Metal Detector

$8.70

RV1103 Miniature Linux Development Board: RISC-V Vision and AI with Ethernet Port

$53.10

For Arduino Development Board R3 Mainboard Microcontroller Module Kit Programming Learning Board Sensor Suite

$78.00

Xuefen Geometry Stamping and Tracing Set for Grades 1-2, 3D and 2D Ink Pads, Math Learning Tools, Cube and Cuboid Models

$4.51

Rubber Tire Toy 4WD Smart Car Wheels Car Model Robot Accessories (Suitable for 2mm Axle)

$0.50

E18-D80NK Infrared Obstacle Avoidance Sensor Proximity Switch Smart Robot Car 10-80cm

$6.30

Digital 38KHz Infrared Receiver/Transmitter Head Sensor Module for Electronic Building Blocks Robots, Infrared Communication Remote Control

$2.80

51 MCU Minimum System STC89C52 DIP40 Through-Hole Smart Car Main Control Board Learning Experiment

$19.80

Outdoor Adventure Kids' Insect Observation Box with Magnifying Glass, Boys & Girls Toy for Exploration, Butterfly Catching and Fish Scooping Tools

$7.80

MPU-9255 9-Axis Attitude 3-Axis Electronic Compass Accelerometer Gyroscope Magnetic Field Sensor Module

$13.42

Freeze-Dried Chicken Treats for Dogs: Nutritious Weight-Gain Breast Meat Chunks for Puppies – Teeth Cleaning, Grain Mixing, Universal Use

$3.90

Soil Moisture Sensor Probe Soil Moisture Meter Detection Module Sensor Separate Probe

$2.39